Sierra 3500 2WD V8-6.0L (2008)
1. Install the transmission oil cooler lines to the vehicle.
2. Install the cooling lines to the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection (
See: ) .
3. Install the engine protection shield. Refer to Engine Shield Replacement .
4. Lower the vehicle.
5. Install the transmission fluid cooler hose to the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and
Connection (See: ) .
6. Install the transmission fluid cooler hose to the Auxiliary oil cooler. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting
Disconnection and Connection (See: ) .
7. Install the front grill assembly. Refer to Radiator Grille Replacement (Chevrolet) Radiator Grille Replacement (GMC) .
Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection
Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection
Removal Procedure
Important: Perform the following procedure when removing the retaining rings and cooler lines from the quick connect fittings located
on the radiator and/or the transmission.
1. Pull the plastic cap back from the quick connect fitting and down along the cooler line about 5 cm (2 in).
2. Using a bent-tip screwdriver, pull on one of the open ends of the retaining ring in order to rotate the retaining ring around the quick connect fitting
until the retaining ring is out of position and can be completely removed.
3. Remove the retaining ring from the quick connect fitting.
4. Discard the retaining ring.
