Chevrolet Suburban, Silverado 1500 +1 more: Service brakes — vacuum

Affects Chevrolet Suburban, Silverado 1500, Tahoe · 2014–2018 — about 3.5M vehicles.

The hazard

As the vacuum level drops, the brake assist decreases, increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash.

What to do

GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began October 8, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192268490.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational