OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview on page 14‑1 for more information.
See also:
Other Rainy Weather Tips
Besides slowing down, other wet weather driving tips include:
• Allow extra following distance.
• Pass with caution.
• Keep windshield wiping equipment in good shape.
• Keep the windshield ...
Bulb Replacement
For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑29.
For any bulb-changing procedure not listed in this section, contact your dealer. ...
How to Check Lubricant
2500HD with 6.0 L
All Other Series and Engines
To get an accurate reading, the vehicle should be on a level surface.
• For all 4.3 L, 4.8 L and 5.3 L 1500 Series applications, the proper leve ...