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Differential VIN codes
#1
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Differential VIN codes
I am trying to determine which differential is in my 2007 2500HD. This is a 2wd (I really think it is a one wheel drive). Local Chevy dealer says it is a limited slip but I am sure it isn"t. VIN is 1GCHC29697EXXXXXX.
#2
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Look in the glove box. There should be a list of RPO codes. Prolly start with a G. Mine is GT5 for 4.10s. G80 would mean you have posi.
I used to be able light up both rear tires on my 07 2500HD, it's getting more and more difficult to do on pavement.
I used to be able light up both rear tires on my 07 2500HD, it's getting more and more difficult to do on pavement.
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I've checked the codes in the glove box. There is a "GMC" & "GT4." The ratio is 3:73 (all diesels have this ratio). With 430hp, it will lite up "one" tire forever. I am guessing that the "GT4" is the actual rear end. It is a 14 bolt unit.
#4
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14bolt is the actual rearend, GT4 is just the gears it happens to have. I can light up one wheel all day, I used to be able to light up both forever. Wish I had me a Dmax.
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Is there anyway to determine (using the build codes) if this is a limited slip or one wheel drive unit? I know what the bolt pattern is (14 bolt) and the ratio. If the unit is supposed to be a limited slip and is not functioning properly, I can have Chevy replace it. If it is actually built as a one wheel drive, I am going to have to replace the guts with an after market posi (I'm getting tired of getting stuck on wet grass).
Update: I've found the information. All RPO codes are listed at "www.rpocodes.com".
Many thanks for all the help. According to my build codes, I do not have a limited slip. I guess its time to buy the after market kit. Thanks again - Smitty
Update: I've found the information. All RPO codes are listed at "www.rpocodes.com".
Many thanks for all the help. According to my build codes, I do not have a limited slip. I guess its time to buy the after market kit. Thanks again - Smitty
Last edited by smitty65534; April 26th, 2010 at 8:32 PM. Reason: update
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