Option: (AT), 6.6L, 4x4
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This used 2019 GMC Sierra 2500 6.6L transmission is a grade A replacement from a donor GMC Sierra 2500 built for 2019, with about 44,432 - 51,097 mi on the donor vehicle. The listed option is (AT), 6.6L, 4x4. Use that 6.6L size and the option code with the VIN so the transmission matches the sensors, wiring, and computer in the vehicle. This unit is priced at $3,948 and is offered in stock for shipping. State Auto Parts inspects used GMC Sierra 2500 transmissions and grades each one before it is listed. Free shipping is available to commercial addresses in the lower 48 states, and residential delivery can be arranged.
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State Auto Parts kept me updated the whole way and the refurbished engine arrived spotless. Bolted right in and the warranty registration was painless.
Good quality part with excellent customer support. The only reason I'm giving 4 stars instead of 5 is the delivery took a day longer than expected, but the quality makes up for it.
Part arrived on time but had more cosmetic wear than the listing photos showed. Support offered a small credit, yet better documentation would have saved some surprises.
