OnStar Services

See also:

TPMS Sensor Matching Process
Each TPMS sensor has a unique identification code. The identification code needs to be matched to a new tire/wheel position after rotating the vehicle’s tires or replacing one or more of the ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, notify General Motors. Call 1-800-458-8006, or write: Cadillac Customer Assistance Center Cadillac Motor Car Divi ...

Engine Compartment Overview
6.2L V8 Engine A. Engine Air Cleaner/Filter  . B. Coolant Surge Tank and Pressure Cap. See Cooling System  . C. Remote Positive (+) Terminal. See Jump Starting  . D. Battery  ...