GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Denali 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 6L50/6L80/6L90 🢒 Transmission Fluid Cooler Hose/Pipe Replacement

Removal Procedure
  1. Remove the front grill assembly. Refer to Radiator Grille Replacement.

    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.

    5. Object Number: 1705099 Size: SH
  5. Remove the transmission cooling line bracket retaining bolt (2).
  6. Remove the cooling lines from the transmission.
  7. Remove the oil cooling lines from the vehicle.

Installation Procedure

    Object Number: 1705099 Size: SH
  1. Install the transmission oil cooler lines to the vehicle.
  2. Install the cooler lines to the transmission.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the transmission cooler line bracket bolt (2).

    4. Tighten
    22 N·m (16 lb ft)

  4. Lower the vehicle.

    5. Object Number: 396817 Size: SH
  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 Radiator Grille Replacement.