Symptom Chart

Condition	Possible Sources	Action
Transmission overheating	Damaged radiator	REPAIR or INSTALL a new radiator. REFER to ENGINE COOLING .
	Plugged auxiliary fluid cooler	INSPECT auxiliary fluid cooler for blockage. INSTALL new if required. REFER to Auxiliary Transmission Fluid Cooler .
	System leaks	INSPECT transmission fluid cooler and tubes for leaks. REPAIR as required.
	Incorrect fluid level	ADJUST to correct level.
	Fluid condition	INSPECT according to instructions under Check Fluid Level and Condition. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 5R55S for 5R55S or AUTOMATIC TRANSAXLE/TRANSMISSION - 6R60 for 6R60.
	Damaged, blocked, reversed, leaking or restricted cooler lines or cooler tubes	INSPECT cooler lines and tubes. REPAIR or FLUSH as necessary.
	Engine concerns causing transmission to overheat	INSPECT engine cooling system. REFER to ENGINE COOLING .
	Excessive towing loads	CHECK gross vehicle weight.
	Incorrect engine idle or driveability concerns	REFER to the Introduction - Gasoline Engines .