I have my 2023 Sierra AT4 only a few months. I have the diesel engine. So far, pleased with the truck and the fuel mileage. Just found this forum and joining in. I do have a question about the transmission but will post separately.
New to forum
- Thread starter 23OnyxAT4
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FLBeachyAT4
New member
Pics or you secretly drive a Ford EcoBoost.
adeerchaser
Well-known member
Welcome
Duramaximus
Well-known member
Welcome!!
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