2019 Buick LaCrosse Service and Repair Manual

This factory service and repair manual for the 2019 Buick LaCrosse spans six trims on the four-door sedan: Base, Avenir, Essence, Preferred, Premium and Sport Touring. Two gasoline engines with double overhead cams are listed. The smaller, a 2.5L inline-four, is a mild hybrid; the larger is a 3.6L V6. Neither uses forced induction. Wiring diagrams and diagnostics address the electrical system and the mild hybrid system, while procedures, specifications and torque values address the engines, fuel and cooling, the transmission, brakes, suspension and steering.

Engines covered

• 2.5L inline-four mild hybrid (150 cu in) — DOHC, naturally aspirated, gasoline
• 3.6L V6 (222 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base
• Avenir
• Essence
• Preferred
• Premium
• Sport Touring

Known issues on the 2019 LaCrosse. Owners have logged 6 complaints on the 2019 LaCrosse: 3 on the engine, 1 on the electrical system and 1 on the fuel and propulsion system. The 2 recalls on record concern the transmission and the brakes. Certain 2019 LaCrosse vehicles could have bolts missing from the start-stop accumulator endcap, which risked a fluid leak, a loss of drive and, near an ignition source, a fire; the accumulator was replaced where bolts were absent. Certain 2019 LaCrosse vehicles were also recalled because the rear caliper pistons might have an inadequate coating that allows gas pockets to form and could reduce rear braking; dealers bled the brake system. Transmission and brake procedures apply.