2015 Buick LaCrosse Service and Repair Manual

This factory service and repair manual for the 2015 Buick LaCrosse applies to a four-door sedan in Base, Leather and Premium trim. Its 3.6L V6 is a flex-fuel engine with double overhead camshafts, while the 2.4L inline-four, also double-overhead-cam, is a mild hybrid burning gasoline; both are naturally aspirated. The manual supplies wiring diagrams and diagnostics for the electrical system and air bags, and procedures, specifications and torque values for the engines, the mild hybrid system, the fuel, cooling and transmission systems, brakes, suspension and steering.

Engines covered

• 2.4L inline-four mild hybrid (145 cu in) — DOHC, naturally aspirated, gasoline
• 3.6L V6 (217 cu in) — DOHC, naturally aspirated, flex-fuel

Body styles covered

• 4-door sedan

Trims covered

• Base
• Leather
• Premium

Known issues on the 2015 LaCrosse. Air bags account for the 2015 LaCrosse's 3 recalls. One reached 395 certain 2015 LaCrosse vehicles whose front seat-mounted side air bags had inflators that could rupture on deployment, throwing metal fragments at occupants or leaving the bag underinflated; dealers replaced the side air bag modules. The rest concerned air bag sensing module software on certain 2015 LaCrosse vehicles that could start a diagnostic test while driving and, for its duration, keep the front air bags and belt pretensioners from deploying, fixed with a software reflash. Of 44 complaints, steering accounts for 12 and air bags for 7; 5 complaints reported a crash and 3 an injury. Air bag wiring diagrams and diagnostics apply.