2007 tahoe no heat

 

If blows warm try step 3. the right side and rear heat is working fine. If it does not then you are low on coolant. -if the engine continues to run after you've disconnected the battery, your alt is fine. Rear heater works fine. Parts -Good Actuator - https://amzn. jimster2008 Discussion starter. When I'm drivin about 50mph I can feel air blowin through the vents only if the fan is OFF. Feb 27, 2020 · When your engine thinks it is hot. Oct 11, 2015 · 2004 chevy tahoe, front heater blows cold air. Dec 11, 2020 · NO HEAT! EASY CHEAP FIX! CHECK THIS 1ST!NO HEAT in your Chevy Silverado, Escalade, GMC Sierra Tahoe, Suburban, or Yukon? It could be this one SIMPLE fix!Chec Sep 13, 2014 · Complete how to repair no heat in the rear. Question 1. The fans are running on low speed. This is not functioning properly. I bought the Hayne's DIY repair manual - $27 - but after I tore off the plastic shrink wrap and read the section for Rear Heater/Air Conditioning - Automatic controls, I was real disappointed to read that these systems are beyond the scope of the of a DIY'er sort of Oct 10, 2011 · Messages. Only heat in front is when temp is at 90 degree setting. 1 Year Limited Warranty. Jul 2, 2012 · 0. No fliud on garage floor at all. 20 posts · Joined 2005. I just messed around with rear controls, and they appear to be working as they should. Location : Outlet Notes : 1. Bad temp sensor? Doing a repair or project?? Want to be part of a Friend's Edition Episode? Interested Subscribers should contact Rob at RM@Axlesgarage. The fix: Turn everything off and let the car sit overnight. Revving the motor some will increase the temperature some but not Chevrolet Tahoe Z71 4X4: hello, I have a 2007 chevy tahoe 4x4 when hello, I have a 2007 chevy tahoe 4x4 when Im slowing down to a stop and the engine goes from 8cyl to 4cyl no problem at very slow speed going from 4cyl to 8 cyl when stoping there can be heavy vibrati … Feb 27, 2020 · Every so often when I unplug the battery to my 07 Tahoe I just get super hot air coming out of the drivers side. 58 mi) Closed · Opens 7 AM Tue. Jun 20, 2017 · Hey guys, the rear heater won't blow hot in my 99 Tahoe. Rollin Thunder said: Guys, dont you know that after you start it and it runs for 10 min, You can restart it ONLY ONCE, then you MUST restart it with the key, or the remote start will not work again. Nope, it's not giving a second chance. When I disconnect the vacuum I get heat. I have a Chevy 2005 z71 Tahoe and not getting heat. 4,000 miles and the HVAC blows cold on the drivers side while hot on the passenger side. Since it is cold out for the past few mornings 30-40 degrees, I used the remote starter. #6 · Nov 22, 2011. I turn it on and the air will stop flowing. Equip cars, trucks & SUVs with 2007 Chevrolet Tahoe Heater Core from AutoZone. today outside temp was 15 degrees and within 1 mile from home temp guage read 200 degrees a … Apr 30, 2022 · 2007 Chevrolet Tahoe Review: Unreliable Year To Avoid For The Popular Large SUV. For some reason, the heat doesn't come out of the front ventsonly out of the defrost vent by the windshield and maybe the floor. Then refilled at the bottle and ran the vehicle to cycle it in. The truck started right up but the first day, no heat. Without the warm coolant going through it, there can be no heat. Warm it up drive 10-15 miles and it idles down when coming to a stop. So I made sure I left the blower knob on med and again tried Jun 13, 2020 · Re-calibrated the actuators by starting the truck, shut off the ac/heat system, turned off the truck, disconnected the battery, waited 10 minutes, grounded the positive cable to the negative, reconnected the positive terminal, started the truck, waited 5 minutes and turned on the ac/heat. They will still light up because the light doesn't draw that much power whereas the HVAC does so it won't kick in. Tried Techron a few times with little gas in the tank, checked for vacuum leaks with starting fluid, not finding it. One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. Is this normalto not have the heat Jan 4, 2011 · It did have the AC head unit controls replaced a year or so ago. The most common reason for your Chevy Tahoe’s AC not blowing cold enough is low refrigerant levels, followed by a dirty evaporator or condenser issues (bad or clogged). OD Quick Disconnect Hose End 3; (3) Branches; 100 PSI Maximum Working Pressure; J20 SAE Standards; Includes Clamps Material : Aluminum and rubber. 25 in. May 25, 2011 · Sounds like left temp actuator. If its a power seat, it's the cover with all the seat adjustment controls on it. Mechanic did a pressure test and saw no problem. Sep 15, 2010 · Problem Description. But when on hot and full blast the heat coming out of the vents is lukewarm. Take off the plastic cover near the door side of the seat. Went to back it into a parking spot and dies with a minor idle surge prior. See All Vehicles. 3) I checked voltage on the vent door actuator and I can see the range from 5v-1v which I do not see on the heat adjustor. Price: Alternate: No parts for vehicles in selected markets. Under your dash you have a motor that moves a door that will change the air flow from defrost,to vent ,to the floor mode. J. #12. The light on the button will come on to indicate that the feature is working. 87 GM GENUINE 1551267 @Rock auto Jan 24, 2022 · Ok folks here we go. 2888 Durham Rd, Roxboro, NC ( 40. Category: Chevy. The driver's seat is a different animal. When I changed it from feet to 1 Answer. Change Year. control works fine and blower blows air just not hot air. Picked up a 2000 tahoe a month ago and it seems the heat is not working. RESULT - still no heat. If this occurs, fault code (s) stored in the HVAC control module should be available to assist with diagnoses. Oil appears uncontaminated. 1 in. Check Availability. No matter where I set it (feet, defrost, upper vents) it doesn't really change. Indicator lights below the button show the level of heat selected: three for high, two for medium, and one for low. I have no heat unless I set it to 90 on the HVAC control unit. Sometimes moving it manually can,get,the heat on but not always. Mar 12, 2021 · Once the leak has been found, this must be closed again by replacing the respective component. So I checked my heater control valve under the hood, and the vacuum line wasn't connected to the solenoid from the heater control valve. I got down and looked at the blend door actuator and think it's malfunctioning. I found that they all tied into the same ground. Use CLR to May 3, 2019 · The heater core itself can go bad. 8 vortec with 78k. Recently changed thermostat because it was overshooting to about 230 degrees before it would open and cool down. Interior Uneven Air Temperature Through Heat Vents - 2004 Yukon XLT. I remember fixing this by unplugging a fuse for the HVAC and even unplugging the actuator for the drivers side to get it working, but it was by random chance it worked. Disconnect the heater-to-engine coolant hoses from the core tubes on the fire wall, in the engine compartment. Add some coolant if it is low and see if that does the trick. 39. The water pump was the last thing that my mechanic suggested, and he saw the problem before he changed it. Have replaced thermostat & command control switch on dash board. Sep 28, 2016 · The subject vehicle is a 2005 Chevy Tahoe with a 5. Air has ceased from blowing out of the defroster, floor and direct vents and I cannot hear the blower running either. Tahoe won't start. Theres a temp controll from 66-88degrees above the rearview mirror and a digital temp control, on the back of the center console, for the rear passengers to use that ranges from 60-90degrees. 3L V8 > Heat & Air Conditioning > Heater Hose Connector. Product Details. How much resistance should it have? So now what? The engine is still running at 160, and there is no heat. 2nd, below the dash on there is a Blend Door Actuator, Part# 52474810. 99. Part #: 28407. There is 0 power to this and therefore the rear AC/heat will not turn on. Sep 28, 2016 · In this video we visit The Heater Core Guys North Divsion for an overview of common causes of low heat output on Chevy and GMC trucks and SUV's. Engine off, put a wrench on the center of the AC compressor drive plate, and see if you can rotate the compressor clockwise. All of the actuators in these trucks turn about a quarter turn to move between their settings. Apr 14, 2022 · I have a 2009 Tahoe LTZ. i would def try to test the alternator. Dec 9, 2020 · Still no heat. 1A Auto has a large selection of aftermarket Seat Heaters for your 2007 Chevrolet Tahoe and ground shipping is always free! Visit us online or call 888-844-3393 and order a Seat Heater Kit for your 2007 Chevrolet Tahoe today! Gates ThermalPro Heater Hose - 28407. When on high heat, the cooling fan can be heard cycling every so often, and I can hear the relay at the front of the seat click when I turn the heat on. The hoses and the AC works fine. If one is hot and one is cold it suggests a blockage (which seems impossible since you just replaced the heater core). Nothing but cold air on driver's side. Temp changes as you move temp control up an down. Material: Plastic. Let's see if we can tackle this together. Does your heater blow hot air. Standard Jan 10, 2009 · 2004 Tahoe LT 5. Dec 11, 2018 · Hey, I just bought an 07 z71 tahoe and realized the rear entertainment controls and AC controls will not turn on at all. In my 2001 Chevy Tahoe my front heaters blow cold air when I need heat. Jan 24, 2011 · I have a 2000 Chevy Tahoe LT 5. Give this a go: - With car off, pull the 10A HVAC fuse (located in fuse box on driver side panel with door opened) Check fuse just because you have it out already, but should be ok. Started acting up a couple weeks ago. •. Soonest availability · Thu, Dec 21 at 4 pm. Shop at 1A Auto for Seat Heater Kits for your 2007 Chevrolet Tahoe at great prices. Jun 23, 2016 · I needed to figure out why my A/C was ice cold in the front but blowing warm in the second and third rows. the rear consist's of a control module, blower resistor, blower, up/down actuator, hot/cold actuator. My truck just blew out cold air before the fix. 1 person has answered this. I changed changed out the heater core and heater control valve but still no heat. Sounded like a screw or something had fallen into the blend door, only allowing it to rot Feb 28, 2010 · Yukon 2004 Rear Heater blows cold air only I have a Yukon 2004, just recently purchased rear heater blows only cold air. 05 in. When you replaced the battery it loses its memory as to where the door actuators were (the flaps that control the heat and A/C). J(Heated Seat and Seatback): Press this button to turn on the heated seat and seatback. I replaced the ambient temp sensor in the grill, the temp continued to show in the 90's, but then began reading right after about a half an hour of driving (in town and on highway). Nov 19, 2008 · Recently got a 2009 Tahoe LT model. About a month ago, my heater started blowing cooler air(no heat). After the car is warm, determine if both are hot or if both are cold. With fall co Dec 23, 2011 · Things to check 1st, Coolant Level. I had a service shop do a flush last winter when I got new tires which didn't help. Dec 11, 2020 · Suddenly no heat Noticed the hoses are hot up to the valve but cold on the other side. This can result in incorrect air delivery or temperature. The Chevrolet Tahoe heating system circulates hot coolant from the engine through the heater core. They said the evap temp sensor was stuck t 24deg and was telling the A/C system it was to cold. Feb 8, 2012 · Position a drain pan under the radiator, open the drain **** and drain the cooling system to a level below the heater core. Then you can feel little shakes or slight miss fires. Some people refer to it as the aspirator but on gm sites, its called a cabin Air Temperature Sensor. 54. Technicians may find that Diagnostic Trouble Codes (DTCs) B0434 and/or B3764 have been set. 3L V8 > Heat & Air Conditioning > Heater Hose. Satisfied Customers: 1,633. Canadafix, Canadian Class A. You see two little finger that are touching the two small circular arks. I'm having some issues with my heater. If you have a heater core that clogged, it’s not going to be able to pass coolant through. Unable to change rear HVAC system modes. Jan 18, 2010 · The fan for my front HVAC stopped working about a week ago and it's hasn't started working since. Dec 1, 2018 · 2000 - 2013 Chevrolet, GMC Temperature door actuator replacement. If they blow cool replace the module. Low coolant level. 18 mi) 1751 Heritage Center Dr, Wake Forest, NC ( 47. Apr 30, 2022. When looking at it while changing the mode, I can see it turn, but it doesn't hit every "stop. Jan 6, 2020 · My driver's side heated seat switch went on the fritz. The hoses, valve and heater core are all a few months old and worked well after install. My rear wiper would work but if I turned on the rear defroster the wipers would stop. SKU # 936133. I noticed that the vacuum was always on regardless of the temp setting. I figured one Dec 19, 2022 · This is an in-depth step-by-step guide to replacing the heater core in a GM Truck with the SLT / LTZ / Denali trim. 2. Apr 17, 2008 · An intermittent ticking/clicking noise from the rear Heating, Ventilation and Air Conditioning (HVAC) system. Jul 24, 2008 · 2000 - 2006 Tahoe / Yukon / Escalade Models. The subject vehicle is a 2005 Chevy Dec 27, 2013 · New Member. 04 Z71 chevy tahoe heat works great in front, no heat in rear of vehicle. The blower motor works on all 5 settings, and the air will go from hot to cold. Nov 10, 2017 · 2014 1500 Suburban w/ 71,000. Feb 7, 2014 · My new to me Tahoe acted just like this ,it was the evaporator temp sensor. DonaldPerry; Mar 26, 2024; Interior; Replies 4 Views 0. When I do reset the actuator rolls to side and then bottoms out on the heat side. Centerline Length (in): 600 Inch. I found a post here while searching about resetting the actuator. ID and 1. all blowers are working. At which point the temp REALLY is set to 90! If you set for 65-89, then all you get is cold. The hottest it will blow out the dash is as hot as the rear heat will blow, but I thought the rear Mar 20, 2012 · Following for similar issue in 2007 Suburban LTZ. Took it to dealer, they said coolant was low. Experience: Have owned/operated an automotive repair shop for the last 19 years working on all makes and models of vehicles. Since then it either doesn't work at all (usually) blows warm at best (sometimes) or works fine (rarely). I noticed the temp on the mirror was reading in the 90's when it was in the 30's and the mirror would restart at random several times per minute. The sensor had failed, making the gauge read "0". no loss. A bad heater core can also leak, so watch out for that. Picked it up, did not warm up on the 25 minute drive home, took it back to dealer they replaced the heater core. 2007 Chevrolet Tahoe PPV 8 Cyl 5. Check if this fits your 2007 Chevrolet Tahoe. Cabin air filter captures most of the dirt or other airborne particles, but some escape and fall on to the evaporator. medium, and low and to turn the heat to the seatback off. I connected my scanner and noticed that the coolant temp was around 223-229 degrees. I ran a temp gun on the hoses going in and out of the heater core through the Oct 27, 2015 · 2. Nov 13, 2007 Messages 110 There is no heater hose issues at all. You'll then get a better view of the underside of the cushion. There are 3 - the recirc door, the blend door, and the position (floor, vent, defrost). Oct 30, 2017 · No heat blowing out of foot heater vents. I drained the radiator at the lower plug and put the new thermostat on. ACDelco HVAC Door Actuator 15-72971. Jun 14, 2009 · Well, with the cold spell going aroundit's the first time we have had to use the heat in the Tahoe (just got in JUL). Year Warranty. Feb 2, 2021 · Hey everyone, trying to see if anyone else is having this problem that my sister’s truck appears to have. I had the same problem in my 2000 NBS Suburban. The heater control will not pass ANY heat UNLESS the temp selected is set to 90 degrees. Fitting Size (in): 1-1/16, 5/8, 3/4 Inch. No its not exactly like what you described. And it worked last winter. Oct 24, 2005 · Another thing to check is to feel the hoses that run through the firewall to the heater core. Any ideas / … read more Nov 5, 2018 · Oh well. Take some spray electrical cleaner and clean the two circular arks and the two fingers . A/C front automatic/auxiliary controls (CJ2), A/C front manual/auxiliary control (CJ3) PRICE: 164. Look towards the front of the seat cushion and there should be two bolts that hold the cushion to the seat frame. I noticiced that the Tahoe is running a little warm. Nov 21, 2023 · Flush and blow out the rear heater pipes and core and cap off the lines in case you or a future owner wants to reimplement it. Sounds like its not even giving you your second chance though. Battery, heavy Jan 30, 2022 · Heater Core Flush - Silverado - Sierra - Tahoe - Suburban - Yukon - Escalade Easy way to fix a lack of heat coming from your trucks heater system. Anyone know the precise location of this sensor Feb 6, 2019 · Remove the four screws , gently pull part. Thank you for all of the help and support!!!! Oct 3, 2022 · If voltage goes to the blower motor, it’ll need replacing. 3. 6 in. I removed the panel in the cargo area where the blower motor is and didn't find a blend door actuator in there. Rear axle, 3. Reactions: blondie70 , Marky Dissod , 89Suburban and 1 other person Jan 3, 2024 Oct 19, 2015 · 2) I removed and recentered the actuator, did a HVAC reset and stil no change. the other thing is the headlight switch connector, the connector some times goes bad and starts to melt or just comes out of the connector. The 2007 Tahoe lasts around 200,000 miles with some engine and stability control issues. As a failsafe since it has no idea what the actual coolant temp is, the PCM commands both fans on high speed and keeps the A/C off to prevent extra heat from the condenser. you may have to remove a plastic cover with several screws to locate it. only blows cold air. My rear air controls work fine. I noticed that the fan speed increases as the engine speed increases, so I thought the fan clutch might be seized. to/2PaJ1ZuTools - Feb 25, 2010 · 2003 Tahoe LT with dual auto climate control and aux HVAC controls (which don't work either, another issue). to/2Qt6slyBest Actuator - https://amzn. if I leave the line CHEVROLET > 2007 > TAHOE > 5. 73 rear axle ratio. Coolant plays a critical role in regulating the engine’s temperature by dissipating heat. Dirty evaporator. The nights are still cold here and I noticed the heater is not working correctly. Feel your passenger floorboard to see if it’s wet. Jan 2, 2018 · View all shops. Unable to control rear HVAC system temperature. Feb 28, 2020 · if you have no air coming out of the rear hot or cold then the blower motor or blower motor resistor may be bad, there is no blend door to completely cut off the air it blends either up to the roof vent or down to the floor vents or mixes hot/cold there is only 2 doors. Call tow truck after disconnecting negative cable for ten or so minutes and 20 ish restart tries…crank but no start. What would cause this? 2. Use dielectric grease small amount on the fingers. Runs real smooth on start and until the temperature gets half way to normal. dealership did it and they said it was programmed to the vehicle Today it did it again, I pulled the blower motor out of the dash and it was working, but about 6 inches from the blower motor towards the driver side the duct work was cold-condensation and it seems that blend door is not working properly. 3L engineHere is a v In this video we discuss common causes of low or no heat output from the HVAC system. Mar 7, 2016 · Today on 2CarPros we show you how to replace the blend door actuator motor on a Chevy Silverado, Tahoe, Suburban and this video guide will also work on a GMC Jan 27, 2023 · When the plastic deteriorates on these heater hose connectors they leak and break. The dealership put it on a Tech 2 to diagnose and I replaced the sensor at home. Alex Showalter. Oct 6, 2020 · 2007 - 2014 Tahoe/Yukon/Escalade Models. Heater hoses under hood are warm, but bottom hose connected to t … read more CHEVROLET > 2007 > TAHOE > 5. I've narrowed it to a bad cabin Air Temperature Sensor. Nov 10, 2010 · 197 posts · Joined 2009. Start engine, turn on AC, and see if the compressor drive plate (the center of the compressor) is turning at same speed as the belt and compressor pulley. If you have scale buildup in the head cooling passages it would mean real problems. Like. This video is for entertainment purposes only. OD Hose End 1; 1. My front controls: 90 degree setting gets hot heat. AC System Not Blowing Cold Enough. The question I have is that I got the Factory Installed remote starter and the heat is not turning on. I am losing coolant fairly quickly. OD Hose End 2; 0. 3. Here I show how to break Oct 6, 2023 · Hello I have a 2011 Chevy Tahoe. 23 ratio (Upgradeable to (GT4) 3. The rear auxiliary air/blower works just fine. Mar 29, 2011 · Recently acquired a 2001 Chevrolet Tahoe. Part # 15-72971. Anything less is cool/cold. You will notice excess grease on the finger ends and on the board. Limited Lifetime Warranty. I am not real familiar with this late of a model, but you have either a bad bad vacuum switch, bad electric motor or bad controls on your dash. the switch that i talk of is the signal switch , the handle is the switch, it bolts to side of steering column . opfor2; Dec 12, 2023; Interior; Replies 3 2007 - 2014 Tahoe/Yukon/Escalade Models. I ended up teaching myself how these systems work Dec 18, 2013 · These trucks are known for bad multifuction switches. Dec 28, 2014 · how to fix / repair heater or ac thats' only blowing on the passenger side of a gm gmc sierra yukon chevy tahoe silverado suburban 2003 2004 2005 2006 2007 b Dec 29, 2010 · Chevy 2005 tahoe z71 blows cold air in back but hot air in front. Feb 3, 2021 · Blend door actuator was functioning fine, but there was a blockage. 4. this switch controls the signals and the headlights and high /low beams. com Absolutely NO-E Heater Hose Connector Auxiliary Heater; 113mm Length; Auxiliary Air Conditioning And Heater; Inlet Hose Tee. Dec 4, 2008 · Mine has rear heat. ULTRA-POWER 800414 Oct 24, 2021 · Took it home, 9 days later I had no heat from drivers vents, would not defrost windshield after 1 hr running. 0. One of the primary reasons for engine overheating in Tahoe is a low level of coolant or antifreeze in the cooling system. Mar 16, 2022 · I recently saw a YT video where a guy had your same symptoms on his Escalade. I replaced the water pump, radiator hoses and thermostat. I manually operated the lever and ot all moves freely. A few days after changing these parts. Line: GAT. 2007 Chevrolet Tahoe. " Transmission, 4-speed automatic, electronically controlled with overdrive and tow/haul mode. 2 things I did was flush the engine and radiator and run cleaner thru it. Mine is doing same thing (04 silverado). (984) 203-7709. Mar 9, 2007 · I have a 99 Tahoe 5. ACDELCO Part# 15-629602007 NNBS, 2008, 20 Aug 4, 2017 · 1. The temp control seems to be working fine as I can feel it through all vents. Answered in 13 minutes by: Chevy Mechanic: Canadafix. Any seat from a 2003-2006 Chevy/GMC Silverado, Tahoe, Suburban, Sierra, Denali, Yukon or Escalade will work for your truck as long as it has the full 6 way power (not just the power forward and back with manual recline). 2. Dirty evaporator can also be the reason for AC problems on your Chevy Tahoe. So I replaced my thermostat. When the coolant level is low, there is not enough fluid to absorb and transfer heat away from the engine. On what temp shoud the fans run on high speed? Jul 31, 2020 · Learn how to fix the common problem of air only blowing out of the defrost or top vents on your Chevy Tahoe with this easy video tutorial. Heater Hose Engine To Throttle Body; Cut To Length: 6 Inch; Straight. If the door is turning, and you can see it turning, then it's probably working fine. It worked the night I bought it, not the next night. Notes: Air inlet door actuator, right or blend door actuator, heavy duty heater (C42), quantity per car: 2. NOTE: Plug the heater core tubes to avoid spilling coolant in the passenger compartment during removal. They aren’t easily removed but easily installed. Dec 27, 2016 · 2010 Avalanche - I can't get the mode on my heat/ac to change anymore. 2003 tahoe no rear heat blower works fine and heater hoses are warm going to the core - Chevrolet 2003 Tahoe question. Dealer said the heater core is bad and coolant isn’t flowing which seems odd to me. . Have a 2007 Yukon Denali. Attachment Method: Quick-Disconnect. Also, I cleaned the radiator externally too. Check Vehicle Fit. I checked the fuses that I thought correlated to it and none of them looked blown. If there’s no voltage, test the resistor (YouTube). - charge the battery like you did before and start the engine. Picked up today, let it run 45 minutes and no heat from any vents. 3 85,000 miles. Heat galore afterwards!Purchase Part Here (Updated 5-6-2019)Modul Equip cars, trucks & SUVs with 2007 Chevrolet Tahoe Hose (Heater) from AutoZone. I turned off the motor, and the fan moves with very little force required, but does not spin freely. If you have rear climate (which sure you do) turn heater to 90 so blows heat up front & see if blows warm out of rear vents or if always cool (that is normally one of the first signs of Control Module going bad). Sep 14, 2016 · Well, after a month, our heat is fixed! Turned out that someone before I bought it had put a new water pump on the Tahoe and somehow routed the hoses wrong. Dec 5, 2015 · My Tahoe's passenger side heated & cooled seat works fine. Police Package/Specialty Service no heat or air in the rear of your truck, check this out , quick simple fix. Reaction score. Basic rundown air blows REALLY well, but really cold on both sides. Just got an answer from Chevy Dealer. Just no air coming from the front. -disconnect the negative terminal on the battery. Apr 15, 2015 · The cheapest solution would be to buy a seat from a salvage yard and swap the module. ) Rear wheel drive. Price: Pack: Total: Alternate: No parts for vehicles in selected markets. Jan 3, 2010 · hello, the left side of my 2004 chevy tahoe heat is not working. 426 people reported this problem. I only see a constant 5v. At $8,906 – 9,980, it’s a very expensive used SUV given the number of problems it has. On Cooling, it works fine, although the fan is quite noisy when on top speed. Over time, they are known to clog and fail. Any ideas? Looked all over the place and no one has any idea Jun 6, 2008 · 42. 2005 Tahoe. 3L With Auxiliary Heater. The sensor was $15. I would check to see if the heater core or the AC core is blocked by dirt/debris. Hope this helps. Dec 22, 2011. Get Yours Today! We have the best products at the right price. As the interior’s heating relies on the engine’s cooling system, checking the level of your coolant is the easiest place to start as a low coolant level may prevent coolant from reaching the heater core, and dirty coolant may be a sign of a clogged cooling system. 6. zv he vk ru td bg mi mf of vn