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My 2102 Sierra SLT with automatic dual temperature controls recently started blowing full cold regardless of the temperature setting. It's been hot outside, so I don't mind on short trips, but on a longer ride, I keep turning the temperature up and it just keeps blowing full blast on cold, freezes you out. The outside ambient temperature reads correctly, so I'm thinking maybe the cabin temperature sensors have gone bad. I'm not sure where to find them and how to test them. Otherwise I suppose it's in the Body Control Module? Any ideas will be greatly appreciated.
By Alex Martin
Hey guys, i have a 2005 gmc yukon with electric fans. It is the 5.3 and the electric fans will not turn on. I have replaced the coolant temp sensor and the relays and it is still inop. If i send 12v to the fans they will turn on and constant power is getting too the two 4 prong relays my tools will not fit to test the 5 prong. None of the fueses are blown either and relays have resistance to them. It has a slight hickup on startup but not much of one and sadly no they do not work with the ac on the temp will go straight past 210 when parked
While pulling our 2013 drv mobile suites 36tksb3 5th wheel up interstate 70 headed into Denver we overheated about 1/4 mile from the summit. We pulled over and let the truck cooldown and then proceeded to finish the climb into the tunnel. Once in the tunnel we allowed the truck to coast down hill, but the truck engine temperature continued to increase until we receive the warning "Losing Power Shutoff Engine". The ambient temperature was 55 F., windows down, air off, and coasting downhill in a tunnel, and the engine shut off. With no power steering or brakes I coasted thru the tunnel and took the first exit which luckily was not a sharp turn, and there was a nice large spot to stop at the bottom.
The truck operated fine on the rest of the drive to Davenport, Iowa, but since it needed a fuel filter change I took it to the local Chevy dealership. That was a week ago and they can still not tell us why it overheated, or if there is a problem we need to have fixed. They appear to be lost and trying to solve the check engine codes they found which do not appear to have anything to do with the engine overheating and shutting off. I understand we are pulling a heavy load, but I did not expect the truck to overheat with a 55 F ambient temperature. I was traveling in the slow lane, about 40 mph, and in the tow/haul mode. Does anyone have any suggestion? I am thinking about picking up my truck as it appears this dealer does not have any idea how to fix my problem.
Hey guys so I have a 2019 Silverado 1500LD with a 3.42 rear end with 11k on the clock. I've been noticing that my engine or coolant temp goes passed 210F but when it hits the next 1/8 gauge stick it goes back down passed the middle mark to 190°F. Is that normal for 7000 pounds uphill towing in 95°F weather. Talking about the 5N grapevine in Cali for those who know the climb.
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