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Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough
room around the vehicle. It should be parked
on a level surface.
2. Firmly apply the parking brake. See Parking
Brake on page 124.
Be ready to apply the regular brake
immediately if the vehicle begins to move.
3. With the engine off, turn the ignition to ON,
but do not 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), contact
your GM Goodwrench
®
dealer for service.
Ignition Transmission Lock Check
While parked, and with the parking brake set,
try to turn the ignition to OFF in each shift lever
position.
• With an automatic transmission, the ignition
should turn to OFF only when the shift lever
is in PARK (P). The ignition key should
come out only in OFF.
• With a manual transmission, the ignition
should turn to OFF only when the key release
button is pressed. The ignition key should
come out only in OFF.
Contact your GM Goodwrench
®
dealer if service
is required.
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