Allison - Automatic Transmission

Transmission Fluid Auxiliary Cooler Replacement (Gas)

Removal Procedure





1. Remove the radiator grille. Refer to Radiator Grille Replacement (GMC) Service and RepairRadiator Grille Replacement (Chevrolet) Service and RepairRadiator Grille Replacement (Chevrolet HD) Service and RepairRadiator Grille Replacement (GMC HD) Service and Repair.

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 Replacement Service and Repair.

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 (106 lb in).

3. Connect the transmission oil cooler lines to the auxiliary cooler. Refer to Transmission Fluid Cooler Hose/Pipe Replacement Service and Repair.

4. Install the radiator grille. Refer to Radiator Grille Replacement (GMC) Service and RepairRadiator Grille Replacement (Chevrolet) Service and RepairRadiator Grille Replacement (Chevrolet HD) Service and RepairRadiator Grille Replacement (GMC HD) Service and Repair.

5. Check and add transmission fluid as necessary.