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Home >> Chevrolet >> 2003 >> Chevy Express H2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System & Component Tests - 4.3L) >> Computerized Engine Controls >> Powertrain Control Module >> PCM Harness Resistance
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PCM Harness Resistance

WARNING: This page is about a different variant/trim than selected.

Turn ignition switch to LOCK position. Disconnect PCM and appropriate component harness connectors. Check for open or short circuits between appropriate PCM harness connector terminal and appropriate component harness connector terminal. If harness is open or shorted, repair as necessary.

Fig 1: Identifying PCM Connector C1 Terminals (1 Of 2)
G00140528Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying PCM Connector C1 Terminals (2 Of 2)
G00140529Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying PCM Connector C2 Terminals (1 Of 2)
G00140530Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying PCM Connector C2 Terminals (2 Of 2)
G00140531Courtesy of GENERAL MOTORS CORP.