They are not related. HD stands for "Heavy Duty." LT is just a trim level, it doesn't hardly mean anything. For example, you could have an HD that is also an LT. the hds have a 6.0. if you have a 1500 lt that is not an hd, more than likely it doesnt.HD represents a capability rating; mostly on 2500's and 3500's. Some 1500's do have an HD rating, but it is rare. I never understood why General Motors made the 1500HD. It seems kind of pointless when you can just get a 2500 series.
"The Chevy Silverado SS and HD have mechanical difference. Carfax is a good resource for looking up car information. You will be able to look up the Chevy Silverado SS and HD and determine how it performs, what are new and used prices, and ultimately determine if it is right for you."
Yes they are interchangeable.
The HD has a heavier suspension
Tim Allen does the Chevy Silverado HD commercial, but Dylan Bruno does other Chevy commercials (Cruze, Silverado).
heavy duty
need to find out how to replace a power brake booster in a 2002 Chevy silverado 2500 HD
How do you un lock a raido on a 2003 chevy silverado
¾-ton
What size of oil filter do i need for a 2004 Chevrolet 2500 HD silverado
A pick up truck made by Chevrolet.
340,000 miles 90% highway
It may have an extra leaf spring on the rear, and over loads on it and that is about it.