2015 Buick Regal Service and Repair Manual

This factory service and repair manual for the 2015 Buick Regal addresses three engines, and they are inline-fours with double overhead cams. The 2.0L is turbocharged and runs on gasoline; one 2.4L is naturally aspirated and flex-fuel; the other 2.4L is a mild hybrid on gasoline. Base, GS and Premium trims share the four-door sedan body. The manual carries procedures, specifications and torque values for the engine, fuel and cooling systems, plus diagnostics and wiring diagrams for the electrical system and the mild hybrid hardware.

Engines covered

• 2.0L inline-four (122 cu in) — DOHC, turbocharged, gasoline
• 2.4L inline-four (145 cu in) — DOHC, naturally aspirated, flex-fuel
• 2.4L inline-four mild hybrid (145 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base
• GS
• Premium

Known issues on the 2015 Regal. Owners have filed 33 complaints about the 2015 Regal with NHTSA. The engine draws the most, 9, followed by exterior lighting with 8, the electrical system with 5, the fuel and propulsion system with 4 and air bags with 3. One complaint reported a crash, 1 a fire and 2 an injury. The manual's diagnostics, wiring diagrams and procedures for the engine, fuel system and electrical system bear on where those complaints cluster, and its specifications and torque values extend to the transmission, brakes and suspension.