I am writing to formally escalate a serious and unresolved issue regarding my vehicle, and the lack of meaningful action taken by both General Motors (GM) and an authorized dealership Blade Chevrolet. My case is not isolated, it mirrors the experience of thousands of other GM customers facing the same known mechanical defect, as widely documented in online forums and communities.
On February 25, 2025, I purchased a used 2023 GMC Sierra 3500 Denali with approximately 25,000 miles from a dealership. The vehicle included the original factory warranty, and I also purchased an extended warranty for additional coverage.
On April 25, 2025, at approximately 26,000 miles, the truck unexpectedly entered limp mode and the check engine light came on while I was driving with my children causing me to almost get rear ended. Please note—this truck is equipped with the Allison Transmission, which is marketed as one of the most reliable transmissions available.
I immediately took the vehicle to Blade Chevrolet in Mount Vernon WA, the nearest dealership, where it remained for nearly a week before a diagnostic was completed. I was informed by the lead mechanic, Jason Visten, that the issue was a failed valve body solenoid #1—a component he clearly identified as a known and widespread issue within GM’s system.
Mr. Visten further stated that GM has not been responsive to the dealership's requests for this part, which is currently on national backorder with no estimated timeline for availability. I was even told this specific part is being built for new vehicle production and are being prioritized over parts needed for warranty repairs, leaving my truck unusable and indefinitely sidelined for up to a year per Jason Visten @ Blade Chevrolet.
I contacted GM Customer Service directly and received the same generic response: no solution, no repair timeline, and no accountability. I made the following reasonable requests:
• That GM cover my $880 monthly truck payment,
• That GM provide a comparable replacement rental truck, or
• That GM offer a new replacement vehicle that matches the current truck I own.
All of these requests were either denied or dismissed without alternative solutions. I am now left with a non-functioning vehicle—still under warranty—for which I must continue to make loan payments and maintain insurance, while it sits unused and depreciating on the dealership lot.
This situation is not only frustrating—it is unacceptable. I purchased this truck based on its advertised quality and reliability, with the expectation that the warranty would be honored in the event of a manufacturer defect. Instead, I have encountered a complete lack of transparency, responsibility, or customer support from both General Motors and its authorized dealership Blade Chevrolet.
I am formally requesting that the Washington State Attorney General’s Office investigate this matter as part of a broader issue involving unfair business practices, failure to honor warranty obligations, and deceptive marketing by GM. I also request assistance in compelling GM to provide a timely repair or suitable alternative resolution.
3 Months in and still no answers or timelines!
