GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Envoy - 2WD 🢒 Engine 🢒 Engine Cooling 🢒 Coolant Heater Cord Replacement

Removal Procedure

    Object Number: 755428 Size: SH
  1. If equipped with a 4.2L engine, remove the powertrain control module (PCM).
  2. Remove the coolant heater cord from the engine harness bracket (1).
  3. Remove the coolant heater cord from the coolant heater (2).

    4. Object Number: 898845 Size: SH
  4. If equipped with a 5.3L or 6.0L engine, disconnect the coolant heater cord from the coolant heater (1).
  5. Remove the coolant heater cord clip from the engine harness.

    6. Object Number: 755434 Size: SH
  6. Disconnect the coolant heater cord retainers (1) from the battery cover.

Installation Procedure

    Object Number: 755434 Size: SH
  1. Connect the coolant heater cord retainers (1) to the battery cover.

    2. Object Number: 898845 Size: SH
  2. If equipped with a 5.3L or 6.0L engine, connect the coolant heater cord to the coolant heater (1).
  3. Install the coolant heater cord clip to the engine harness.

    4. Object Number: 755428 Size: SH
  4. If equipped with a 4.2L engine, install the coolant heater cord to the coolant heater (2).
  5. Install the coolant heater cord to the engine harness bracket (1).
  6. Install the PCM.