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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1776 (Engine Cooling System) >> Repair Instructions >> Coolant Heater Cord Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. If equipped with a 4.2L engine, remove the PCM. Refer to POWERTRAIN CONTROL MODULE .
  2. Remove the coolant heater cord from the engine harness bracket (1).
    Fig 1: View Of Engine Harness Bracket & Coolant Heater Cord
    GM755428Courtesy of GENERAL MOTORS CORP.
  3. Remove the coolant heater cord from the coolant heater (2).
  4. If equipped with a 5.3L engine, disconnect the coolant heater cord from the coolant heater (1).
    Fig 2: View Of Coolant Heater (LM4)
    GM898845Courtesy of GENERAL MOTORS CORP.
  5. Remove the coolant heater cord clip from the engine harness.
  6. Disconnect the coolant heater cord retainers (1) from the battery cover.
    Fig 3: View Of Heater Cord Retainers
    GM755434Courtesy of GENERAL MOTORS CORP.
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