I have a 2007 Chevy 2500 Classic Diesel Automatic. The Classic you list is a 1500 half ton

Question

2007 Chevy Silverado 2500 Classic LT, Diesel LBZ engine, Allison auto transmission, 4WD. (exact same truck as 2006 Chevy 2500.

What you list as Classic is a 1500 1/2 ton.

Where are all the early say 2000 thru 2007 Chevy 2500's? Diesel, Auto. They made millions of these and they are all mostly on the road yet.

Answer 1

Just did one of these. As far as the antitheft bypass is concerned, there is no difference between the 1500 and 2500. If you look it up as a Sierra HD and select 2007 classic, it comes up with the same result. Use the 07 classic Silverado and you'll be good to go.