The system is designed to illuminate the tire pressure warning light when the pressure in a tire is 25% below the recommended cold tire pressure. On the recalled SUVs, the warning light won’t illuminate until the tire pressure is more than 25% below the recommended cold tire pressure. An underflated tire can cause tire overloading and overheating, leading to a blowout and possible crash. Underinflated tires also can result in premature or irregular wear, poor handling and poor fuel economy.
The recall is expected to begin this month. GM dealers will update the body control module free of charge. For more info, affected owners can call Chevrolet at 800-630-2438, GMC at 866-996-9463 or NHTSA’s safety hotline at 888-327-4236.