Ignition Transmission Lock CheckWhile parked, and with the parking brake set, try to turnthe ignition to OFF in each shift lever position.• The ignition should turn to OFF only when the shiftlever is in PARK (P).• The key should come out only in OFF.Contact your GM Goodwrench® dealer if service isrequired.Parking Brake and AutomaticTransmission Park (P) Mechanism Check{CAUTION:When you are doing this check, your vehiclecould begin to move. You or others could beinjured and property could be damaged.Make sure there is room in front of yourvehicle in case it begins to roll. Be ready toapply the regular brake at once should thevehicle begin to move.Park on a fairly steep hill, with the vehicle facingdownhill. Keeping your foot on the regular brake,set the parking brake.• To check the parking brake’s holding ability:With the engine running and transmission inNEUTRAL (N), slowly remove foot pressure fromthe regular brake pedal. Do this until the vehicleis held by the parking brake only.• To check the PARK (P) mechanism’s holdingability: With the engine running, shift to PARK (P).Then release the parking brake followed by theregular brake.Contact your GM Goodwrench® dealer if service isrequired.Underbody Flushing ServiceAt least every spring, use plain water to flush anycorrosive materials from the underbody. Take careto clean thoroughly any areas where mud and otherdebris can collect.6-11
