GM Truck Club Forum banner
1 - 6 of 6 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter · #1 ·
I have a 2005 2500hd Sierra crew can 4x4 6.0 with a 4l80e that’s over heating and can’t figure out why. I’ve replaced the rad trans cooler cooler lines tranny temp sensor and the torque converter. Tranny shifts great just over heats flushed three times three different filters nothing on the magnet. Just even went after the cooling part of the motor new water pump tstat heater core flush and still the tranny is over heating. Any ideas
 

·
Registered
‘01 Silverado 2500HD 8.1/Allison 5sp xcab long bed
Joined
·
4,001 Posts
Howdy and welcome, Dub.

You might not have an actual overheating problem. If you can get an aftermarket gauge and check it against the dash gauge? Maybe even just a laser thermometer and check the oil line leaving the case? That would be the one that connects to the top of the radiator cooler.

My Allison gets an aneurism once in a while and will throw a temperature code when it’s ice cold.
 

·
Registered
‘01 Silverado 2500HD 8.1/Allison 5sp xcab long bed
Joined
·
4,001 Posts
That’s an even better thought.
 
  • Like
Reactions: thegawd

·
Registered
2001 Suburban 5.3L, 298k miles
Joined
·
1,667 Posts
Is your torque converter locking up? Slippage creates a lot of heat.
 

·
Registered
Joined
·
4,265 Posts
Man lately there are so many important questions asked and then absolutely no response from the people who asked the questions.
 
1 - 6 of 6 Posts
Top