What do you think? Leave a respectful comment.

A Chevrolet Tahoe undergoes testing at the General Motors Assembly Plant in Arlington, Texas June 9, 2015. General Motors Co is raising the stakes on its bet that sales of fuel-thirsty sport utility vehicles will keep driving its global profits as Chinese and other markets sag. GM said on July 14, 2015 that it plans to spend $1.4 billion to modernize the factory in Arlington, Texas, that builds the Cadillac Escalade, Chevrolet Suburban and GMC Yukon sport utility vehicles. It's the largest single investment in a $5.4 billion, three-year plant upgrade program announced earlier this year. Picture taken June 9, 2015. REUTERS/Mike Stone

General Motors under investigation for faulty brake vacuum pumps on big pickups and SUVS

The U.S. government is investigating more than 100 complaints of poor brake performance on 2.7 million General Motors big pickups and SUVs.

The National Highway Traffic Safety Administration says a brake vacuum pump can deteriorate, causing increased braking effort and longer stopping distances.

The agency has 111 consumer complaints including nine crashes and two injuries.

The investigation covers 2014 through 2016 Chevrolet Silverado and GMC Sierra pickups. Also involved are Chevrolet Suburban and Tahoe, the GMC Yukon and Cadillac Escalade SUVs.

The agency will determine how often the problem happens and whether a recall is necessary.

GM is monitoring complaints and warranty claims about the brakes and is working with NHTSA to evaluate them, spokesman Tom Wilkinson said Friday.

Any owner who has a problem with brake performance should have them examined by a GM dealer or independent repair shop, Wilkinson said.

They should keep receipts because they could be reimbursed for repairs if there is a recall, he added.

The Latest