Electrical System

See also:

Retained Accessory Power (RAP)
The following vehicle accessories can be used for up to 10 minutes after the engine is turned off: • Audio System • Power Windows • OnStar System (if equipped) • Sunroof (if equipped) The ...

Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech impaired and who use Text Telephones (TTYs), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user can communicat ...

Engine Coolant
The cooling system in the vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in the vehicle for 5 years or 240 000 km (150,000 mi), whichever occurs first. The follo ...