Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 1992 GMC Yukon, 1992 GMC Vandura Special, 1992 GMC Vandura, 1992 GMC Value Van, and 1992 GMC Suburban. However, it is still accessible from the selected car via links, so may be relevant.

Prior to replacing PCM, check resistance of all PCM-controlled solenoids and relays. Replace any with a resistance value less than 20 ohms.

Fig 1: Code 32, Schematic, EGR System Error

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code 32, Flow Chart, EGR System Error

Courtesy of GENERAL MOTORS CORP.