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

EEPROM Programming

CAUTION: The ignition should always be "off" when installing or removing the VCM-A connectors.

1.Set-up:

^ Battery is charged.
^ Ignition is "ON."
^ Battery/cig. lighter connection secure.
^ Data Link Connector (DLC).

2. Refer to up-to-date Techline terminal/equipment user's instructions.
3. If Vehicle Control Module (VCM-A) fails to program, do the following:

^ Check all VCM-A connections.
^ Check Techline terminal/equipment for latest software version.

^ Try again to program the VCM-A. If it fails again, replace the VCM-A. Refer to VCM-A replacement. With Vehicle Control Module (VCM-A)

4. Perform the Idle Air Control (IAC) valve reset procedure with TECH 1 scan tool. Use misc tests.

Functional Check
^ Use Techline terminal/equipment to perform the "On-Board Diagnostic (OBD) System Check,"

OR

^ Refer to On-Board Diagnostic (OBD) System Check in System Diagnosis/Procedures. Testing and Inspection
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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