Afternoon Delight: How to Upgrade a 2012 GMC Sierra in an Afternoon (and for Under a Grand)!
The GMC Sierra is a great truck to grab on the cheap. There were a lot of engine options for the 2012 year, like the 4.3L Vortec V6, and V8s in 5.3L and 6.2L. One of the great features of the 2012 model year is that it’s towards the end of the generation, so engineers have
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