GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 GMC Sierra Denali 🢒 Preface 🢒 Cautions and Notices 🢒 Transmission Fluid Cooler Hose/Pipe Replacement

Removal Procedure
  1. Remove the front grill assembly. Refer to Grille Replacement in Exterior Trim.

    2. Object Number: 396817 Size: SH
  2. Remove the transmission fluid cooler hose from the Auxiliary oil cooler. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .
  3. Remove the transmission fluid cooler hose from the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .
  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Remove the engine protection shield. Refer to Engine Protection Shield Replacement in Frame and Underbody.

    6. Object Number: 396804 Size: SH
  6. Remove the cooling lines from the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .
  7. Remove the oil cooling lines from the vehicle.

Installation Procedure

    Object Number: 396804 Size: SH
  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 .

    3. Object Number: 396817 Size: SH
  3. Install the engine protection shield. Refer to Engine Protection Shield Replacement in Frame and Underbody.
  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 .
  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 .
  7. Install the front grill assembly. Refer to Grille Replacement in Exterior Trim.