Sierra/Sierra Denali
2500 HD/3500 HD
Owner’s Manual
2022
2022 Sierra/Sierra Denali 2500 HD/3500 HD
Operating, servicing and maintaining a passenger
vehicle or o-highway motor vehicle can expose
you to chemicals including engine exhaust, carbon
monoxide, phthalates, and lead, which are known
to the State of California to cause cancer and birth
defects or other reproductive harm. To minimize
exposure, avoid breathing exhaust, do not idle
engine except as necessary, service your vehicle
in a well-ventilated area and wear gloves or wash
your hands frequently when servicing your
vehicle. For more information go to
www.P65Warnings.ca.gov/passenger-vehicle.
84767844 A
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United States
Canada
Customer Assistance
1-800-462-8782
Roadside Assistance
1-888-881-3302
Roadside Assistance
1-800-268-6800
Customer Assistance
1-800-263-3777
United States and Canada
Connected Services
1-888-4-ONSTAR
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ai161972604183_22_GMC_Sierra_Denali_2500HD3500HD_COV_en_US84767844A_2021MAY14.pdf 1 4/29/2021 3:54:02 PM
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