Hopefully, this area will better explain the cowl tag data plate located on your car. All the cowl tags vary from year to year, so if you do not see your information exactly, don't be alarmed. This page will help you decode your cowl tag and make sense of how your car was originally optioned. See below for an example of a cowl tag from 1978 and the various areas of the tag itself. The cowl tags aslo did vary from year to year in the placement of some of these codes, but with this overview, you should be able to decode the numbers.
The cowl tag is broken down into the following areas (from left to right and top to bottom):
Model Year: This was the model year for the car. This sometimes does not match when the car was actually built, but for what model year it was built for. Production runs started in September and ran through August the following year. So, for 1978, they started to build the cars in September of 1977 and ran through August of 1978.
Car Model Line: This designated what car model was rolling off the Fisher Body Plant assembly line. As you will see on the break downs on the years, this information did not always match what the VIN number stated. In the early years from 1967 to about 1973 or 1974, they were pretty consitiant with following the VIN number. Meaning, if the VIN number stated a "2287" for Trans Am, then the cowl tag usually followed suit with a "228" on the cowl tag. When you get up into the later years around 1976 and later, the VIN number stated a "2W87" for Trans Am, but the cowl usually read "2FS87" for Firebird. Not to worry about this when you are decoding your cowl tag. Pontiac and GM were rolling these cars off the assembly line pretty fast, so they mostly left the Fisher Body Plant as Firebird bodies and were made into Trans Ams at the GM Plant.
Production Plant: This was the area for which Factory was producting the car such as "N" for Norwood, Ohio or "L" for Van Nuys California.
Fisher Body Production Number: This was the actual production number of the body when it rolled off the line at the Fisher Body Plant. No, this does not match the Pontiac Production number located at the end of your VIN number. These were two totally different plants between GM and Fisher, so these numbers don't match. Also, the production number is not relative to the car...... meaning that this production number was relative to the cars rolling off the Fisher Body Plant's line which included more than just the Firebird/Trans Am car line.
Interior Trim Code: This was the area for the interior trim colors It was a code that consisted of two numbers which designated the color and one letter which desginated the type of interior such as "Standard" or "Deluxe".
Misc. RPO Codes: This area in the middle of the cowl tag was usually reserved for misc RPO codes such as the "A51" for bucket seats, "A31" for power windows, "WS4" for Trans Am, or the infamous "Y82" or "Y84" codes for Special Edition Trans Ams. Now these codes varied from plant to plant as far as what information they liked to put in there. For example, the Norwood Ohio plant used the "WS4" code for Trans Am in this area, but usually never used it for the "Y82" codes. But the Van Nuys California plant usually used the "Y82" codes, but usually never used the "WS4" codes for Trans Am. So again, if you do not see a certain code here when you think it should be, check to see which plant it came from..... For More information about RPO codes, check this page out: RPO Codes
Exterior Paint Codes: This area was for the extrior paint color of the car. The codes were a two number code for the color followed by an "L" for lower paint code and a "U" for upper paint code. Now, most Firebirds and Trans Ams had the same paint code for upper and lower body paint, but certain cars such as the Formula, the 1979 10th Anniversary Trans Am, or the 1980 and 1981 Pace Cars had different codes listed for upper and lower body paint. The Formulas quite often had a different lower body color. The 1979 10th Anniversary has Silver listed for the lower body paint and Charcoal for the upper body paint, and the Pace Cars had White listed for the lower body paint and Charcoal or Black for the upper body paint. But for most instances, these two color codes should be the same.
Build Date: This area was for the actual build date of the car. This was a two digit number code followed by a letter. The two digit number designated the month the car was built, and the letter code designated the week in that month the car was built.
Secondary Interior Color: This area listed the secondary interior color option. This is where they really went all over the place with codes and numbers. Sometimes this code is failry easy to decode with abbreviations like "BLK" for Black, "OXB" for Oxblood, "TAN" for Tan, or "CAR" for Carmine. But sometimes this code is not so easy to decode. But if you look at the other interior code on the "Interior Tirm Code" line, you can usually make out what it stood for. For example, the code listed here might be a "T-3". Well, if your interior color code is a "62" for Camel Tan, then the "T-3" stood for Tan as your secondary interior color. I have seen codes all over the spectrum like "T-3" for Tan, and "BL2" for Blue, or even I have seen a "B--" for Black. So, sometimes these codes are easy, but whatever is listed there, you should be able to tell from your other interior trim code was this codes stands for. Most of the Firebird/Trans Am interiors were a single color code, but some of the cars came with a white interior, so this secondary interior color could have been a variety of colors such as black, red, and blue.
Fisher Body Time/Date Code: This area was used for the Fisher Body Plant and was the Time and Date code for when the car was built. Now since quite some time has passed since these cars were built, some information is just lost and figuring out what exactly thius code is or how to decode it has been lost to time. I have not seen any solid information yet that has decoded this time and date stamp.
Well, I hope that this will shed some light on helping to decode your cowl tag for your car. Click on the links below to decode the cowl tags from the different years.
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