Pickup Conversion to Chassis Cab
We are aware that some vehicle owners might consider having the pickup box removed and a commercial or recreational body installed. Owners should be aware that, as manufactured, there are differences between a chassis cab and a pickup with the box removed which could affect vehicle safety.
The components necessary to adapt a pickup to permit its safe use with a specialized body should be installed by the body builder.
See also:
If the On Indicator Is Lit for a Child Restraint
If a child restraint has been installed and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as bl ...
Cooling System
If the vehicle has the Duramax® Diesel engine, see the Duramax® Diesel Supplement for more information.
The cooling system allows the engine to maintain the correct working temperature.
5.3 L En ...
Door Ajar Messages
DOOR OPEN
A door open symbol will be displayed on the DIC showing which door is open. If
the vehicle has been shifted out of P (Park), a DOOR OPEN message will also be displayed.
Close the door c ...





