2019 GMC CANYON

POWER TRAIN

Formal Complaint to NHTSA: 2019 GMC Canyon Transmission Issue To Whom It May Concern at the National Highway Traffic Safety Administration (NHTSA): I am writing to formally report a recurring and dangerous transmission issue in my 2019 GMC Canyon, and to request that NHTSA open an investigation into why General Motors has not issued a safety recall — despite widespread complaints and technical service bulletins. My vehicle exhibits jerking, hesitation, slipping, and hard shifting — especially during acceleration or when moving from a complete stop. These symptoms are consistent with hundreds of other consumer reports across forums, NHTSA complaints, and class-action lawsuits tied to GM’s 8L45 8-speed automatic transmission. I was quoted approximately $5,700 for a transmission repair and $8,800 for replacement. This problem is not simply an inconvenience or comfort issue. Hesitation and sudden surges in acceleration pose a legitimate safety hazard, especially when merging onto highways, pulling into traffic, or driving on slippery roads. At times, I’ve experienced delayed throttle response and unexpected lurching — which could easily result in a rear-end collision or intersection mishap. Despite the well-documented nature of this defect, GM has not recalled these transmissions — and owners are left to bear the financial burden of expensive repairs on a known design flaw. That is unacceptable. NHTSA’s mandate is to protect consumers from safety-related defects. In my view, and in the experience of many other drivers, this transmission issue meets the criteria for a recall: - It affects safe operation and control of the vehicle - It has been confirmed by internal GM service documentation - It recurs even after manufacturer-prescribed remedies - It places drivers, passengers, and others at risk Please consider this a formal request to investigate this matter and hold General Motors accountable for a recall or reimbursement program for affected consumers. Joanne Holstein