Ignition Transmission Lock Check - GMC Envoy XL 2003 Owner's Manual

Automatic Transmission Shift Lock
Ccntrol Sy-+er CheP
When you are doing this check, the vehicle
could move suddenly. If it does, you or others
could be injured. Follow the steps below.
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1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
Firmly apply the parking brake. See Parking Brake
2.
on page 2-29 if necessary.
Be ready to apply the regular brake immediately
if the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but don't start the engine. Without applying
the regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), your vehicle needs service.
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Ignition Transmission Lock Check

While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
The key should turn to LOCK only when the
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shift lever is in PARK (P).
The key should come out only in LOCK.
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