General Motors LLC (GM) is recalling certain model year 2013-2015 Cadillac XTS vehicles manufactured February 14, 2012, to August 22, 2014, and 2014-2015 Chevrolet Impala vehicles manufactured November 5, 2012, to September 2, 2014. In the affected vehicles, the electronic parking brake piston actuation arm may not fully retract causing the brake pads to stay partially engaged.

Consequence: Brake pads that remain partially engaged with the rotors may cause excessive brake heat that may result in a fire.

Remedy: GM will notify owners, and dealers will update the electronic parking brake software, free of charge. The recall began on October 28, 2014. Owners may contact Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is 14471.

NHTSA campaign 14V541000

General Motors LLC (GM) is recalling certain model year 2013-2014 Cadillac XTS vehicles manufactured April 11, 2013, to June 27, 2013, and 2014 Chevrolet Impala vehicles manufactured May 13, 2013, to November 5, 2013. The affected vehicles may have left the factory with the sensing and diagnostic module (SDM) set to "manufacturing mode."

Consequence: In manufacturing mode, the vehicle's air bags will not deploy in the event of a crash, increasing the risk of occupant injury.

Remedy: GM will notify owners, and dealers are to reprogram the SDM to the correct mode, free of charge. The recall is expected to begin in September 2014. Owners may contact Cadillac customer service at 1-800-458-8006 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 14532.

NHTSA campaign 14V518000

General Motors LLC (GM) is recalling certain model year 2014 Buick Regal, Cadillac XTS, Chevrolet Camaro and Chevrolet Impala vehicles. Improperly torqued fasteners may cause the steering intermediate shaft and the steering gear and/or the lower control arm and the lower ball joint to separate.

Consequence: If any of the components separate, the vehicle may have a loss of steering, increasing the risk of a crash.

Remedy: GM began to notify owners on June 27, 2014, and dealers will inspect the fasteners for correct torque, correcting them as necessary, free of charge. Owners may contact GM customer service at 1-800-521-7300 (Buick), 1-800-458-8006 (Cadillac) or 1-800-222-1020 (Chevrolet). GM's number for this recall is 14378.

NHTSA campaign 14V409000

General Motors LLC (GM) is recalling certain model year 2013-2014 Cadillac XTS vehicles manufactured February 14, 2012, through March 7, 2014. In the affected vehicles, a cavity plug on the brake booster pump connector may dislodge allowing corrosion of the brake booster pump relay connector.

Consequence: The corrosion of the brake booster pump relay connector may cause a resistive short and melt the connector, increasing the risk of a fire.

Remedy: GM will notify owners, and dealers will apply sealant to the connector cavity plugs, re-route the vacuum pump vent hose and replace the front body wiring harnesses as needed, free of charge. The recall began on April 7, 2014. Owners may contact Cadillac at 1-866-982-2339. GM's number for this recall is 14062.

NHTSA campaign 14V116000