See also:

Recommended Fluids and Lubricants
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Convenience Net
This vehicle may have a convenience net located in the rear of the vehicle. Attach it to the cargo tie&-downs for storing small loads. Do not use the net to store heavy loads. ...

Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail GMC, the letter should be addressed to: United States GMC Customer Assistance ...