trim codes identification - The 1947 - Present Chevrolet & GMC Truck Message Board Network

79gmcc15 · 07-06-2009, 02:29 PM

here are some of the stuff on my option sheet. I was wondering if someone can expand/explain what this means more?

G80: Locking Diff. I know what that is just wanting more info on it.
B3W: Advanced Price Sheet
ZQ2: Operator Convenience Package
F44: Heavy Duty Chassis
74D Lrri Carmne Spec Cu
YE5 Demonstrator Identif

Thanks! Matt

79gmcc15 · 07-06-2009, 11:31 PM

Bump

USSkoval · 07-07-2009, 11:16 PM

G80 is the Gov-loc, AKA Gov-bomb. Will only lock at speeds of about 25mph or less, but will stay locked at speeds greater than that, until both wheels gain traction. It is failure prone.

F44 I believe is the Heavy Half option?

79gmcc15 · 07-08-2009, 03:51 AM

well that's pretty exciting about the g80. looks like I'll be taking an easy with this truck! I know that my truck is a "Trailering special".so that might have something to do with the f44.

USSkoval · 07-08-2009, 09:05 AM

Don't worry too much about taking it easy, as it doesn't seem to matter. They (G80) usually fail in one of two ways- just plain quit working, or they grenade.

79gmcc15 · 07-11-2009, 01:04 AM

anyone got a web site I can use to look these up at?

sierra4x4 · 07-11-2009, 01:39 AM

Here is a site to look up RPO codes.http://www.c2e.info/rpocodes/

USSkoval · 07-11-2009, 09:21 AM

Only ZQ2 and F44 were listed, which stated about the same thing. I was starting to think that that listing was only for vehicles built within the last 20 years or so. Then I noticed "YE7- Special Performance Package, '71-'72 GMC Sprint", so I guess that's not the case, lol.

79gmcc15 · 07-11-2009, 05:34 PM

lol yeah. I did noticed that it just told what was basicly on my build sheet. but I would really like to know what a Advanced Price Sheet,Lrri Carmne Spec Cu,Demonstrator Identif, all mean. maybe Keith might know

Benelli · 07-11-2009, 11:27 PM

Where do you find this at in your truck?

79gmcc15 · 07-11-2009, 11:46 PM

Quote:

Originally Posted by Benelli

Where do you find this at in your truck?

if you open your glove box there should be a option sheet there with all the codes and a short line about what it is called.

USSkoval · 07-12-2009, 01:19 AM

I came across something else. ZQ2 is simply an option that covers both the power windows AND locks. So basically it's a package that only includes two options.

79gmcc15 · 07-12-2009, 01:38 AM

Quote:

Originally Posted by USSkoval

I came across something else. ZQ2 is simply an option that covers both the power windows AND locks. So basically it's a package that only includes two options.

oh, cool! that makes sense.

68 TT · 07-12-2009, 09:22 AM

G80 is not specific to Gov-Bomb posi carriers. It is a generic option code that has been used by GM for decades to designate a limited slip differential. My 68 Camaro has this option code with its clutch type Eaton built posi carrier in the 12-bolt.

It depends upon which vehicle you have and what year range as to what you have.

An easy way to tell if it is a Gov-Bomb without pulling the cover is to jack up the rear end and then rotate one tire. The other tire will not rotate in the same direction if it is an open carrier or a Gov-Bomb.

If the other tire rotates in the same direction as the one you are turning then you have a clutch type posi carrier.

GM didn't put the Gov-Bomb in cars so if you have one then a Camaro or Firebird from 72 to 81 can be a good donor for a clutch type posi to retrofit if you have the 8-1/2" 10-bolt rear end.

USSkoval · 07-12-2009, 10:00 AM

As far as I know, ALL 1/2ton GM trucks got the gov-bomb from '73-current, if equipped with G80. Can anyone confirm this? Also, apparently GM did put out some cars with the gov-bomb. I've been told that there were some '82-'84 F-bodies built with it.

68 TT · 07-13-2009, 11:06 AM

With the abuse cars with posi tend to get I wouldn't bet many Gov-Bomb posi's lasted long in Camaro's.

My 83 Z/28 was on its third rear end by the time it was ten years old when I bought it. I put two more in it over the next five years. The 3.73 gears and a five speed were really rough on the little 7-5/8" 10-bolt.

If only GM had been smart and put the 8-1/2" 10-bolt in the 82-2002 F-bodies instead of the tiny POS 7-5/8" 10-bolt we would have a great supply for clutch type posi carriers.

Keith Seymore · 07-13-2009, 11:33 AM

Quote:

Originally Posted by 79gmcc15

lol yeah. I did noticed that it just told what was basicly on my build sheet. but I would really like to know what a Advanced Price Sheet,Lrri Carmne Spec Cu,Demonstrator Identif, all mean. maybe Keith might know

Sorry for the delay; I kept forgetting to check my literature (which I keep in my office at work).

Unfortunately, both the written stuff and electronic records that I have don't give any more description than what you have written here. I'd only be guessing if I tried to answer now but I can ask around a bit.

K

Keith Seymore · 07-13-2009, 11:33 AM

Quote:

Originally Posted by USSkoval

I came across something else. ZQ2 is simply an option that covers both the power windows AND locks. So basically it's a package that only includes two options.

Yep - this is correct.

K

79gmcc15 · 07-13-2009, 01:48 PM

Quote:

Originally Posted by Keith Seymore

Sorry for the delay; I kept forgetting to check my literature (which I keep in my office at work).

Unfortunately, both the written stuff and electronic records that I have don't give any more description than what you have written here. I'd only be guessing if I tried to answer now but I can ask around a bit.

K

well Thank you Keith! Looks like it might be one of the GM mystery's! lol thanks for trying everyone!

Matt

**Captkaos** · 07-13-2009, 03:51 PM

Quote:

Originally Posted by USSkoval

As far as I know, ALL 1/2ton GM trucks got the gov-bomb from '73-current, if equipped with G80. Can anyone confirm this?

Incorrect, the 73-76 and some 77's had the Eaton in them. they were all 12bolts. as stated G80 is just a RPO designation for limited slip for all models.

I don't have my sheet here, but what more do you want to know about what was listed?

79gmcc15 · 07-13-2009, 04:35 PM

Quote:

Originally Posted by Captkaos

Incorrect, the 73-76 and some 77's had the Eaton in them. they were all 12bolts. as stated G80 is just a RPO designation for limited slip for all models.

I don't have my sheet here, but what more do you want to know about what was listed?

I am just looking for an explanation of what the "packages" mean. like one we found out means power door locks and windows.

if I went to a dealer in 79 and ordered my truck with this, what would I get:
B3W: Advanced Price Sheet
F44: Heavy Duty Chassis
74D Lrri Carmne Spec Cu
YE5 Demonstrator Identif

I can get a pic of my sheet if it will help.

I'll have to do that test on my rear to see if it is a gov loc or not.

Any light you can shed on this would be awesome!
Thank you! Matt

USSkoval · 07-13-2009, 06:40 PM

Quote:

Originally Posted by Captkaos

Incorrect, the 73-76 and some 77's had the Eaton in them. they were all 12bolts. as stated G80 is just a RPO designation for limited slip for all models.

Great to hear, I did not know that. Previously, when I said that G80 was the gov-bomb, I meant in this case, rather than all of them. Sorry for the confusion.

Keith Seymore · 07-14-2009, 12:19 PM

Quote:

Originally Posted by 79gmcc15

I am just looking for an explanation of what the "packages" mean. like one we found out means power door locks and windows.

if I went to a dealer in 79 and ordered my truck with this, what would I get:
B3W: Advanced Price Sheet
F44: Heavy Duty Chassis
74D Lrri Carmne Spec Cu
YE5 Demonstrator Identif

I can get a pic of my sheet if it will help.

I'll have to do that test on my rear to see if it is a gov loc or not.

Any light you can shed on this would be awesome!
Thank you! Matt

I sent an email to our current engineering specifications writer to see if she had any insights on these.

K

Keith Seymore · 07-14-2009, 01:11 PM

I got a note back; apparently we changed systems in the early nineties and the old (unused) information was not carried forward.

I can call the retired Specs guru at home if you would like to continue to pursue, or we can stop at this point. Let me know what you prefer.

Also - I should mention that RPO codes do get reused. For example, at one time the code LS6 was a fire breathing, top of the heap 1970 big block 454. That code is in use today as a small block engine RPO. FWIW -

K

[quote]

Keith -
There is a system (OCS) that has all the RPO/SEO codes. This is out on the WEB, I've included a screen shot, maybe you can look for yourself. We can inquire or request new ones.

In 1979 the information was in IMS (we use GPDS now). The switch was made in 1990 to GPDS and it appears no history was brought forward from IMS. This may be a dead end. If you truly need to talk with Russ there are folks in my group that have his home phone number.

B3W: Advanced Price Sheet RPO is now "TEST, water--delete"
F44: Heavy Duty Chassis still exists
74D Lrri Carmne Spec Cu RPO does not exist
YE5 Demonstrator Identif RPO is now convenience pkg, Deluxe Comfort & Decor Level 5

Elaine
[endquote]

79gmcc15 · 07-15-2009, 02:06 PM

well as I stand. I think the more info there is about the trucks the better. BUT I don't want to put you out too. it is more of a curiosity then anything else. if it is a hassle to call to you or him, or you don't want to. I completely understand. and I appreciate what you have done so far! Thank you! Matt

07-06-2009, 02:29 PM	#1
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	trim codes identification here are some of the stuff on my option sheet. I was wondering if someone can expand/explain what this means more? G80: Locking Diff. I know what that is just wanting more info on it. B3W: Advanced Price Sheet ZQ2: Operator Convenience Package F44: Heavy Duty Chassis 74D Lrri Carmne Spec Cu YE5 Demonstrator Identif Thanks! Matt __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

07-06-2009, 11:31 PM	#2
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: trim codes identification Bump __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

07-07-2009, 11:16 PM	#3
USSkoval Registered User Join Date: Jul 2009 Location: West Jefferson, OH Posts: 999	Re: trim codes identification G80 is the Gov-loc, AKA Gov-bomb. Will only lock at speeds of about 25mph or less, but will stay locked at speeds greater than that, until both wheels gain traction. It is failure prone. F44 I believe is the Heavy Half option?

07-08-2009, 03:51 AM	#4
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: trim codes identification well that's pretty exciting about the g80. looks like I'll be taking an easy with this truck! I know that my truck is a "Trailering special".so that might have something to do with the f44. __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

07-08-2009, 09:05 AM	#5
USSkoval Registered User Join Date: Jul 2009 Location: West Jefferson, OH Posts: 999	Re: trim codes identification Don't worry too much about taking it easy, as it doesn't seem to matter. They (G80) usually fail in one of two ways- just plain quit working, or they grenade.

07-11-2009, 01:04 AM	#6
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: trim codes identification anyone got a web site I can use to look these up at? __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

07-11-2009, 01:39 AM	#7
sierra4x4 Registered User Join Date: Jan 2009 Location: Canada Posts: 308	Re: trim codes identification Here is a site to look up RPO codes.http://www.c2e.info/rpocodes/

07-11-2009, 09:21 AM	#8
USSkoval Registered User Join Date: Jul 2009 Location: West Jefferson, OH Posts: 999	Re: trim codes identification Only ZQ2 and F44 were listed, which stated about the same thing. I was starting to think that that listing was only for vehicles built within the last 20 years or so. Then I noticed "YE7- Special Performance Package, '71-'72 GMC Sprint", so I guess that's not the case, lol.

07-11-2009, 05:34 PM	#9
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: trim codes identification lol yeah. I did noticed that it just told what was basicly on my build sheet. but I would really like to know what a Advanced Price Sheet,Lrri Carmne Spec Cu,Demonstrator Identif, all mean. maybe Keith might know __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby Last edited by 79gmcc15; 07-11-2009 at 05:34 PM.

07-11-2009, 11:27 PM	#10
Benelli Watchin the rust grow Join Date: Oct 2008 Location: Western Nebraska Posts: 950	Re: trim codes identification Where do you find this at in your truck? __________________ 1979 Chevy K10 (H/D Front end) - 350 w/ Holley Truck Avenger, Weinald Intake manifold, headers, bored .060 over, mild cam, Built up TH350 (TranStar Shift kit) with a part-timed NP203 t-case SOLD ($3,000) 1997 Chevy Silverado 1500 - 4.3 vortec, extended cab, 21 highway MPG, stock. "Red" SOLD ($3,000) 1987 Toyota 4wd Pick-up - work in progress, future DD SOLD ($1,850) 1998 Dodge Ram 2500 Cummins 5spd Quad cab - old 12 valve with some work done 2004 Chevy Silverado - Black, 4x4, 5.3L, stock for now Underneath that rust is a heart of gold

07-12-2009, 01:19 AM	#12
USSkoval Registered User Join Date: Jul 2009 Location: West Jefferson, OH Posts: 999	Re: trim codes identification I came across something else. ZQ2 is simply an option that covers both the power windows AND locks. So basically it's a package that only includes two options.

07-12-2009, 09:22 AM	#14
68 TT Still plays with trucks Join Date: Jul 2009 Location: Spokane, WA Posts: 3,556	Re: trim codes identification G80 is not specific to Gov-Bomb posi carriers. It is a generic option code that has been used by GM for decades to designate a limited slip differential. My 68 Camaro has this option code with its clutch type Eaton built posi carrier in the 12-bolt. It depends upon which vehicle you have and what year range as to what you have. An easy way to tell if it is a Gov-Bomb without pulling the cover is to jack up the rear end and then rotate one tire. The other tire will not rotate in the same direction if it is an open carrier or a Gov-Bomb. If the other tire rotates in the same direction as the one you are turning then you have a clutch type posi carrier. GM didn't put the Gov-Bomb in cars so if you have one then a Camaro or Firebird from 72 to 81 can be a good donor for a clutch type posi to retrofit if you have the 8-1/2" 10-bolt rear end.

07-12-2009, 10:00 AM	#15
USSkoval Registered User Join Date: Jul 2009 Location: West Jefferson, OH Posts: 999	Re: trim codes identification As far as I know, ALL 1/2ton GM trucks got the gov-bomb from '73-current, if equipped with G80. Can anyone confirm this? Also, apparently GM did put out some cars with the gov-bomb. I've been told that there were some '82-'84 F-bodies built with it.

07-13-2009, 11:06 AM	#16
68 TT Still plays with trucks Join Date: Jul 2009 Location: Spokane, WA Posts: 3,556	Re: trim codes identification With the abuse cars with posi tend to get I wouldn't bet many Gov-Bomb posi's lasted long in Camaro's. My 83 Z/28 was on its third rear end by the time it was ten years old when I bought it. I put two more in it over the next five years. The 3.73 gears and a five speed were really rough on the little 7-5/8" 10-bolt. If only GM had been smart and put the 8-1/2" 10-bolt in the 82-2002 F-bodies instead of the tiny POS 7-5/8" 10-bolt we would have a great supply for clutch type posi carriers.

07-14-2009, 01:11 PM	#24
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,178	Re: trim codes identification I got a note back; apparently we changed systems in the early nineties and the old (unused) information was not carried forward. I can call the retired Specs guru at home if you would like to continue to pursue, or we can stop at this point. Let me know what you prefer. Also - I should mention that RPO codes do get reused. For example, at one time the code LS6 was a fire breathing, top of the heap 1970 big block 454. That code is in use today as a small block engine RPO. FWIW - K [quote] Keith - There is a system (OCS) that has all the RPO/SEO codes. This is out on the WEB, I've included a screen shot, maybe you can look for yourself. We can inquire or request new ones. In 1979 the information was in IMS (we use GPDS now). The switch was made in 1990 to GPDS and it appears no history was brought forward from IMS. This may be a dead end. If you truly need to talk with Russ there are folks in my group that have his home phone number. B3W: Advanced Price Sheet RPO is now "TEST, water--delete" F44: Heavy Duty Chassis still exists 74D Lrri Carmne Spec Cu RPO does not exist YE5 Demonstrator Identif RPO is now convenience pkg, Deluxe Comfort & Decor Level 5 Elaine [endquote] __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 07-14-2009 at 01:12 PM.



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07-15-2009, 02:06 PM	#25
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: trim codes identification well as I stand. I think the more info there is about the trucks the better. BUT I don't want to put you out too. it is more of a curiosity then anything else. if it is a hassle to call to you or him, or you don't want to. I completely understand. and I appreciate what you have done so far! Thank you! Matt __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby Last edited by 79gmcc15; 07-15-2009 at 02:07 PM.

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