2008 Chevrolet Colorado Service and Repair Manual

This factory service and repair manual for the 2008 Chevrolet Colorado sets out service data for two naturally aspirated engines, the 2.9L DOHC inline-four of 178 cubic inches and the 3.7L DOHC inline-five of 223, across three cab styles and the Base, LS, LT and WT trims. A pickup bought for work tends to be repaired rather than replaced, and this is the reference that supports that: torque sequences, clearances, wiring diagrams and diagnostic trees for the truck as it left the plant.

Engines covered

• 2.9L inline-four (178 cu in) — DOHC, naturally aspirated, gasoline
• 3.7L inline-five (223 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

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

Trims covered

• Base
• LS
• LT
• WT

Known issues on the 2008 Colorado. Two recalls appear on the federal record for this model year. In one, the brake lamp switch can fail in either direction, all stop lamps dark or all of them lit continuously, so the truck gives no dependable signal to the driver behind it. In the other, cabs built without a rear seat have a front center seating position that does not meet the federal child restraint requirement. Owners have logged 81 complaints, 24 on the electrical system, ten on service brakes and seven on air bags. Brake, lighting and restraint diagnostics are all documented here.