How to service the 4L60-E Automatic Transmission Oil Cooler on GMC C3500?

The service procedure for the 4l60-e automatic Transmission Oil Cooler starts by removing the grille assembly. First disconnect the Oil Cooler line from its attachment point to the Oil Cooler before removing the bolt which attaches the auxiliary Oil Cooler brackets to the radiator support. Service begins by removing the four bolts and nuts which fasten the auxiliary Oil Cooler between its two brackets. Secure the auxiliary Oil Cooler to the brackets first by passing four bolts into four nuts then tighten all bolts to 6 nm (53 inch lbs.). You should put the four bolts through the radiator support to attach the Oil Cooler brackets before final tightening to 10 nm (89 inch lbs.). Finish the installation by hooking up the Oil Cooler line and installing the grille into position.

OEM GMC C3500 Transmission Oil Cooler

Trans Oil Cooler

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GMC C3500 Transmission Cooler Part Number: 89022535
$186.49 MSRP: $278.77
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Product Specifications
- Other Name: Cooler, Engine Oil Cooler; Cooler, Transmission Oil Cooler
- Replaces: 15995536
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2000 GMC C3500 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
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GMC C3500 Transmission Cooler Part Number: 89022577
Product Specifications
- Other Name: Cooler, Engine Oil Cooler; Cooler, Transmission Oil Cooler
- Replaces: 15995535
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997-2000 GMC C3500 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
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GMC C3500 Transmission Cooler Part Number: 15990593
Product Specifications
- Other Name: Cooler, Transmission Oil Cooler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 GMC C3500 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
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GMC C3500 Transmission Cooler Part Number: 15974686
Product Specifications
- Other Name: Cooler, Transmission Oil Cooler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993 GMC C3500 | Sierra, Sierra SLE, Sierra SLX | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS

GMC C3500 Transmission Oil Cooler

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GMC C3500 Transmission Oil Cooler Parts and Q&A

Transmission Cooler
89022535
Q: How to service the 4L60-E Automatic Transmission Oil Cooler on GMC C3500?
A:
The service procedure for the 4l60-e automatic Transmission Oil Cooler starts by removing the grille assembly. First disconnect the Oil Cooler line from its attachment point to the Oil Cooler before removing the bolt which attaches the auxiliary Oil Cooler brackets to the radiator support. Service begins by removing the four bolts and nuts which fasten the auxiliary Oil Cooler between its two brackets. Secure the auxiliary Oil Cooler to the brackets first by passing four bolts into four nuts then tighten all bolts to 6 nm (53 inch lbs.). You should put the four bolts through the radiator support to attach the Oil Cooler brackets before final tightening to 10 nm (89 inch lbs.). Finish the installation by hooking up the Oil Cooler line and installing the grille into position.