Why is the transmission cooler in my car overheating?

Most automatic transmission vehicles utilize a fluid cooler inside the radiator to help remove heat from the transmission fluid. When this cooler fails it will allow transmission fluid to contaminate the coolant inside of the cooling system which inhibits the heat transfer of the coolant.

How does the radiator keep the engine from overheating?

by Lina Schofield. The radiator acts to protect the engine block from overheating when it is functioning properly. The radiator additionally keeps the pistons in working order, allowing the engine to run. Coolants pass through the engine block, flowing into the radiator to draw out excessive heat. The coolant then recycles through the engine.

Why is my Trans bad on my 4L60E?

Trans seems noisy when moving in 1st and Reverse, noise goes away instantly if you shift to N or the transmission goes into 3rd gear: Reaction planetary is worn out due to high miles or insufficient lubrication. Not a critical failure, but not a good sign either.

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.

Can a failing radiator cause an engine to overheat?

A failing radiator can cause the engine to run hot or overheat. Most radiators are made of metal and plastic. The plastic parts can become brittle and crack over time, causing a… Read More The bad thermostat can cause two different sets of problems, depending on whether it’s stuck open or stuck closed.

What should I do if my GM converter lock up?

NEVER run the vehicle in gear when supported only with a jack. Chock the drive wheels and apply the parking brake. In addition, some of the tests (test #11 and 12) require the transmission be opened and the valves are physically inspected. I do not recommend that you do this.

What to do if your GM converter does not light?

If the tester does not light, then check for 12 volts by the regular method. Check for 12 volts at both sides of the fuse. Locate the fuse box and the fuse marked “gauges” (most models). Connect the alligator clip of your test light to ground. Turn the ignition on.