1996 Chevrolet Tahoe Owner's Manual - Page 372

Steering Column Lock Check While parked, and with the parking brake set, try to turn the key to LOCKin each shift lever position. The key should turn to LOCK only when the shift lever is in PARK (P). The key should come out only in LOCK. Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake. 'To check the parking brake: With the engine running and transmission in NEUTRAL (N), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only. To check the PARK (P) mechanism's holding ability: With the engine running,shift to PARK (P). Then release all brakes. , Parking Brakeand Automatic Transmission PARK (P) Mechanism Check - - When you are doing this check, your vehicle could begin to move. You or otherscould be injured and property could be damaged. Make sure there room in is front of your vehicle in case it beginsto roll. Be ready to apply the regular brake atonce shouldthe vehicle begin to move. 7-45