Diagnostic Aids

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

Fig 1: CODE 32, Schematic, EGR System Error (4.3L C & K Series & 4.3L P Series)

Fig 2: CODE 32, Schematic, EGR System Error (4.3L S & T Series P/U- Exc. Turbo & CPI)

Fig 3: CODE 32, Flowchart, EGR System Error (4.3L C,K & P Series & 4.3L S & T Series (Exc. Turbo & CPI))