Owner's guide for 2020 GMC Yukon, Yukon XL, and Denali vehicles covering operation, maintenance, safety, and features.
This manual provides detailed instructions for operating and maintaining the 2020 GMC Yukon, Yukon XL, and Denali. It covers vehicle controls, safety systems, climate and infotainment features, and maintenance procedures. Sections include keys, doors, windows, instrument panel, driving, vehicle care, and technical data such as fluid capacities and engine specifications. It also includes safety warnings and symbols for hazard awareness.
| 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) |
The 5.3L V8 has a spark plug gap of 0.95–1.10mm (0.037–0.043 in) and engine code 'C'.
The VIN is in the front corner of the instrument panel, on the driver side, visible through the windshield from outside.
The engine code for the 5.3L V8 is C.