GMC YUKON XL 2003 Manual page 475

Starter Switch Check
L %
CAUTION:
When you are doing this check, the vehicle
could move suddenly. If it does, you or others
could be injured. Follow the steps below.
Automatic Transmission Shift Lock
Control System Check
1. Before you start, be sure you have enough room
2. Firmly apply both the parking brake and the regular
around the vehicle.
brake. See Parking Brake on page
2-35
if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, your
vehicle needs service.
When you are c-.ng this check, the \w.licle
could move suddenly. If it does, you or others
could be injured. Follow the steps below.
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
2-35
if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
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.
3. With the engine off, turn the key to the RUN
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