2020 Chevrolet Suburban Service and Repair Manual

This factory service and repair manual for the 2020 Chevrolet Suburban narrows to two engines and three trims: the 5.3L overhead-valve V8 of 325 cubic inches and the 6.2L of 376, both naturally aspirated and both able to take flex fuel or gasoline, in a four-door sport utility sold as LS, LT and Premier. The gap between the two engines is wide enough that fuel, ignition and mechanical figures are given for each, while the brake, steering, suspension, climate and body electrical sections apply to all three trims alike.

Engines covered

• 5.3L V8 (325 cu in) — OHV, naturally aspirated, flex-fuel or gasoline
• 6.2L V8 (376 cu in) — OHV, naturally aspirated, flex-fuel or gasoline

Body styles covered

• 4-door sport utility

Trims covered

• LS
• LT
• Premier

Known issues on the 2020 Suburban. Forty-four complaints stand on the record for this model year, spread across the engine with 10, the power train with nine and the electrical system with five. Nothing in that distribution amounts to a dominant fault, and the manual treats all three as ordinary diagnostic ground: engine mechanical and sensor testing with the specifications to judge a reading against, transmission and driveline procedures with fluid and shift criteria, and wiring diagrams with connector, ground and circuit-protection locations for tracing an electrical condition to its source.