Hi,

Im driving 300 miles tomorrow to maybe bye a 2004 silverado 2500HD worktruck.

Can anyone tell me how to figure out what gears are in the rear end??
the vin is 1GCHC29U34E146395

 

It either has 3:73's or 4:10's. I would be willing to bet on the 3:73's though just because it is a work truck

 

Ae7 - 40/20/40 split bench seat with front leather seating surfaces
am7 - folding rear seat
b3p - bailment commercial vehicle
b71 - wheel flares
cj3 - air cond., dual zone manual
c6w - gvw rating - 9,200 lbs
df2 - osrv extendable camper style mirrors
eva - evap emission requirement
e63 - fleetside body
fe9 - 50-state emissions
ft2 - arm tors bar spring adj
ft3 - arm tors bar spring adj
gmc - assembly plant-pontiac east
gt5 - rear axle - 4.10 ratio
hvy - iden 2 inch body raise,hd model
jh6 - 4 wheel power disc brakes, hd
kc4 - engine oil cooling system
knp - hd aux trans. Cooling sys
kup - throttle control electronic
k68 - 105 amp alternator
lq4 - vortec 6000 v8 sfi gas engine
mt1 - hd 4-spd automatic transmission
na4 - heavy duty emissions
nt9 - emission system federal tier 2 phase out
qiz - lt245/75r16/e als bw tires
r9z - poms expedite-sold orders
slm - stock orders
um7 - am/fm stereo w/4 speakers
uq5 - ext range sound frt & rr spkrs
vg3 - chrome front bumper
vxs - complete vehicle label
v43 - painted rear step bumper
v73 - statement of vehicle cert.-u.s. /canada
xhh - lt245/75r16/e als bw tires-frnt
x88 - chevrolet conversion
yd3 - base equip for sch gvw pl-ft ax
yd6 - base rear spring
yhh - lt245/75r16/e als bw tires-rear
zhh - lt245/75r16/e als bw spare tire
zy1 - solid paint
z85 - heavy duty suspension
1sw - work truck package includes: * air cond, dual zone manual * 40/20/40 seating * am/fm stereo w/ 4 speakers
1sz - preferred equipment savings 50u - summit white 6gk - front spring 69i - dk pewter interior trim
69v - dark charcoal-vinyl
7gk - front spring

 

There's a sticker in the glove box with the letter designations from the last post on it. It could very possibly be 410s, because my 04 2500HD 4x4 came with them standard. But as a work truck, it may have different gears altogether. Especially if it's 2WD.

If all else fails, look at the tachometer at 65MPH:
@3000RPM---410 gears
@2500RPM---373 gears
@2000RPM---342 gears

Maybe I've just been lucky, But my 04-2500HD has always been a great truck.

 

what I posted is exactly what the truck was built with. The truck was built with a 4.1 ratio

 

shawnvw where did you find that information?? I'd like to figure that out. The only other way I knew of was to look at the codes in the glove box and look em up in a code book

 

Big Brother is watching... I used to know how to break down the VIN, but this is pretty impressive spitting out all that info from the VIN! ATOSG: "It's know who you know...but who knows you"!

Success,

 

I have access to gm's vehicle inquiry system. Its what the service advisors, and mechanic's use to find info like the date the car was sold, any open campaigns or recalls, what the car was built with, and any warranty work that has been performed on the car

 

Well I wish I had that... ALOT. I guess that makes you a very valuable asset to this here site now don't it/

 

Yeah, Shawn,
I didn't know you could do that. That actually is pretty cool. What's more, I don't know how much they're asking for it, but from the options listed,that truck looks like a pretty nice deal.