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Tranny cooler

Taaaaaaahoe?

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BurbanZ71 Enthusiast

BurbanZ71

Posted
Posted

if you do a lot of towing you may want to swap in an instrument cluster from a 2500 or Esclade as they have the temp gauge for the tranny.

 

For whatever reason, GM has the the sensors in the tranny but no gauge in our dash.

 

I have heard a lot guys do this - supposed to be very easy.

redvett Senior Enthusiast

redvett

Posted
Posted

All auto transmissions have a coolers but towing packages have a aux. cooler in front of the A/C condenser. Should be 8" x 5" and can be seen easily by looking down through the hood latch hole in front of radiator.

opsbear7 Enthusiast

opsbear7

Posted
Posted

If you dont want to get the other guage cluster can you get a differnt guage and mount it in the cab....is the truck already wired for it or no?

toneman Enthusiast

toneman

Posted
Posted
All auto transmissions have a coolers but towing packages have a aux. cooler in front of the A/C condenser. Should be 8" x 5" and can be seen easily by looking down through the hood latch hole in front of radiator.

 

 

 

Unless I'm just blind and/or don't know exactly what to be looking for...my '04 DXL has the towing package and KNP RPO code, but I sure as heck don't see any 8x5-sized (or similar) object anywhere in front of the radiator. I do see a narrower "radiator"-like thing (8x3?) but I'm guessing that that's the A/C condensor?

 

I'm suspecting that my KNP aux tranny cooler is exactly as how ChevyTech007 described it--the tranny lines going into the main radiator. FWIW--I thought I remembered a GM document stating that they were gonna eliminate the external aux tranny cooler on their fullsized trucks/SUVs starting in '04...which if valid would explain why I have the KNP RPO but no "visible" external aux tranny cooler on my truck.

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted

The 8x3" cooler that you see,If its on the drivers side of the A/C condenser (kinda behind the drivers side headlamp) thats the power steering fluid cooler.

If you have "KNP" you have an auxilary tranny cooler,Plus you still have the standard cooler in the radiator itself. The fluid runs through both the aux.cooler and the radiator cooler.

All trucks with automatic transmissions have the "radiator transmission cooler" as standard equipment.

And No,GM did not eliminate the auxilary tranny cooler,My '04 has one as well as the '06's still have them.

CapitalTruck Senior Enthusiast

CapitalTruck

Posted
Posted

I think I remember hearing that they eliminated them in the 05 and beyond Avalanche (for the tow package they made a larger in-radiator cooler). They are definitely still factory installed with the KNP RPO code. I bought the whole operation from GM Accessories and installed it myself to my 4.8 Silverado that didn't have the auxilary "air to oil" transmission cooler.

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