Hey guys, I am new here at third gen and boy I have found so much info that is useful. I am about to ask some questions about a recent 1990 Iroc Z covertible that I had just purchased that are not adding up. First at hand, it specify's the RPO code D88 that says in the GM dealer service manual that it is Stripe, Hood and rear decklid. I have talked with several local enthusiast and had stated to me that since the RPO code is stated that the factory did not necessary have these on but they may be added. I have seen on some threads and also other sites that this may be the RPO for the stripes along the bottom and rocker panels. But also it shows RPO code 86A which says Stripe, Light gray & black. Maybe someone can clearify this.

Also, I see on my dash, the Iroc Z badge is orange and not yellow. This is not adding up either, so I called my buddy at the local GM dealership to do some investigation. My VIN is specified as a 1990 BUT he also told me that GM did sometimes use other vehicles from the prior year and convert. We discovered that some parts are from 1989, i.e... ECM on my 90' Iroc. So now the true adventure starts.

He also stated that since GM knew that this was going to be their last run at Iroc's that they were trying to produce as many as possible in such short period of time so they might of used a left over 89' Z28 /Iroc model and sent off to be a convertible. It does have a 90' model engine as per his descretion. The manufacture date was 10/1989 and he wasn't sure when the production date started. Any info would be greatly appreciated. Be gentle, Im a newbie.

 

http://cs.pontiac-club.com/graphics/...-car-codes.pdf
Try these codes,

 

I thank you for the response. That's pretty much what I have already discovered. I guess we can forget about the D88 code. What about the 1990 dash emblem. Is it yellow or orange?

 

https://www.thirdgen.org/1990-chevy-camaro,
This says yellow

 

Everywhere I look says yellow badging. I talked to a guy in Searcy Arkansas today that owns Camaro Autosports that deals with third generations and he told me that there is no surprise to him that it has the orange badging that GM used their leftover parts. Man, confused!

 

Maybe the previous owner changed them,it's common!!!!

 

I have a 90 iroc hardtop with a 5.7 tpi. My dash emblem is orange also. I always wondered if it was original or if someone changed it before I bought it.

 

https://www.thirdgen.org/forums/inte...ghlight=yellow

 

I think I will just get into the next chapter of my restoration and just reuse what was already there. This could be a sake of debate for hours. I know the crazy thing is through my restore project that I'm having to buy a lot of 1989 parts to match what's in this car. Crazy

 

One thing I can add is that everyone who has looked at this car is not shocked and stating that GM has done it. LOL
So if that is the case, anyone claiming they have a rare IROC and it was manufactured at early production, they maybe right.

 

All 1990 IROCs were built before Jan 1 1990.

My knee bolster has a date inside of Jun 12 1989 so I assume it was finished that day. My dash has an orange Z28 badge with the second line (IROC-Z) in yellow. I am the original owner of this car.

 

Sweet!!! I'm glad someone else has the same badge!

How many here have the D88 RPO code as well out of being curious? I'm speaking of the the 90 Iroc models only.

 

By the way I have D88, I would imagine that nearly all IROCs have it. There is a code for decal delete, but I don't know what it is.

 

I believe the code for stripe delete was DX3.

The crazy thing is that I am currently restoring a 90 Iroc Z and have discovered so many crazy things. I did purchase a genuine GM dealer service manual for the 1990 camaro and see that D88 was specified for hood and deck lid stripe. I also found code 86A was specify stripe at lower area to be light gray and black which my car has that code. I am just doing the lower stripping due to that I have never seen a factory hood and deck lid strip that year from the factory. I know that GM sometimes added this code as a package with something else or in other instance, just being generic. I see the arguments online or even these forums on what the D88 code but I stand not to get involve with those. Just I do observe and see what the final point will be. As of to this point, I haven't seen anything that has specified that its true or not. It's one of those never ending argument. I even seen on one of the online stencil shops that they specify that code to be lower stripping also but only 88-89. Does not specify 1990. So who knows.

 

There were no factory deck lid striped cars that I'm aware of. D88 was used in the past to specify hood and deck stripes, but in 90 it's only for sport decal striping or some such. I'm thinking that D88 probably includes the giant IROC decals for the doors.

 

I appreciate your replies.

 

D88 designates that the car has stripes. 86A designates what color stripes. GM did not use 1989 bodies for the 1990 model year. Beware of the things people say. They don't know and they shoot from the hip, especially people at dealerships. Your VIN is a 1990, then the car is a 1990. The finish details like dash emblems come at the end, so using 1989 bodies would have nothing to do with interior details. The ECM is probably not an 89 ECM. It has a date of 1989 on it because all 1990 Camaros and Firebirds were manufactured in 1989. Not a single 1990 came off the line after January 1, 1990. All parts should be date coded 1989.

In regards to the orange emblem, did you ever think that kids might have stolen the original badge when the car was new and the dealer was able to get the orange ones only? This has happened to many cars that I personally know of. I had friends that would walk the dealer lots at night and steal dash badges and GFX badges. GTAs were also known for "losing" their emblems.

 

My car has an orange dash badge, I bought it new. My car also has an RS emblem in the driver's rocker panel. There are absolutely no signs of anything ever being replaced or changed from what came factory. The car was certainly never a recovered theft or repo because there were no signs of any repair work of any kind and some things you just can't hide.

Given the dealership I got it from, I seriously doubt they could have covered anything up in the body shop. They tried to destroy my cars interior the first (and only) time I ever took it in.

My point is that people working on an assembly line make mistakes just like anyone else. Given the number of steps to assemble a car, I would imagine that most cars have one or more things that aren't the way they were supposed to be. That's probably why most new cars make more than one trip back to the dealer to fix nit-noy stuff. I would also say that as far as the dash badge goes, the factory probably used what they had available. There seems to be quite a number of "incorrect" examples out there.

 

I never said that the car was wrecked or required a body shop to replace stolen emblems. Like I mentioned, I have first hand knowledge that the emblems can be easily removed without doing any damage to the car at all. The dealer would just get the emblem from parts and reattach. Dealers don't really have a clue. They are salesmen and they want to sell a car. Put an emblem in the hole and hope it's correct. If the buyer says it's wrong, they'll swap it from another car. That's all I'm saying.

Back in the day, dealers would do whatever they could to sell a car. Even in the 90s. My wife wanted a car with a rear spoiler, but the dealer didn't the car she wanted with the options she wanted. They had another car in the same color with the rear spoiler and they swapped trunks. I have even had dealers swap rims just to sell a car. I bought a '95 Olds Cutlass and wanted the 5 spoke rims. The dealer threw 'em the car from another one on the lot. Somebody's window sticker showed 5 spoke rims, but had the standard rim. It was common back then.

 

I do want to add that my car was purchased from the original owner and that it has a clear title and no accidents reported through carfax. Since I am going through the restore process, I am creating this beauty back to what came from the factory so I am actually doing a complete restoration of my 90'. I am completely replacing everything from the wire harnesses to nuts and bolts, definitely not sparing any expense. I did replace the ECM it was from the 1989 Iroc series. I even had the dealer pull my vin and tell me the part number which still came back a 89 ECM. The 90' model ECM was no where close to matching with my wire harnesses that where already in the car. The chip was in a completely differ location and there was 3 harnesses to be plugged in. My has only 2 plug in harnesses. I know this sounds crazy but I have spent countless nights researching everything. Once again, I am not trying to start and debates or arguments, honestly. But once you start basically rebuilding the car back to absolute factory, you would be amaze of the things you find out.

 

So your official position is that all 1990 cars with orange dash badges are replacement badges and that the factory did not do it?

 

That's not what I'm saying. I'm saying that it's a possibility and that if people tell you that GM ran out of the correct part or whatever, that there could be a simpler reason.

A car manufactured in October was 1/2 way thru the 1990 model run. It's not like the car was an early build that was before the suppliers could get the new designed parts to the assembly line. It's also not so close to the end that they were out of parts and had to use whatever they could get to complete the car. That's why I stated that in this case, the car might have had some juvenile delinquents messing with the car while on the lot and the dealer replaced the emblems with whatever he had on hand. That's it.

 

My car was built Jun 12 1989, where does that fall in the production run? I understand where you're coming from though. But it was a one-year only part for a very low production model, unlike the yellow lettered lock and window buttons that seem to be extremely rare now, and they were used on all models. I don't find it hard to believe that they simply used what they had available and that there are probably a good many cars without the yellow badge. I guess it all comes down to what GM planned to do that year. Did they set out to build exactly 4213 cars? I kind of doubt it. Maybe they planned to build somewhat less and only made enough yellow emblems to cover it. Maybe take a poll and find out just how many 1990s around here have the wrong badge. If it's more than a couple of percent, then I think that would show that the factory probably had a hand in it. By looking at VIN sequences (though many may not want to share that info) or build dates we could possibly learn something new.

 

The thing I would like to add is that everything that I have either read or even researched is that I know there were several option packages from 1-21 with interior group. Who knows how the factory had these groups set up or even if there was a protocol as per assembly. We are searching into the abyss of the unknown, even due to laboring aspect of that time. Bottom line is who really knows what happend or what the intents were?

By the way, may last six vin# are 117115

 

That's a lower VIN sequence number than mine by about 16000. That's really weird since you said your car was built in Oct 89 (or did you mean your engine was built then). Where can we find the absolute build date for the car? I went by the date hand written in the knee bolster because that makes sense that they'd install it near the end of the assembly line and it would be one of the last things to go into the car.

 

The factory date on the door sticker was 10/89 which I am assuming is the factory date? This is what I was always told. But also like I said earlier, some of the parts that I am locating are even from 1989 Iroc Z builds. Like I said, it is absolutely confusing.

As mentioned before, the gentlemen I spoke with Camaro Motorsports specified that ASC was the build for the convertibles. GM would ship Camaro coupes to them since they didn't have a factory line to build at the plant because of the low production numbers. Once again, he said that he wouldn't be surprised if they took a actual 89' Iroc and converted to a 90' at the factory. It sounds far fetched to me but who knows the logic of thinking in 1989. Times then were basically let's get the car built and move it to the dealership.

 

Well, I think you might be on to something. Does your car have the air bag and yellow everything else? The 1990 production started August 11, 1989. If your car was built in June of 1989, then you have a 1989 Camaro, not a 1990. If it was built in June, then you should have the red/orange emblem on the dash and the older style instrument cluster with no steering wheel airbag.

Also, what is this knee bolster you keep referring to?

Check your VIN number. The 10th digit is K for 1989 and L for 1990.

 

My vin does have the L. Like I said it is titles as a 1990 and also when I pull a carfax, it specify 1990. I am curious of what the knee bolster is as well.

There is no airbag but the steering wheel was added aftermarket, Grant (GT). I've read where the airbag in the 90' was added as a standard to these cars. But I'm not sure if it originally had it. I can't find a RPO code that would specify nor can I obtain a original build sheet from the dealer. They can only use the vin for actual part numbers.

As far as the dash, I hadn't got that far into it to see if the lettering on gauges are yellow. I have the car in parts now on a rotisserie at a buddy shop about 40 miles from me. I knew the gauges where to be yellow but just hadn't look. I will next time I'm there in a couple of days.

 

The last six if my vin is 123622 and my iroc has the orange dash emblem.

 

My VIN has the L. My car also has an airbag, yellow buttons, etc etc. Ok, my door tag shows 12/89 so I guess my car was made in December. Then the knee-bolster date 6-12-89 could mean 6 Dec 89 instead of Jun 12 89. Must have been ex-military that wrote it. I do it all the time. The sequence part of my VIN is 133xxx. (just being paranoid) So I guess my car is one of the last made instead of one of the first.

The knee bolster is a padded steel panel under the steering wheel that has 5 10mm screws holding it in. Take it out and see if it's dated.

 

Cool, please vote in the poll.

 

Just out of curiosity, do those that have a orange/red dash badge also obtain the yellow markings in the dash panel and window or lock switches?

 

My car has all the other yellow things it should have. It also has the airbag and the newer cluster layout that came in '90.