2007 GMC Sierra Denali Questions

All 2007 GMC Sierra Denali Questions

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Not sure which Denali I have Just says Denali on door. But I bought it used a month ago love it so far, But experienced a problem just before Christmas with auto lights, put vehicle in drive and head lights did not co...
it is real loud, dealer can not seem to repair
So I have had this truck 1 yr now and recently the tranny feels like it is staring to hit gears harder. Especially when slowing to a red light but then accelerating as it turns green, it down shifts then feels like it...