The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 2001 Chevrolet silverado 2500, 6.0, 4x4 Short Bed

**hatzie** · 04-18-2023, 08:52 AM

G80 is positrac or locker depending on the model year.
Your gear ratio you're looking for something like GT4.

There are several sites that claim to be able to decode the RPO codes.

If you take a picture of your SPID and post it we can probably answer most questions about options on the truck. If you're worried about posting the VIN just put a piece of tape over the VIN number or edit the VIN number out of the picture.

If you want a full options list for the truck you can probably get one by politely asking the parts guys at your local GM dealer using the VIN.

GM social media used to provide an options list in PDF form by emailing them. Look at my build thread in the builds sub-forum. I think I posted the email address there. There's a link to it right in my signature.

04-18-2023, 08:52 AM	#11
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,916	Re: 2001 Chevrolet silverado 2500, 6.0, 4x4 Short Bed G80 is positrac or locker depending on the model year. Your gear ratio you're looking for something like GT4. There are several sites that claim to be able to decode the RPO codes. If you take a picture of your SPID and post it we can probably answer most questions about options on the truck. If you're worried about posting the VIN just put a piece of tape over the VIN number or edit the VIN number out of the picture. If you want a full options list for the truck you can probably get one by politely asking the parts guys at your local GM dealer using the VIN. GM social media used to provide an options list in PDF form by emailing them. Look at my build thread in the builds sub-forum. I think I posted the email address there. There's a link to it right in my signature. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 04-18-2023 at 08:58 AM.