which rear end do i have??

[Steve W.]

GT5 -- 4.10 gears
--
Pacifism - The theory that if they'd fed
Jeffrey Dahmer enough human flesh,
he'd have become a vegan.

GT5 in mine, along with the G80.

My 2003 has a 3.73 posi rear end and the code in the glovebox is GT4. I
also had a 2000 with a 3.42 posi rear and the 3.42 gears were standard

that

year for an LS, standard cab, short bed with a 4.8 V-8.
Good luck,
Karl

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[Howard McCollister]

A complete list of all GM RPO codes can be found at http://tinyurl.com/eycv

GT4
Axle Rear 3.73 Ratio

GT5
Axle Rear 4.10 Ratio (DUP With GT8)

GU4
Axle Rear 3.08 Ratio

G65
Level Control Manual, Self-Adjusting

G69
Level Control Auto, Air, HD

G80
Axle Positraction Limited Slip




HMc

[leopold]

thanks for info and the link, kind of was hoping i had the 3.73 axle ratio.
may be a long shot but would anyone know the difference in fuel economy
between the two axle ratio's.

Post by Howard McCollister
A complete list of all GM RPO codes can be found at

http://tinyurl.com/eycv

Post by Howard McCollister
GT4
Axle Rear 3.73 Ratio
GT5
Axle Rear 4.10 Ratio (DUP With GT8)
GU4
Axle Rear 3.08 Ratio
G65
Level Control Manual, Self-Adjusting
G69
Level Control Auto, Air, HD
G80
Axle Positraction Limited Slip
HMc

[Mike Levy A+, N+, MCP]

Missed one, GU6 is 3.42. In the S-trucks anyway...

On 22 Jun 2003 09:26:40 -0500, "Howard McCollister"

Post by Howard McCollister
A complete list of all GM RPO codes can be found at http://tinyurl.com/eycv
GT4
Axle Rear 3.73 Ratio
GT5
Axle Rear 4.10 Ratio (DUP With GT8)
GU4
Axle Rear 3.08 Ratio
G65
Level Control Manual, Self-Adjusting
G69
Level Control Auto, Air, HD
G80
Axle Positraction Limited Slip
HMc

[Gary Glaenzer]

total

absolutely total, devastating destruction

yup

What is their failure mode?

"along with the G80"
you poor soul

Wonderful, yet another G(enerally) M(ediocre) component that eats its

young

on a regular basis?
VLJ

[99 Z71 owner]

Hi all,

I was checking out the post "which rear end do I have"

You guys have me curious now, I checked my VIN # and this website
http://tinyurl.com/eycv , couldn't find my rear end code in there, anyone
help me out?

GTE is the code I have in my VIN # K19 are the three #'s after GTE if that
helps


99 Z71 4X4

Thanks!

[Markedwardz]

With your valve stem straight down, make a chaulk mark on you r driveshaft.
Have someone drive truck straight ahead one tire rotation. Count number of
turns of driveshaft until the valve stem is straight down again. If mark has
gone around just over 4 times, it's a 4.10. Three and three quarters turns,
it's a 3.73. Just under3 and one half turns, a 3.42. Just over 3 turns, a
3.08. Quicker than tryin to cipher a code!