gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

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Sierra Denali RWD V8-6.2L (2009)

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Left Rear Frame Rail (20/30 Series)

1 - Trailer Connector (except MEX/EXP)
2 - Trailer Brake Control Module (JL1)
3 - Trailer Brake Control Relay (JL1)

Rear Frame and Underbody Components (31 Series)

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