OnStar Services

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Shifting out of Park
This vehicle is equipped with an electronic shift lock release system. The shift lock release is designed to: Prevent ignition key removal unless the shift lever is in P (Park) with the shift ...

Shifting out of Park
This vehicle is equipped with an automatic transmission shift lock control system. The shift lock control is designed to prevent movement of the shift lever out of P (Park), unless the ignition is i ...

Weight of the Trailering Combination
It is important that the combination of the tow vehicle and trailer does not exceed any of its weight ratings — GCWR, GVWR, RGAWR, Trailer Weight Rating or Tongue Weight. The only way to be sure i ...