OK...I've had enough of trying to figure this out. Ever since the new new trucks came out that are actually designated "HD", either the aftermarket is confused, or I've failed to pull my head out all this time.
As far as I know, my truck is a 2500HD. Does anyone know if that means anything for a '99 or not?? I was under the assumption a 3/4 ton of that year could be either. Trying to narrow down products in the aftermarket has been a nightmare. I've called several of them to ask what they mean, and I get different answers. Some say '99's are either 2500 or 3500 etc etc., and there is no such thing as Heavy Duty versions. They used to do it. What, they decided to stop for 2 years and just make 3 versions of trucks? Bull.
I contacted GM and got the typical "We here at customer service are unqualified to answer...blah blah." Lick me! They said go to my dealer and ask. OK, I'm going to go in and politely ask if they could decipher a jumble of codes in my glove box and cross reference that with some sort of company product spec sheet. I'd feel just as stupid as them when they gave me the deer-in-the-headlight look like I must be kidding.
Anyone have any insight into this ridiculous question? I know I should know my truck, but most of them don't, so I don't feel so bad yet.
Here's a couple clues I have found:
<font color=blue>The warranty booklet that came with my truck actually seperates emission system warranty into light/medium/and heavy duty. The fancy warning sticker under my hood indicates the vehicle is equipped to comply with both heavy and medium duty emissions laws.
It actually says 2500 HD on my window sticker I still have.</font color=blue>
Here's a list of additional upgrades I special ordered from the factory which I feel may or may not change the classification of the truck:
<font color=green>I went with the 6.0L instead of the standard 5.3L
Locking diff's (limited slip really)
4x4 manual T-case
engine oil cooler
engine block heater
high flow air intake
manual 5-speed with "granny" gear
8600 GVWR (yes, you can order a weight rating...next biggest one was 10K, but you had to go 1 ton at that point)
I didn't necessarily order this, but it's an 8 lug (can't remember if that was because it's 4x4 or something else)</font color=green>
My Haynes is no help either. It actually says it covers the '99-'00 1500 and 2500, but NOT the Heavy Duty models. See my dilemma?
Anyway, I would appreciate any help. It IS a weird question [img]/wwwthreads_images/icons/crazy.gif[/img], so at least some of you will get a laugh tonight.