2003 Chevy 1500HD Reliability

[Alex Boddy]

I'm trying to get my first truck and I found a 2003 Chevy 1500HD with the 6.0 Vortec and 4L80E. The truck has 168k miles and they are asking 9k, it seems to be in decent shape, so what kind of problems and reliability would be able to I expect from it? I've heard horror stories about the 4l60e so I'm trying to stay away from those. 

Edited March 8, 2024 by Alex Boddy

[CamGTP]

The 6.0 and 4L80e are fairly bullet proof combo's. The 6.0's can have oil leaks and broken exhaust manifold bolts are super common, so make sure all the bolts are there. Usually the heads break off and cause an exhaust leak.

 

Just think of a 1500HD as a 2500 truck, it's all heavy duty parts and heavy duty pricing on stuff. Parts are costs a little more and tires cost a lot more because they are LT rated. Also the 1500HD's get terrible fuel mileage. You will likely avg only 10-13mpg at most. It might get 15mpg on the freeway if it doesn't have 4.10 gears and you drive it nice.

[richard wysong]

$9k seems like a lot for a 20 year old truck. i paid $2600 for my 04 2500 hd 2 years ago with about the same mileage. Other than repairing the gauges in the instrument panel I have had 0 problems so far but I am getting some vibration from the rear diff now so time to do the bearings more than likely. My rocker panels are getting soft on the back side and frame rot can be a problem if you live where they salt the roads so pay a local garage to put it up on the lift and do a pre-purchase inspection. Welcome to the Forum!

[CamGTP]

A real clean body GMT-800 in Minnesota can cost a few extra bucks for sure. I wouldn't be too bent out of shape paying a little more for one.

 

I say that because yes I could fly south to buy a rust free truck that might be cheaper than one bought in my home state but it does cost money to do that. The cost of the flight, food, gas and stuff to get back can eat at the savings on the truck.