What are common reasons my GMC Yukon overheats?
What are common reasons my GMC Yukon overheats? While there are a variety of reasons your GMC Yukon is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. See what others are asking about their GMC Yukon.
What kind of transmission does GMC Yukon 6L80E have?
On a recent road trip, the 6-speed automatic (6L80E) transmission stumbled during the 2-3 shift while driving through the mountains and went into a failsafe mode. The check engine light came on. I pulled over, turned the ignition off and on again, and the truck operated normally. The CEL remained on for the next several ignition cycles.
What should I do if my transmission is overheating?
What you can do to prevent transmission overheating. Check the transmission fluid level and color. Change the transmission fluid according to your manufacturer’s recommended maintenance schedule. Consider a transmission cooler to help your car’s cooling system.
What did I do with my GMC Yukon cel?
The CEL disappeared after a few ignition cycles. A few TSBs, #PIP4304A and #PIP4184B, and 09-07-30-004A, appear to be on point. I’m not that familiar with how automatic transmissions work, but the TSBs appear to involve disassembly of the transmission and the possible replacement of valves, control modules, etc., which sounds fairly involved.
What are common reasons my GMC Yukon overheats? While there are a variety of reasons your GMC Yukon is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. See what others are asking about their GMC Yukon.
Why does my transmission keep overheating while towing?
Either way, the solenoid should be checked if all other issues have been addressed and your transmission still overheats. Be aware of other possible causes of transmission overheating. Towing heavy loads makes your transmission work harder than normal. Heavy towing means that your transmission should be serviced more often.
On a recent road trip, the 6-speed automatic (6L80E) transmission stumbled during the 2-3 shift while driving through the mountains and went into a failsafe mode. The check engine light came on. I pulled over, turned the ignition off and on again, and the truck operated normally. The CEL remained on for the next several ignition cycles.
Can a defective solenoid cause a transmission to overheat?
A defective solenoid has to be replaced. A thorough diagnosis of your transmission overheating issues should be able to identify the solenoid as the problem, but sometimes the underlying circuitry can be the issue. Either way, the solenoid should be checked if all other issues have been addressed and your transmission still overheats.