2018 Chevrolet Suburban Service and Repair Manual

This factory service and repair manual for the 2018 Chevrolet Suburban covers four trims, HD, LS, LT and Premier, in a single four-door sport utility body, with two naturally aspirated overhead-valve V8s beneath: a 6.0L of 364 cubic inches on gasoline or flex fuel, and a 5.3L of 325 cubic inches on flex fuel or gasoline. Where the two share a procedure the manual says so; where clearances, capacities or calibration figures diverge it gives each engine its own number, which is the difference between a repair that holds and one that comes back.

Engines covered

• 6.0L V8 (364 cu in) — OHV, naturally aspirated, gasoline or flex-fuel
• 5.3L V8 (325 cu in) — OHV, naturally aspirated, flex-fuel or gasoline

Body styles covered

• 4-door sport utility

Trims covered

• HD
• LS
• LT
• Premier

Known issues on the 2018 Suburban. Eighty-one complaints are on record for this year, led by the power train with 17, the electrical system with 13 and the engine with eight. The counts are modest, but the systems are the ones an owner notices immediately when they misbehave. Transmission and driveline diagnosis here runs from fluid condition and pressure checks through shift-quality charts to component overhaul; the electrical sections supply full wiring diagrams and connector views; and the engine sections give mechanical specifications, sensor testing and the sequence for tracing a running fault.