How to replace the Transmission Oil Cooler on a 4L80-E/4L85-E on GMC Sierra 3500?

First, remove the grille assembly to replace the Transmission Oil Cooler on 4l80-e/4l85-e. Next, unscrew the Transmission Oil Cooler hoses from the Oil Cooler, then there was removal of the Oil Cooler bolts and push pins. Following this, extract the Oil Cooler from the car. For installation, the Oil Cooler slides back into position and bolts to the radiator brace, and that should be tightened to 12 nm (106 inch lbs.). Then, locate the push pins to the radiator brace, the Transmission Oil Cooler lines to the Oil Cooler, and finally, remount the grille assembly.

OEM GMC Sierra 3500 Transmission Oil Cooler

Trans Oil Cooler

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GMC Sierra 3500 Transmission Cooler
Part Number: 89040217
$397.89 MSRP: $594.75
You Save: $196.86 (34%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cooler, Engine Oil Cooler; Automatic Transmission Oil Cooler; Cooler, Transmission Oil Cooler
- Replaces: 15767445, 15170221
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Transmission Cooler
Part Number: 20880895
$188.54 MSRP: $281.82
You Save: $93.28 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cooler, Transmission Oil; Automatic Transmission Oil Cooler; Auxiliary Cooler; Cooler; Cooler, Transmission Oil Auxiliary; Cooler, Transmission Oil Cooler
- Replaces: 15124639, 25891509, 25877162, 15019344, 15097192, 15015464
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS

GMC Sierra 3500 Transmission Oil Cooler

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GMC Sierra 3500 Transmission Oil Cooler Parts Questions & Experts Answers

Transmission Cooler
89040217
Q: How to replace the Transmission Oil Cooler on a 4L80-E/4L85-E on GMC Sierra 3500?
A: First, remove the grille assembly to replace the Transmission Oil Cooler on 4l80-e/4l85-e. Next, unscrew the Transmission Oil Cooler Hoses from the Oil Cooler, then there was removal of the Oil Cooler bolts and push pins. Following this, extract the Oil Cooler from the car. For installation, the Oil Cooler slides back into position and bolts to the radiator brace, and that should be tightened to 12 nm (106 inch lbs.). Then, locate the push pins to the radiator brace, the Transmission Oil Cooler lines to the Oil Cooler, and finally, remount the grille assembly.