Key facts
- Brand
- GMC
- Model
- 2020
- Category
- Vehicle maintenance
- Industry
- Automotive
- Documents
- 2
- Languages
- EN
- Last added
- 2026-11-01
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GMC Sierra Denali 2020 Owner Manual
This manual provides comprehensive instructions for the 2020 GMC Sierra Denali, including key features, door and window operations, seating and restraint systems, storage, and instrument controls. It details the use of the infotainment system, climate controls, and driving aids such as lane keep assist and adaptive cruise control.
Read onlineGMC 2020 specifications
| Engine Cooling System (5.3L V8) | 16.8 L (17.8 qt) |
|---|---|
| Fuel Tank (Short Wheelbase) | 98.4 L (26.0 gal) |
| Spark Plug Gap (5.3L V8) | 0.95–1.10mm (0.037–0.043 in) |
All GMC 2020 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What are the engine specifications for the 5.3L V8?
The 5.3L V8 has a spark plug gap of 0.95–1.10mm (0.037–0.043 in) and engine code 'C'.
Where is the Vehicle Identification Number (VIN) located on the vehicle?
The VIN is in the front corner of the instrument panel, on the driver side, visible through the windshield from outside.
Where is the Vehicle Identification Number (VIN) located?
The VIN is located in the front corner of the instrument panel on the driver side, visible through the windshield.
What does the symbol '!' indicate on the dashboard?
The '!' symbol indicates the Antilock Brake System (ABS).