Engine Coolant Heater
The engine coolant heater, if available, can help in cold weather conditions at or below −18°C (0°F) for easier starting and better fuel economy during engine warm-up. Plug in the coolant heater at least four hours before starting the vehicle. An internal thermostat in the plug-end of the cord will prevent engine coolant heater operation at temperatures above −18°C (0°F).
See also:
Pick-Up Box Identification and Fender Marker Lamps
The pick-up box identification lamps are LEDs. For replacement of the LED lighting assembly contact your dealer.
To replace a pickup box fender marker lamp bulb:
1. Press the tab from the back to re ...
Online Owner Center
Manage your vehicle (U.S.) at gmc.com. Click on “Owners,” then “Manage My GMC/Owners Login.”
Information and services customized for your specific vehicle — all in one convenient place.
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What to Use
To determine what kind of fluid to use, refer to Recommended Fluids and Lubricants
on page 11‑12. Always use the proper fluid.
Notice: Use of the incorrect fluid may damage the vehicle and th ...