Vin
Well-known member
My old 2003 GMC 6.0L with a 4 speed Auto was a gas guzzling dog but BY FAR the most reliable powertrain that I ever owned. Old japanese-made Toyotas included.Nice truck... i think your going to find the 5.3L engine a bit of dog, it is the worst engine in the GMC lineup. the baby duramax is my fav of GMC, and if i was not paying the gas bill the 6.2L
Sponsored