1983 GMC Option Codes

[67RS/SSx2]

Is there a place I can find option codes for a 1983 GMC? My 1983 Sierra Classic 2500 crew cab is now on its way to me and I'm trying to figure out exactly what I'm getting.

I have some paperwork from the original dealership (General GMC in Phoenix) that show its option codes. I have some questions. What I know is

G01010.....R. AXLE STANDARD
MX1020.....3-SPD AUTO TRAN
ZY4020.....DLX2 TONE PAINT
21L050.....21 BLUE 29 BLUE

Now my questions.
1) Is this rear axle a 3.73? Elsewhere I have paperwork with a hand-written "3.73". This truck has the 5.7L engine.
2) Is this the TH350 or TH400 transmission?
3) The truck is now a single color (or at least appears to be so). What would this 2 tone paint scheme look like?
4) What blues are these (example pics would be great).

Can't wait for this thing to get here.

Only down side is now I have to sell my 72 C10 Cheyenne Super.

Oh yeah, !

[Keith Seymore]

Here is the generic info packet from the GM Heritage Center archives for an '83 Chevy pickup. It will be the same as for a GMC (a GMC is simply a Chevy with RPO Z88 nameplate conversion).

This will give you an overview of all the availalbe options and a brief description, including the paint scheme. Note that the actual option code is the first three characters you have listed (ie, MX1, GQ1 - it's a "Q", not a "O", ZY4, etc). The following digits are just placeholders/junk.

You will find a powertrain chart (page 15) to help you determine what your base axle ratio is/was. For a C20943 model with the 5.7L engine the base axle is, in fact, a 3.73. MX1 indicates a non overdrive automatic which (I assume) is a TH400 in this case. You'll be able to tell visually pretty easily once the truck gets to you.

K

http://www.gmheritagecenter.com/docs...olet-Truck.pdf

[67RS/SSx2]

Wow, thanks so much Keith! That is a fantastic resource.

I printed it out, three-hole punched it, and put it in a 1" three-ring binder. I am studying it page by page and I am about half way through.

I went to the GM heritage site from one of your other posts but when I tried to open the 1983 chevy truck file all I could get was a blank page. However, your link worked great.

By the time my crew cab arrives I will know all of the details about it. Thanks again!

[520CheyenneK10]

Originally Posted by Keith Seymore

Here is the generic info packet from the GM Heritage Center archives for an '83 Chevy pickup. It will be the same as for a GMC (a GMC is simply a Chevy with RPO Z88 nameplate conversion).

This will give you an overview of all the availalbe options and a brief description, including the paint scheme. Note that the actual option code is the first three characters you have listed (ie, MX1, GQ1 - it's a "Q", not a "O", ZY4, etc). The following digits are just placeholders/junk.

You will find a powertrain chart (page 15) to help you determine what your base axle ratio is/was. For a C20943 model with the 5.7L engine the base axle is, in fact, a 3.73. MX1 indicates a non overdrive automatic which (I assume) is a TH400 in this case. You'll be able to tell visually pretty easily once the truck gets to you.

K

http://www.gmheritagecenter.com/docs...olet-Truck.pdf

Keith is there any general packets for my 1973 Cheyenne Super K10. I found nothing on the GM Heritage site. Do you know of any other resources for an older non-17 digit VIN? Thanks Much!!

[Keith Seymore]

Originally Posted by 520CheyenneK10

Keith is there any general packets for my 1973 Cheyenne Super K10. I found nothing on the GM Heritage site. Do you know of any other resources for an older non-17 digit VIN? Thanks Much!!

Should be right here:

http://www.gmheritagecenter.com/docs...olet-Truck.pdf

You just go to the Heritage Center site http://www.gmheritagecenter.com/gm-h...ive/index.html and click on "Vehicle Information Kits". That will take you to a menu that lists all the GM (Chevy) models. Click on Chevrolet Trucks and it will expand to show all of the available model years.

Also - here is the VIN card for the'73 models (trucks are on page 2). We used to carry a laminated version of these around in our shirt pockets while building the trucks.

http://service.gm.com/dealerworld/vi.../vincard73.pdf

K

[Keith Seymore]

Originally Posted by 67RS/SSx2

Wow, thanks so much Keith! That is a fantastic resource.

I printed it out, three-hole punched it, and put it in a 1" three-ring binder. I am studying it page by page and I am about half way through.

You are welcome. Your response is precisely what I hope for when I link this stuff.

K

[520CheyenneK10]

Originally Posted by Keith Seymore

Should be right here:

http://www.gmheritagecenter.com/docs...olet-Truck.pdf

You just go to the Heritage Center site http://www.gmheritagecenter.com/gm-h...ive/index.html and click on "Vehicle Information Kits". That will take you to a menu that lists all the GM (Chevy) models. Click on Chevrolet Trucks and it will expand to show all of the available model years.

Also - here is the VIN card for the'73 models (trucks are on page 2). We used to carry a laminated version of these around in our shirt pockets while building the trucks.

http://service.gm.com/dealerworld/vi.../vincard73.pdf

K

Hey thanks a million Keith!!! Only thing looks like not available for my year is the "Vehicle Invoice" wich would be nice to see but oh well can't have everthing. Thanks again for your help!!!