As GM and GMC Vehicles became MORE & MORE Complicated to Diagnose from having Multiple BUS Systems... in many cases, Using ONLY OEM Parts can wind up being THE Only Repair Solutions. THIS Story is a Throw-Back to that Old Riddle:
Q - "When is a Door... NOT a Door?"
A - "When it's AJAR..."
Q - "When is a Door... NOT a Door?"
A - "When it's AJAR..."
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