See also:

Malfunction Indicator Lamp
A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors the operation of the vehicle to ensure emissions are at acceptable levels, to produce a cleaner environment. This ligh ...

Object Detection System Messages
PARK ASST BLOCKED SEE OWNERS MANUAL This message displays if there is something interfering with the park assist system. See Ultrasonic Parking Assist on page 9‑66 for more information. PARK A ...

Engine Air Cleaner/Filter
If the vehicle has a diesel engine, see “Pickup Models” under “Engine Air Cleaner/Filter” in the Duramax® Diesel Supplement for the correct inspection and replacement procedures. See Engine ...