There's an '04 GMC Sierra 2500HD LB7 ZF6 for sale about 65 miles from here. It's for sale by a small used car dealer, and has 118,000 miles on it.

VIN is 1GTHK291X4E113399

I took a trip yesterday to see the truck, and overall had a good feeling about it. The dealer was traveling in AZ, and would up driving this back to PA. There is zero rust, has brand new batteries and tires, runs very smooth and I really enjoyed the hand shaker, which I would call a pivotal reason for looking at this particular truck. Not knocking the Allison in any way, I just prefer a manual...

I would have taken the Sierra home yesterday, but I'm hung up on the LB7. The warranty period for the fuel injectors is almost up, and this dealer doesn't know the truck's service history. Could someone help me out here?