2018 GMC Canyon Service and Repair Manual

This factory service and repair manual for the 2018 GMC Canyon has six trims to keep straight, Base, All Terrain, Denali, SL, SLE and SLT, across two four-door bodies, the extended cab and the crew cab. Three engines carry through the year: the naturally aspirated 3.6L V6, the turbocharged 2.8L inline-four diesel and the 2.5L inline-four. Engine mechanical, fuel and emissions coverage is written separately for each of them, while chassis, body and circuit work is documented once, with full specifications and wiring diagrams.

Engines covered

• 3.6L V6 (222 cu in) — DOHC, naturally aspirated, gasoline
• 2.8L inline-four (171 cu in) — DOHC, turbocharged, diesel
• 2.5L inline-four (153 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door extended cab pickup
• 4-door crew cab pickup

Trims covered

• Base
• All Terrain
• Denali
• SL
• SLE
• SLT

Known issues on the 2018 Canyon. The year's single recall covers a high-pressure fuel pump that may work free of its mounting flange and damage the adjacent fuel line, with a leak and a fire risk if it does. Owner complaints number 52, and almost half of them concern the powertrain, with the electrical system and steering some way behind. Transmission, driveline and fuel delivery diagnostics are covered here in full, together with the wiring diagrams, torque values and specifications those repairs call for.