2004 Chevrolet S10 PickupFACTORY OEM SERVICE PROCEDURE

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Replacing the body control module (BCM) may be necessary when you service the body control system.

IMPORTANT: The ignition switch should be in the OFF position when connecting or disconnecting the connectors to the BCM. Always disconnect the Brown BCM connector FIRST and connect the Brown BCM connector LAST. The BCM can set DTC(s) with the ignition switch in the OFF position. The BCM has battery run down protection for the courtesy lamp circuit. The BCM battery run down protection can not detect shorts on inputs or other circuits which it does not control. The scan tool can be used to put the BCM to sleep in order to check for current draws on circuits which are not controlled by the BCM or controlled by the battery run down protection system. If an excessive current draw is detected, refer to Battery Electrical Drain/Parasitic Load Test (w/BCM) in Engine Electrical.
  1. Remove the radio from the vehicle. Refer to Radio Replacement in Entertainment.
  2. Remove the heater control.

    Pull the heater control (2) out and down in order to gain access to the body control module.

    Fig 1: View Of Heater Control
    GM499433Courtesy of GENERAL MOTORS CORP.
  3. Push upward on the bracket retainer slightly and pull the body control module (2) from the bracket (1) at an angle.
    Fig 2: Identifying Body Control Module
    GM492307Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the electrical connectors (2) from the body control module (1).
    Fig 3: Identifying Body Control Module Electrical Connectors
    GM506273Courtesy of GENERAL MOTORS CORP.
  5. Remove the body control module from the vehicle.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.