Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.
• The ignition should turn to LOCK/OFF only when the shift lever is in P (Park).
• The ignition key should come out only in LOCK/OFF.
Contact your dealer if service is required.
See also:
Diagnostics
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check the engine, transmission, antilock brakes, and major vehicle systems. It also
checks the tire pressures, if the v ...
Cargo & Towing
The Yukon Denali is a spacious three-row SUV for people, but that's it. If
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Tips and Troubleshooting Chart
Problem
Recommended Action
There is no power.
The ignition might not be turned to ON/RUN or ACC/ ACCESSORY.
The picture does not fill the screen. There are black bor ...