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2008 GMC Yukon Hybrid – Engine Stalls at Stops With Communication Loss
CUSTOMER CONCERN Customer states the engine stalls at stops instead of completing a normal Auto Stop. Multiple ECM, HPCM and TCM communication DTCs are stored. CAUSE Inspection following bulletin 08-07-30-021H confirmed chafed high-speed CAN wiring causing intermittent module communication loss. CORRECTION Repair chafed high-speed CAN wiring and protect harness from repeat contact. Clear communication DTCs and verify normal Auto Stop operation.
2008 Chevrolet Tahoe Hybrid – Engine Stalls at Stops With Network Codes
CUSTOMER CONCERN Customer states the engine stalls when stopping instead of completing a normal Auto Stop. Multiple ECM, HPCM and TCM communication DTCs are stored. CAUSE Inspection following bulletin 08-07-30-021H confirmed chafed high-speed CAN wiring causing intermittent module communication loss. CORRECTION Repair chafed high-speed CAN wiring and protect harness from repeat contact. Clear communication DTCs and verify normal Auto Stop operation.
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