Sierra 3500 Denali 4WD V8-6.0L (2011)
1 - Driver Door Frame
2 - X205
3 - X102 (JL1)
4 - Accelerator Pedal Position (APP) Sensor Connector
5 - Junction Block - Left I/P (except MEX)
Chassis Harness (31 Series)
GMC Workshop Service and Repair Manuals
Electrical - Intermittent MIL/DTC P2138/Reduced Power|Page 8704 >
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