Chevy Silverado, Tahoe, and Suburban front-seat heater failures. A plastic high spot on the HVAC door causes binding and cold air.

GM has released a new Service Bulletin for the Chevy Equinox and GMC Terrain to address a potential issue impacting operation of the crossovers' transmission.

Since modern automatic transmissions are generally seamless, any noticeable symptoms are important warnings that should prompt an immediate diagnosis.

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There's something wrong with several General Motors crossovers, and the automaker seems unsure of how to fix the issue. Customers have been complaining of a "Service All Wheel Drive" or "Service 4WD" ...