GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 DTS 🢒 Engine 🢒 Engine Cooling 🢒 Coolant Heater Cord Replacement

Removal Procedure

    Object Number: 1667236 Size: SH
  1. Remove the surge tank inlet hose/pipe. Refer to Radiator Surge Tank Inlet Hose/Pipe Replacement.
  2. Disconnect the coolant heater cord electrical connector (2) from the right coolant heater electrical connector (1).

    3. Object Number: 1667235 Size: SH
  3. Disconnect the coolant heater cord electrical connector (3) from the left coolant heater electrical connector (2).
  4. Cut the coolant heater cord strap (4) at the engine harness.
  5. Remove the coolant heater cord clip (1) from the lift hook bracket.

    6. Object Number: 1662134 Size: SH
  6. Remove the coolant heater cord clips from the fuel rail studs.
  7. Cut the coolant heater cord strap at the engine harness.

Installation Procedure

    Object Number: 1662134 Size: SH
  1. Install the coolant heater cord clips to the fuel rail studs.
  2. Install a NEW strap attaching the coolant heater cord to the engine harness.

    3. Object Number: 1667235 Size: SH
  3. Install the coolant heater cord clip (1) to the lift hook bracket.
  4. Install a NEW strap attaching the coolant heater cord to the engine harness.
  5. Connect the coolant heater cord electrical connector (3) to the left coolant heater electrical connector (2).

    6. Object Number: 1667236 Size: SH
  6. Connect the coolant heater cord electrical connector (2) to the right coolant heater electrical connector (1).
  7. Install the surge tank inlet hose/pipe. Refer to Radiator Surge Tank Inlet Hose/Pipe Replacement.