1995 Chevrolet S10/T10 P/U 4WD V6-262 4.3L VIN W CPIFACTORY OEM SERVICE PROCEDURE

With Vehicle Control Module (VCM-A)

Servicing VCM-A:

Factory service manual diagram





Refer to Image for removal and installation of the Knock Sensor (KS) Calibration Programmable Read Only Memory (PROM).

CAUTION: To prevent internal Vehicle Control Module (VCM-A) damage, the ignition must be "OFF" when disconnecting or reconnecting power to the VCM-A (for example, battery cable, Engine Control Module (ECM) fuse, jumper cables, etc.).

CAUTION: To prevent possible Electrostatic Discharge damage to the VCM-A, Do Not touch the connector pins or soldered components on the circuit board.
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:

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

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