2005 gmc sierra heater not working. In rare cases, a dirty or pinched hose can be responsible for windscreen washer system malfunction on GMC Sierra 1500. THERMOSTAT REPLACE IF NOT SEE IF HOSES ARE CLOGGED SHOT OF AIR COULD HELP OR DISSCONNECT BATTERY CABLE 10-15 MIN CONNECT BACK TRY HEATER. Jul 30, 2022 · Blown fuse, a loose wire, or a problem with the motor itself. 0 %. In my case, it was two screws using a 5. The most common reasons a GMC Sierra 2500 HD heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. 2. 2015 GMC Denali 2500HD Duramax. The most common reasons a GMC Sierra 3500 HD heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. We’ll start with the easy-to-check common problems and work our way to the harder-to-deal-with rarer issues that could be Feb 8, 2022 · The most common causes for AC fan blower motor not working in GMC Sierra 2500 HD are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. When you put the heater on high, the relay is energized bypassing the entire resistor unit, sending full 12V to the motor. #1 · Oct 24, 2013. Set your desired temperature. The relay is about $15. If the inlet is hot and the outlet is cold you may still have some blockage inside the core. Dec 30, 2010 · 2 Answers. 0. Would it be a blower motor problem or could it be a relay problem. Scan the HVAC for codes. A technician will diagnose your 2008 GMC Sierra 1500 heater using the symptoms you report as a starting point. David. step 1 :access the resistor. 4. Once you have found it, remove the electrical connectors from the blower motor. Because your 2005 GMC Sierra 2500 HD heater is a complex mechanism that uses an electric fan to blow air through a heater core that is heated by the engine coolant, the problem could be electrical, mechanical, coolant-related, or a combination of these systems. In the process of replacing the T-stat we flushed the whole system but not the heater core directly. The seat system on these trucks is complex and is not covered in depth in the Hayes book or anywhere else on teh internets so here is the GM Nov 4, 2017 · With the engine warm, feel the lines in the engine compartment going to & from the heater core (or, if you are a wuss, use an Infrared Thermometer). If they are about the same temp and nice and warm, its gonna be an actuator or blend door problem, if one is hot and one is cool or cold, the heater core is restricted and needs Oct 25, 2021 · No heat on either side. step 2 :Installing the Air Temperature Door Actuator. Use your 7mm socket and driver. 2000 Chevy Silverado 1500 (300,000km, and second motor) 4. #TARIQLAB #ChevySilveradohvacfixing The most common reasons a GMC Sierra 2500 heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. Aug 24, 2015 · 2006 GMC Sierra, 2500 4wd. At first the heat would occasionally stay hot when you turned the temperature control down. 2) Then check the actual control panel. Nov 12, 2023 · 32 posts · Joined 2011. Dec 24, 2017 · 2004 Silverado WT with a V8 6. Low coolant level or air in the cooling Jun 23, 2011 · Remove the four 7mm bolts from beneath the glove box. Mar 2, 2018 · A. BS. Foggy Windows Apr 28, 2008 · NOT. Work the actuator with backing plate out. GM has a bulletin out to replace the control module/regulator with a new part. The engine and oil temps were around 125° max and it would not blow warm air out of the vents. Be patient as there is not much room to access these screws. Oct 26, 2015 · SOURCE: 93 gmc sierra heater not working. 7L 4x4, Last year of the Full Size 2dr Blazers - Keep it Professional Grade. 10s, K&N FIPK, Blackbear, Dumped Magnaflow, Goodmark Cowl - - 1994 K1500 Chevy Blazer Silverado TBI 5. If both stopped working at the same time, that is often a module issue and a new one requires programming. Driving down the road and it will come on full blast. Your guage should peg out. Low coolant or air in the cooling system. The subject vehicle is a 2005 Chevy Jun 23, 2015 · Step 1 – Recalibrate the HVAC. Aug 16, 2012 · How to fix the A/C Heater on your Chevy GMC that goes out intermittently. Most of the time it is stuck on the lowest option, regardless of what I set it to on the climate control (In any mode). If you aren’t getting heat at all, check out this GMC Sierra No Heat article before replacing the heater core. So far I’m guessing since I don’t have heat on either side, I can rule out the blend door actuator. Reinstall the Connector. 1 out of 5 stars 87 Oct 15, 2012 · Heater Blowing Cool air. I am showing all ready except "O2 Sensor Heater" (which is what the same as they told me at the emissions test). The last few weeks I've been having an issue in which my blowers are very temperamental. when the switch. tRY disconnecting the batteries for about 10 minutes and then hook back up and see if the servos correct it. Go into a store, come out a minute later, start truck, no heat. There are two tabs that hold this triangle shaped panel in and a third tab to pull up on. Make sure the key is off. 3 K5L - 2012 GMC Sierra SLT 6. This applies to everything built on the full-size GMT800 truck platform -- Silverado, Sierra, Suburban, Yukon, Escalade, Tahoe. 28 posts · Joined 2011. Heater on 2005 Sierra does not work. 2015 GMC Sierra 2500HD Duramax. #6 · Feb 25, 2011. Yes, you are correct, there is a separate fuse in your Sierra. Mar 9, 2013 · I have a 2006 Sierra SLT Crew Cab, My trouble began with intermittent seat heater issues, sometimes it would work, then shut off after a few minutes, now nothing (Driver's Door Controls) Then yesterday the Power Seats/Lumbar (Driver's only) stopped working, Passenger side is functional. Price: $28. Mar 19, 2014 · Wiring problem of the 2005 GMC Sierra 1500 6 Failure Date: 07/18/2009 . I hear a flap noise like it switched over but I get nothing out the defrost. 3. Reverse steps 1-3 to reconnect the seat connector. However, the other one should still work if it supported heat before. Reasons a GMC Sierra 2500 HD Heater Isn't Working. Remove the trim. 5 to 2 ohms. They are low coolant, air pockets, a bad heater core, an airlocked cooling system, and a malfunctioning thermostat. 2005 GMC Sierra My heated seats worked fine yesterday, got in the truck today and BOOM no heated seats, the seats move just fine but there is no light on at all on either side when I hit the seat heater button!!!! Any thoughts, I looked for fuses but couldn't find one listed and I have no owners manual. some vehicles use a mechanical valve to turn the coolant flow on and off to the heater core). I brought it to the dealer and they said it was the heated seat module and it needed to be reprogrammed. No heat whatsoever is coming out! Nov 10, 2010 · tmartin000. Jan 9, 2020 · So I noticed my temperature gauge was sitting in in the resting position, not moving, on my 2005 Silverado 5. Might be one minute later or ½ hour later, heat Feb 12, 2016 · The second time it was fairly cold out. If not it may be bad temp acc. My 2018 GMC Sierra has almost 50K mles. A quick fix for a vehicle air conditioner not working. When they start getting old they will draw too many amps and burn the resister up. Sep 20, 2022 · The resistor in the gmc sierra is located under the passenger dashboard. Hello Brian. Replaced resistor, still did not work. It is possible that someone put cabin air filters in -- pull the underdash cover from the passenger side-- under the heater- at the bottom see if you have a small cover-- about 2 inches wide and 5 inches long. IF it has filters, you will find two side by side. he is a GM tech. Jun 21, 2021 · 5. Sep 17, 2020 · Buy 89019089 HVAC Blower Motor Fan Resistor Compatible with 1999-2006 Chevy Silverado GMC Sierra 1500 2500 3500, 2000-2002 GMC Yukon (2 Holes Mounting Flange) Replaces# 973-004, 89018597, 22807122, RU371: Blower Motors - Amazon. Ever since I've had the truck even when on foot or defrost or mixed foot/defrost a little air would come out through the face vents. Chevrolet should send out a bulletin to owners on how to fix. 5) Slide the actuator onto the linkage shaft. The most common reasons a 2020 GMC Sierra 1500 heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. his heated seats stopped working and he changed the module in the door. 13240 posts · Joined 2011. All controls work perfect. Which is of course why you don't have high speed. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself. When I slide the dual controls up to deliver hot air I can hear the vents moving. Apr 14, 2013 · 1) Move the mounting plate from the old actuator to the new one. Drove it 5 hours averaging 75mph and it was still cold. Loose or damaged fan blade. I removed and tested the speed resistor, voltage to the blower motor and removed the blower motor. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue. pasenger side. The actuator had motored so far that the defrost gate was stuck. It is called the mode door actuator. Posted on Dec 31, 2010. Had 13 volts at plug in for blower motor ,plugged it in, still did not work, replaced blower motor, plugged it in, still did not work. Remove the four bolts under the glove compartment. There are like 10 different speeds since it is the digital auto climate unit. The heater temperature control is not working properly. COM, Your Duramax Diesel-Only Shopping Resource Sep 25, 2012 · 2004. The motor is constantly running and overheating. it will be held in with screws. About a month ago I posted a topic about my heated seats just coming on by it's self on my driver's side seat only. Thanks for any suggestions. 2 GAT. #4 · Nov 13, 2023. the coolant lines running to/from the heater both heat up when. Posted by dmalenius571 on Oct 11, 2009. The lower button that heats both the back and bottom doesnt light up any of the lights. just not sure what to do or where to start. #1 · Nov 19, 2022. Filter jam up or obstruction in the ducting. My problem is my heat won’t switch to defroster. Conditions: Outside temperature 14 degrees. Aug 23, 2009 · JC1843. 2005 GMC Serria 1500: Interior heating not working on any setting, defoster not working too. The most common component to fail on this vehicle and cause a concern like this is the blower control module/regulator. Doesn’t seem to be much rhyme or reason to it. Roy. After maybe 10 minutes of driving it was up to operating temp and for some reason I pushed the temp lever to max cold, then back to max hot and instantly I had good heat back. Feb 8, 2022 · The most common causes for AC fan blower motor not working in GMC Sierra 1500 are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. Well my logic was that the switch tells the module to come on not the other way around. The purple wire is smaller, maybe 14-16 gauge, while the red and black are 8-10 gauge going to the resistor. I have a heater problem with my truck. on start/crank sometimes the needle would move up as if it were working and then drop back down to its resting position. #8 · Jun 18, 2018. I replaced the blower motor resistor about 6 months ago when it failed, so all fan Oct 3, 2022 · If voltage goes to the blower motor, it’ll need replacing. Check for the voltage on the multimeter; it should be 12V. Remove the two 7/32 bolts from the door actuator. Now the temperature control is not working at all. A technician will diagnose your 2005 GMC Sierra 2500 HD heater using the symptoms you report as a starting point. 1:35. From what I understand, all trucks support the heated mirrors Feb 9, 2021 · I knew the guy who had it before me and he complained about it not warming up or blowing hot air in the winter. 3. Take care, Like. If I had both seats on it would turn both off. You should see the fluid gushing out of the hose. When you hear hoofbeats, look for horses not zebras. Disconnect the Connector for 5 Minutes. Dec 17, 2011 · I have a 2001 GMC Sierra. New Toy: 2008 Chevy Silverado LT 3500HD CC. the climate control module has been replaced. 1:12. The purple from the resistor to the fan motor is Feb 16, 2023 · 2) Unplug the harness and remove the mounting screws. Like. 1999-2006 Ch Mar 14, 2011 · If the resistor were bad, you wouldn't have any of the low speeds. Blocked hose. Dec 26, 2007 · First off, you have wires in the back of the glass similar to your rear-window defroster. Loaded interior, autometer gauges, ATS E-POWER, Ported fuel fitings Dec 26, 2017 · AlwayzShynin Discussion starter. (Maybe?) Thermostat is working as it should, coolant level is good and both heater hoses going in and out of the heater core are hot. Tighten the two 7/32 bolts to the actuator. If you have an automatic climate control system you should set to a reasonable living room temperature and let the auto system do the work to quickly heat or cool your vehicle. My heater has separate controls for driver and passenger. he must have tested the elements before doing so. esox07 said: Well, if you replaced it with a mirror that doesnt support the heat function, that might explain it. my a/c is freezing cold. If the relay isn't clicking, it isn't working. Posted on Jan 04, 2009 Feb 15, 2011 · O. 2006 GMC Sierra 1500 heater fan will not work on speed 1 and 2 but works on 3 and higher. I'd unplug the cord from the heater plug in the block and check the resistance right at the block heater. It controls air flow out the vents. I have a 99 GMC Sierra 1500. If they are nice and toasty warm/hot, then it probably is the blend door actuator. sorry for the late reply, my buddy drives an 06. It is in the underhood fuse panel marked "BLWR/ECAS" and is rated at 40 AMPS. 41kmi. The button that heats just the back works fine and all three levels can be seen. The AC works fine but the heater only blows cool air. My heat works just fine. Unplug the resistor from the harness. All your other speeds go through the resistor. Aug 4, 2011 · Pull that wire off, leave it unhooked & turn on the key. Jan 26, 2023 · Pry up the electrical connector from the carpet with a trim tool. #1 · Nov 8, 2011. It’s been in the teens the last couple weeks and it would not heat up. A1Auto or Rock Auto should have the parts and perhaps videos. The system is designed to adjust the fan speed, air flow distribution and delivered air temperature to quickly and efficiently reach and keep the interior of your vehicle at the temperature you set. If they are both about the same temperature I would say you have a problem with a blend door actuator. 2009 GMC Yukon XL SLT 5. step 2 :remove the resistor. Dec 28, 2010 · The experts at 1A Auto show you how to replace the blower motor resistor in your 99-06 Chevy Silverado or GMC Sierra. ACDelco 15-81638 GM Original Equipment Heating and Air Conditioning Blower Control Module. You will find many threads with similar issues and what the repair was. It has been problem free till now. You can get luke warm air on say the vent setting Jun 21, 2010 · It is stuck in the defrost position. Insert the actuator into place. Jan 10, 2016 · Ignition off, pull the HVAC/ECAS fuse for 10 seconds, reinstall and start vehicle without touching any controls, wait 40 seconds for the control module to self calibrate. 5 lly silverado 2500hd lt as stated above, the heater will blow warm, but never actually gets hot. at first i lost high and low settings on my heater switch, then the whole switch. I replaced the coolant temperature sending unit, and that did not fix the problem. Low coolant level or air in the cooling Oct 24, 2013 · 133 posts · Joined 2012. This may be the component here at fault and may The most common reasons a 2011 GMC Sierra 1500 heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. 4) Rotate the door linkage until it is in approximately the center of its travel. “Woe unto them that call evil good, and good evil; that put darkness for May 25, 2015 · 1) Check the resistor that connects to the blower. Jan 4, 2014 · You could be getting infinite resistance because the temp sensor hasn't turned on the heating element. 295/70R18 Cooper ST MAXX Stock height. Dec 30, 2022 · You need to put a bi-directional scan tool on it to read the BCM codes. May 3, 2019 · At the simplest level, there are two main reasons why the heater is not working. Dec 16, 2009 · An easy check to see if the heater core is plugged is grab both heater hoses under the hood where they go into the firewall after you drive the truck a few miles. Turning the knob to the right will tell the system to deliver warmer air. Remove the center console. We just replaced the thermostat and it still doesn't work right. 18259 posts · Joined 2008. Heater/Ac blower is not working. When you reconnected the battery and started it, it would have run Dec 26, 2012 · If one is cool and one is hot then you have an obstructed heater core (or a bad heater core valve, if it has one. #2 · Aug 23, 2009. I have a 2001 Silverado 1500 with the 4. No its not exactly like what you described. It's the blower motor relay, or less likely, the switch. Shouldn't be too difficult to figure out with a voltmeter. Jul 19, 2014 · Automatic climate control issue; 2005 Z71 ex cab. #7 · Sep 7, 2011. Driving: There has already been over 500 miles put on the truck since the exhaust work was done on it. Sep 28, 2016 · The subject vehicle is a 2005 Chevy Tahoe with a 5. Transmission temperature 101 or less. Try this first. i can adjust the digital hvac to 90 degrees but it isnt anywhere near as hot as my buddy's 2500hd silverado. Aug 28, 2021 · 2003-2006 GMC Yukon, Yukon XL 2003-2007 GMC Sierra Equipped with Manual HVAC (CJ3) or Heavy Duty Heater (C42) Due to part availability, owner letters will be released in phases starting with older model year first. the truck is running. The most common reason for your GMC Sierra’s AC not blowing cold enough is low refrigerant levels, followed by a dirty evaporator or condenser issues (bad or clogged). Electric raditor fan is working. May 31, 2018 · A-Premium HVAC Blower Motor Resistor - Replaces 89019088, 15305077 - Compatibe with Chevy, GMC & Cadillac Models - Silverado 1500/2500/3500, Tahoe, Sierra 1500/2500/3500, Yukon, Escalade & More 4. Owners for model year vehicles not included in first phase owner mailing will receive an owner advisory letter. Jul 11, 2020 · In this video I will show you how to fix HVAC Panel and how to replace the fuses. if the fuse is ok, more than likely the heater elements in the seat are bad. What usually happens when this regulator fails is the blower can continually run even after the key is shut off or the blower motor is inoperative. Yes PCM sends ground to the relays to activate. Turning the AC on/off and adjusting the temperature seems to work, but adjusting the May 3, 2019 · At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. My heat will only blow out front dash vents. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. my truck doesn't ever run above 180-190. (of course check the fuses first. If the heater has stopped working in your Yukon, this process has failed in one way or another. I thought the problem was with the controls so I bought a new one only to find out that was not the problem. What it does: Heater blows cold air in both passenger and driver side zones. The A/C button will light up. 2003 GMC Sierra SLT CC/SB. The truck looks and runs great, ran a car fax and car check and it was rated at Nov 7, 2016 · The part I bought is the blower control module that goes next to the blower motor. Readout: Motor temperature readout when driving for 2 hours is 185 degrees, in normal weather 210 degrees. May 21, 2010 · First thing I would check is to be sure you have coolant flow through the heater core. Mar 21, 2011 · Heated seat part 2 FIXED. floorboards aren't wet on the passenger side. If it does both of these correctly, then you need a new temp sensor. If they are still pretty cold, then the heater core is plugged. #3 · Dec 3, 2013. 3L 2wd standard cab, long box. If there is still a problem, the actuator for the temp blend door may have failed. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. 2:31. Now the selector (blend door maybe?) is not working at all and it seems to only be coming . Disconnect the wiring harness. While driving today blower motor Kicked out, I turned up the fan speed and it kicked back in. #1 · Dec 26, 2017. Apr 17, 2023 · If your GMC Sierra’s heat only works when driving, there are five leading causes you should check. I dug a little deeper and found that the mode (heat/defrost) had become uncogged. Mar 25, 2015 · The passenger seat belt has to be buckled for the heat to work. Reasons a GMC Sierra 3500 HD Heater Isn't Working. 2) Turn off the ignition switch and the HVAC control switch (if applicable). Took my climate controls out and the fan continued to work, ended up pulling the 40amp fuse in the engine bay to shut it off so Jan 5, 2020 · Depending on how old and complicated the vehicle is, the blend door may be operated by cable, or it could be operated by an actuator. Google your truck year and heated seat issues. Feb 23, 2011 · jc1843. Remove the screws from the center console duct. Faulty blower motor, a faulty blower motor resistor. got plenty of coolant. Jun 28, 2011 · After researching online, I downloaded the Torque app for my driod and purchased a bluetooth adapter. Yep, the rear defrost should activate the mirror heat. Some have had it fix itself from disconnecting the batterey and it reset itself. ) If the blower motor resister is bad, replace the motor as well. 18 posts · Joined 2018. Symptoms: When I use the heater it will fluctuate between delivering nice hot air and then without touching any controls will start blowing cooler air. 3) Plug in the actuator. Flucuating water temp indicator jumping from normal to 30 degrees higher then back down to normal. Check to see that you are getting power to the mirrors by pulling off the acces panel on the inside of the door on the front of the window. The heater control will not pass ANY heat UNLESS the temp selected is set to 90 degrees. My driver's seat element bottom was burned out. #2 · Nov 4, 2011. Jun 17, 2018 · silentbravo. #6 · Nov 22, 2011. Connect the multimeter with the resistors and turn on the ac fans. 3783 posts · Joined 2016. This would resolve if the blower was turned off and back on. Remove the floor air outlet duct extension (1) from the floor duct (2). There seems to be a lot of problems with those. dmalenius571 Nov 01, 2009. This is a very common problem that needs a very simple solution. com Video on diagnosing a 2005 gmc sierra 1500 with the 5. I changed the heater motor resister and that cured the problem. Turn the ignition off. It is sort of luke-warm all the time. 2 NHT - 2013 GMC Sierra SLT 6. Does not provide enough airflow. #9 · Nov 17, 2014. Any help will be appreciated! Dec 14, 2009 · - 2002 GMC Sierra Denali Quadrasteer 6. Once removed, your HVAC system will default to vents. 197 posts · Joined 2009. quit working. 5mm socket. 0L AWD, 4. Heater Blower Motor. 2 posts · Joined 2017. 8L engine. If you've noticed the control issues happening after disconnecting the battery or having repair work done, then the quickest fix is to recalibrate the HVAC. Sep 18, 2008 · had 2001 GMC 2500HD Ext cab stock except 285 85 16 hancook dynapro atm tires. I just bought a NNBS 07 Sierra SLT and it has leather interior with heated seats. Search it closer to the blower motor. k. Nov 4, 2011 · ASTE25. GMC Sierra 2500 HD. #1 · Mar 2, 2018. This is an older thread, you may not receive a response, and could be reviving an old thread. The connector that plugs into the blower motor under the glove box became too hot and melted the plastic resulting in the a/c and heat not to work (this includes the windshield defroster). 5 out of 5 stars 38 Reviews. Jan 5, 2014 · Subject: 10240A - Special Coverage Adjustment - Heating, Ventilation, and Air Conditioning Blower Not Fully Functional or Inoperative Models: 2003-2006 Chevrolet Avalanche, Suburban Tahoe 2003-2007 Chevrolet Silverado 2003-2006 GMC Yukon, Yukon XL 2003-2007 GMC Sierra Equipped with Manual HVAC (CJ3) or Heavy Duty Heater (C42) Oct 7, 2018 · The blower motor wasn't working on any speed. When I would turn it on it would turn off after about 10 seconds. Probably the resistor-- on the passenger side remove the large under dash cover-- under the glove box area you will see a black box with multi wires-- that is the resistor-- (common problem) replace the resistor-- some auto parts have it- (napa) also check the wires-- the resistor shorts Nov 12, 2014 · 174 posts · Joined 2014. is turned on you can hear a clicking noise from under the dash on the. 31 % of the time it's the. 200,000 hard miles and starting to need a lot of work. Completed on a GMC Sierra and Chevy Silveradoworks on most vehicles Turning that knob to the left will set the system to set cooler air. 235/80/17 Hankook dynapro ATM tires B&W turnover hitch Coming soon efi live, 4"duals, and gauges! DMAXSTORE. Jan 16, 2011 · 2005 GMC Z71 1500, W/ Dual digital climate controls. At which point the temp REALLY is set to 90! If you set for 65-89, then all you get is cold. Some of the lights for showing all the different places the heat can come out are either flashing or out completely. Make strange noises. AC System Not Blowing Cold Enough. There are 2 pins from PCM, and there should be a small 2 pin disconnect on the e-fan/headlight harness that comes out of the PCM and goes into the wiring harness about 8" away from the fans relay block. Restart the vehicle and see if the seat warmer is working. The door locks, mirror controls in both doors still work. Remove the four bolts securing the Aug 8, 2011 · 1689 posts · Joined 2009. 4130 posts · Joined 2007. 1. The most common reasons a 2006 GMC Sierra 1500 heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. The heater still blows hot. Oct 20, 2022 · The heater may stop working in GMC Sierra 3500 HD due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or HVAC control unit malfunction. Nov 8, 2011 · mikracer Discussion starter. If there’s no voltage, test the resistor (YouTube). Now with the key still on, momentairly ground that wire to the engine. It’s not unheard of for them to freeze up and not work until thawed back out. Could be the relay, the switch, or the wiring in between. Got to my destination, turned off the key and the blower kept running. Jordan. Check the blower motor and the blower motor resistor. OnlineAutoRepairVideos. So today, -6f, basically the same as second time except right after I got heat back I hit a fairly big bump on the highway and it Oct 23, 2022 · Heater problem with 2005 Silverado. allblackedout5 Discussion starter. you can check the elements with a ohmeter, disconnect the heater element connector and check the resistances across the element connector should be . com FREE DELIVERY possible on eligible purchases Jul 27, 2008 · could be your temp actuator. Because your 2008 GMC Sierra 1500 heater is a complex mechanism that uses an electric fan to blow air through a heater core that is heated by the engine coolant, the problem could be electrical, mechanical, coolant-related, or a combination of these systems. Asked by MOAppr Feb 24, 2010 at 07:16 PM about the 2005 GMC Sierra 1500 SLT 4WD Extended Cab SB. Dec 26, 2016 · Yes. Master 1,168 Answers. This can be done by warming up the engine and feeling the temperature of the inlet and outlet hoses. 98 Free Shipping for Prime Members. To diagnose, first open the hood and pull the end of the hose out of a windshield washer nozzle, and then turn on the washer system. 3 engine, that does not h Oct 20, 2022 · The heater may stop working in GMC Sierra 2500 HD due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or HVAC control unit malfunction. The high speed is energized on a separate circuit through a relay that is part of the For MORE great Auto Repair Videos, visit us at www. The red and black have 12v regardless of the speed it is set to. 0. NOTE: This doesn’t necessarily mean the air conditioning is on — it just means it Aug 23, 2019 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Dec 17, 2012 · Repairing heated seats and the "memory" power adjustment system 1999-2006. 3L engineHere is a v In this video we discuss common causes of low or no heat output from the HVAC system. The guage should stay to the left. Feb 22, 2017 · The heater works sometimes. I bought a 2005 Sierra SLT with 42k miles on it on Saturday 2/20/2010 from a used car dealer. I bought a new actuator, a Dorman, online and tryed it. GMC Sierra 3500 HD. Test the Seat Warmers. Question type: Maintenance & Repair. Unplugged, tested voltage with engine running got 13 volts. Find the three HVAC fuses; Two are under the hood and one is in the cab fuse box. Nov 18, 2022 · 11 posts · Joined 2018. Be careful, but it will come out with some maneuvering. Have it set to 90, either on auto or defrost, and it doesn’t come on after truck is plenty warm. If you change batteries, yours goes dead, or your doing some maintenance that requires unhooking the positive then your dual climate control will need fixing. Dec 3, 2013 · 7 posts · Joined 2013. Disconnect the connector for 5 minutes to reset the module. axnvavclwpdpwqnpmnvz
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