Home/Chevrolet/Tahoe/Chevrolet Tahoe II (1999-2006)/Repair manual/Testing & Diagnostics/Engine Controls - System & Component Testing: Wiring

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Wiring diagrams Section: Testing & Diagnostics

Engine Control System Self-Diagnostics - 4.8L, 5.3L & 6.0L

Engine Controls - Strategy Based Engine Diagnosis

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Engine Controls - System & Component Testing: Wiring Chevrolet Tahoe II

Testing & Diagnostics

PCM Harness Resistance

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. See WIRING DIAGRAMS article. If harness is open or shorted, repair as necessary.