LBZ: Requesting advice on buying first diesel


New member
Mar 27, 2020
Hello all,

I live in Alabama, and I am thinking about buying my first diesel truck. I’ve always wanted one and a dealer friend of mine is selling a 2006 GMC 2500 with the LBZ motor. It has 434k miles and a new engine was supposedly put in it at 300k miles. All of the work was done at the Chevy dealership, but it has since closed so I can’t get the paperwork on the motor. The truck is in pretty good shape for being a work truck and having so many miles. The transmission is also leaking, but I took it to a shop for an estimate and they said it was just the pan leaking. I can buy it for $6,300, and I wanted to see what you all thought about the purchase. Thank you all in advance for any advice on this.

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Well-known member
Dec 15, 2010
If you are happy with it's condition and it runs good. Why not

If possible, can you do a compression check on the cylinders before purchasing?


Well-known member
Jun 23, 2009
TX of course
I would take it to a diesel shop that knows Dmaxs if possible. They have their issues that are costly to repair, but for $6300 you could put some money into it. The only thing bad about buying a high mileage truck is trying to sell it, but if you don’t mind the miles and plan on keeping it a while that’s not an issue.

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