Transmission Cooler: Service and Repair

Transmission Fluid Auxiliary Cooler Replacement

Removal Procedure




1. Remove the front grill assembly. Refer to Fascia Grille Replacement (Escalade) Fascia Grille ReplacementFascia Grille Replacement (Z71) Fascia Grille Replacement (Z71)Fascia Grille Replacement (GMC Denali XL) Fascia Grille ReplacementFascia Grille Replacement (Suburban, Tahoe) Fascia Grille ReplacementFascia Grille Replacement (Yukon) Fascia Grille ReplacementFascia Grille Replacement (GMC Yukon Hybrid 2 Mode) Fascia Grille Replacement.
2. Place a drain pan under the vehicle.
3. Disconnect the transmission oil cooler lines from the auxiliary cooler. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection.
4. Remove the auxiliary oil cooler bolts (1) and push pins (2).
5. Remove the auxiliary oil cooler from the vehicle.

Installation Procedure




1. Install the auxiliary oil cooler to the vehicle.

Caution: Refer to Fastener Caution Fastener Caution.

2. Install the bolts (1) and the push pins (2) that retain the auxiliary oil cooler to the radiator brace.

Tighten the bolts to 12 Nm (9 lb ft).

3. Connect the transmission oil cooler lines to the auxiliary cooler. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection.
4. Install the front grill assembly. Refer to Fascia Grille Replacement (Escalade) Fascia Grille ReplacementFascia Grille Replacement (Z71) Fascia Grille Replacement (Z71)Fascia Grille Replacement (GMC Denali XL) Fascia Grille ReplacementFascia Grille Replacement (Suburban, Tahoe) Fascia Grille ReplacementFascia Grille Replacement (Yukon) Fascia Grille ReplacementFascia Grille Replacement (GMC Yukon Hybrid 2 Mode) Fascia Grille Replacement.