GMC Sierra Owners Manuals

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Features
For most shoppers, the key feature will be the standard third-row seat. It has adequate room for children, but adults will not find it accommodating for more than a short trip. An optional second- ...

Easy Exit Driver Seat
This feature moves the seat rearward allowing the driver more room to exit the vehicle. To activate, turn the ignition off and open the driver door. If the driver door is already open, turning th ...

When to Check and Change Automatic Transmission Fluid
It is usually not necessary to check the transmission fluid level. The only reason for fluid loss is a transmission leak or overheated transmission. If a small leak is suspected, then use the followi ...