Originally Posted by Gulfcoast
I'm real truck poor (too many) but I recently bought a 2001 Chevy Z71 4x4 fishing truck. It's a high-mileage truck with 240k, but it sure runs and drives good.

I had about everything checked out and the mechanic couldn't find anything it needed, except brake pads which I will do myself.

My question is how reliable are the 5.3 motors in a 2001? Looks like I lucked out and got one before the 4-cyl shutoff (AFM) deal began in 2003.

At 240k should I begin motor shopping? What's the average cost?

Thanks



I don’t know where you got your info but the AFM didn’t start until the new body style 2007 trucks.
Those 5.3s are very reliable. I would be more concerned about the transmission than the motor at 240k if it’s in as good a condition as you say.

Last edited by chevydude2015; 08/08/19 11:24 PM.