Transmission Cooler Recommendation for a 2008 Chevy Avalanche

Updated 01/19/2015 | Published 01/18/2015

Products Featured in This Question

Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient

(874)

$107.17

Derale High-Temperature Replacement Hose for Transmission - 11/32" Inner Diameter - 4' Long

(133)

$18.76

Derale Snap-In Radiator Adapter Fitting for GM

(274)

$16.69

Question:

D13504 Remove I want to install on a 2008 Avalanche LTZ 4x4 need due to high temps and milage boat towing. 1. Question: is the cooler installed in-line AFTER the radiator trans cooler? 2. Are these the appropriate items for install? Seems I have metal lines with @12in of rubber where entering radiator currently D13504 Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient D13035 Remove D13035 Derale Snap-In Radiator Adapter Fitting for GM D13003 Remove D13003 Derale High-Temperature Replacement Hose for Transmission Applications - 4foot Long

asked by: Emery

Expert Reply:

When installing a transmission cooler on a vehicle like the # D13504 on your 2008 Chevy Avalanche you will want to route the fluid first through your factory transmission cooler and then finally through the supplemental cooler before it returns to the transmission. Factory coolers will actually raise (or lower) the transmission fluid to the same temperature as the engine coolant since the coolers are integrated into the radiator.

If you were to route the supplemental cooler before the factory one you would actually end up cooling the fluid and then re-heating it back up to what it was before which would defeat the purpose of installing a supplemental cooler. That is why you route the supplemental cooler after.

For more info on cooler installations check out the FAQ article I attached on the subject.

The items you selected would be all that you would need to install the cooler. Part # D13504, # D13003 and # D13035.