determining chevy axle ratio
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From: Nowhere, SE OK
determining chevy axle ratio
the rear end in my dads 89 chevy just went out and we found another truck that we could get an axle from. it's a 97 chevy.
is there any way to determine the rear axle ratio besides jacking up the truck and counting the spins of the tires vs. the driveshaft? i got the VIN number off both trucks and looked for a way decode it on the internet, but I never found one that could tell me the axle ratio.
is there any way to determine the rear axle ratio besides jacking up the truck and counting the spins of the tires vs. the driveshaft? i got the VIN number off both trucks and looked for a way decode it on the internet, but I never found one that could tell me the axle ratio.
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From: Alvin, Texas.
Google!
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Posting Guru
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From: Nowhere, SE OK
http://gm-trucks.com/RPO_1998.shtml
is this what you meant to post?
since the oldest codes they have is 98, will it work for both the 97 and 89?
what would you use these for, the VIN number?
is this what you meant to post?
since the oldest codes they have is 98, will it work for both the 97 and 89?
what would you use these for, the VIN number?
Logistics Pro
Joined: Nov 2004
Posts: 4,562
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From: Southern MD
Originally Posted by Frost13
http://gm-trucks.com/RPO_1998.shtml
is this what you meant to post?
since the oldest codes they have is 98, will it work for both the 97 and 89?
what would you use these for, the VIN number?
is this what you meant to post?
since the oldest codes they have is 98, will it work for both the 97 and 89?
what would you use these for, the VIN number?
FTE Chapter Leader
Joined: May 2002
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From: Fraziers Bottom, WV
If no one has been in to the rear end before there should be a small tag on one of the bolts that hold the cover on. this tag will be about 1 inch long and ti will have the ratio.
As for the glove box tag I hope your has the code and ratio on it. My Chev.. only has a tag that has about 50, 6 digit numbers and the dealer can't tell me what they are!
If the truck can't be driven you can pull the cover off the rear end and look for the part number stamped on the ring gear. It will be on the out side in view when the carrier is turned. You can look up the GM number or in front of that number will be 2 two digit numbers like (42 11) If you divide this out it come to 3.818... or 3.83. In the case of a friends truck (I think it was 32 11) or 2.909 or 2.93.
As for the glove box tag I hope your has the code and ratio on it. My Chev.. only has a tag that has about 50, 6 digit numbers and the dealer can't tell me what they are!
If the truck can't be driven you can pull the cover off the rear end and look for the part number stamped on the ring gear. It will be on the out side in view when the carrier is turned. You can look up the GM number or in front of that number will be 2 two digit numbers like (42 11) If you divide this out it come to 3.818... or 3.83. In the case of a friends truck (I think it was 32 11) or 2.909 or 2.93.
Post Fiend
Joined: Feb 2004
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From: Damascus-Boring, Ore
The RPO codes in the glove box should be three digit, alpha-numeric. All axle codes start with the letter "G."" Paint codes start with numbers, two digits followed by a U or a L. Trim codes are also numeric, followed by a letter.
G80- Locking Diff
most common truck codes:
GU6-3.42
GT4-3.73
GT5- 4.10
G80- Locking Diff
most common truck codes:
GU6-3.42
GT4-3.73
GT5- 4.10
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Postmaster
Joined: May 2002
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From: Broken Arrow, OK
GM used to have separate stickers that told you what the options were in plain English. My 86 GMC had a sticker in the glove box that said "2.73 non-locking axle".
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Posting Guru
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From: Nowhere, SE OK
Originally Posted by polarbear
G80- Locking Diff
the 97 is a 3.42. don't know the 89's yet. gotta get all the codes.
