GMC Sierra Owners Manuals

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Security Light
The security light should come on briefly as the engine is started. If the system is working normally, the indicator light turns off. If it does not come on, have the vehicle serviced by your dealer ...

Lap Belt (Crew and Extended Cab)
This section is only for the lap belt. To learn how to wear a lap-shoulder belt, see Lap-Shoulder Belt on page 3‑15. Your vehicle may have a center seating position. When you sit in the center ...

Timer
Press the trip/fuel button until TIMER displays. This display can be used as a timer. To start the timer, press the set/ reset button while TIMER is displayed. The display will show the amount of tim ...