General Motors is recalling Chevrolet, Cadillac, Buick and GMC vehicles over an issue with the brake system that could increase the risk of a crash.
The defect: affected models are equipped with rear brake caliper pistons that may have an insufficient coating, causing gas pockets to form, potentially reducing rear brake performance (creating a soft or spongy feel when the driver depresses the brake pedal).
According to GM, the manufacturer of the brake pistons failed to properly chrome and temper the brake pistons during the manufacturing process. The condition can cause hydrogen gas to remain trapped in the piston body.
The hazards: a reduction in braking performance can increase the risk of a crash. GM said it is not aware of any crashes caused by the issue.
Affected components: brakes.
Affected vehicles: 2018-2019 model year:
- Buick LaCrosse
- Cadillac XTS
- GMC Terrain
- Chevrolet Bolt EV
- Chevrolet Cruze
- Chevrolet Equinox
- Chevrolet Impala
- Chevrolet Malibu
- Chevrolet Volt
Number of vehicles affected: 230,000, with:
- 210,628 vehicles in the U.S.
- 19,385 vehicles in Canada
The fix: GM dealers will bleed the rear brakes as necessary to remove any gas.
Owners should: customers looking to find out if their vehicle is included in this GM recall should visit recalls.gm.com. There, owners will be able to enter their Vehicle Identification Number (VIN) to see any open recalls as well as customer satisfaction programs. If the vehicle is part of the recall, then owners should take it to a dealer.
Owners can also contact GM customer service with questions by using the following information.
- Chevrolet Customer Service: 1-800-222-1020
- Cadillac Customer Service: 1-800-458-8006
- Buick Customer Service: 1-800-521-7300
- GMC Customer Service: 1-800-462-8782
- GM Recall Number: 18279
- NHTSA Toll Free: 1-888-327-4236
- NHTSA (TTY): 1-800-424-9153
- NHTSA Website: www.safecar.gov
- NHTSA Recall Number: 18V576000
GM’s report for the recall stated that ZF Group, the supplier of the brakes, was investigating similar reports for its brake calipers from other automakers, including Audi, Volkswagen and BMW. However, ZF did not notify GM until June 14th.
The GM recall document also stated that ZF’s July safety defect report did not list GM as a buyer of the affected brake calipers.