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Old 02-06-2009, 02:02 PM
Chevy454 Chevy454 is offline
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Default 1969 Baltimore built A-bodies = info request

I was wondering if any of y'all with '69 built Baltimore a-bodies would mind contributing a bit of information? I'm trying to determine the extra codes on the trim tag [data plate] of the '69 model Baltimore built Chevelles, but I noticed that the Pontiacs share this 6-digit code in the lower-right quadrant of the tags as well.

What I'd ultimately like to see are some build dates followed by their corresponding 6 digit code...also, does the PHS info show an actual *production* date, or just a ship date?

Anyway, I have a rough *theory* on this 6 digit code [you folks may already have figured it out] but I need just a larger sample of cars to see if it works out...

Thanks in advance, and take care...

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Old 02-06-2009, 02:09 PM
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also, does the PHS info show an actual *production* date, or just a ship date?
No production date--does have the ship. But the ship date is from the factory if bound for a dealership at that time. If a zone ordered car, the ship date is from the zone lot to the dealership.

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Old 02-06-2009, 03:00 PM
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Originally Posted by Bet Winner View Post
No production date--does have the ship. But the ship date is from the factory if bound for a dealership at that time. If a zone ordered car, the ship date is from the zone lot to the dealership.
Well, that figures! LOL!! On '69 Baltimore Chevelles the production date is *sometimes* on the build sheet...is this true with '69 Baltimore Pontiacs as well? Also, on the Chevelles the last 3 digits [ex: xxx171 on tag below] of the 6-digit number in the lower right quadrant of the tag corresponds to box 24 on the build sheet [DP Seq #, see image below from a different car] and is often hand written in...can anyone confirm/deny this being on any Baltimore Pontiacs? I enclosed a tag off of one of my Baltimore Chevelles for reference...

I'm trying to look for any commonalities of the Baltimore A-bodies to help narrow down some information...Thanks!
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Last edited by Chevy454; 02-06-2009 at 03:37 PM.
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Old 02-07-2009, 12:17 AM
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6-digit code in the lower-right quadrant of the tags

What I'd ultimately like to see are some build dates followed by their corresponding 6 digit code

Anyway, I have a rough *theory* on this 6 digit code [you folks may already have figured it out] but I need just a larger sample of cars to see if it works out...
Build week is 1C and the 6 digit number is 112879.

What is your theory--a Baltimore A-body vehicle numbering?

(Also, I have not found a build sheet.)

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Old 02-07-2009, 12:59 AM
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I don't know what the numbers mean but there is definetly a pattern. The Body numbers are all over the place but the 6 digit numbers always stay in order.

I have the following info:

VIN build date Body # 6 digit #
B107678 09C 503204 016031
B110236 09C 516654 021668
B122223 10D 527185 044554
B125043 10E 530927 050164
B126014 10E 533488 052040
B127747 10E 527794 055508
B137436 11D 544610 073643
B150249 01B 558552 089157
B151222 01B 548953 101016
B151829 01B 557813 102579
B156002 01D 558063 116620
B156677 02A 566342 118620
B163075 03A 566274 138132
B164889 03B 573646 144717
B166394 03C 574614 149430

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Old 02-07-2009, 10:29 AM
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Originally Posted by Bet Winner View Post
Build week is 1C and the 6 digit number is 112879.

What is your theory--a Baltimore A-body vehicle numbering?

(Also, I have not found a build sheet.)
I'm thinking the first 3 digits are a Julian date and the last 3 digits we know are a daily sequence number. So, in that 6 digit number you'd have which car off the line on which day...

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Old 02-07-2009, 11:53 AM
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I'm thinking the first 3 digits are a Julian date and the last 3 digits we know are a daily sequence number. So, in that 6 digit number you'd have which car off the line on which day...
From John's list, you can see that these 6 digit numbers appear to be lined up according to date, but I don't know how to get a Julian date out of it. Please explain this if you still believe that we can.

It may tell us in what order cars were built--maybe not.

John, thanks for running down all that info!

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Old 02-07-2009, 12:45 PM
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I think he is saying the first 3 digits would be the Julian dates of that model year (which would be Sept.-Aug. approx), so John's first example 016031 would be the 16th day of the model year, and the 31st car off the line that day. Correct me if I am wrong on that...

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Old 02-07-2009, 01:12 PM
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Don't have trim tag at the moment

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Old 02-07-2009, 02:09 PM
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I think he is saying the first 3 digits would be the Julian dates of that model year (which would be Sept.-Aug. approx), so John's first example 016031 would be the 16th day of the model year, and the 31st car off the line that day. Correct me if I am wrong on that...
The third week of Sept. 1968 begins with 9-15 which is Sunday and 9-16 is Monday. If this follows John's 09C correctly as the third week, and 016031 is the 16th day of the model year, then 9-1-68 was the first day of the model year.

That may not be correct, but if it is, then my Judge's 112879 is December 21, 1968. Maybe I am not looking at this correctly. Interesting though.

John, do one of your 01B's represent a Judge?

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Old 02-07-2009, 02:13 PM
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Originally Posted by RicksGTO View Post
I think he is saying the first 3 digits would be the Julian dates of that model year (which would be Sept.-Aug. approx), so John's first example 016031 would be the 16th day of the model year, and the 31st car off the line that day. Correct me if I am wrong on that...
Yessir, that is indeed what I'm saying...however, whereas the Julian date on a '69 model 400thm transmission started on the calendar day January 1, 1968, and continued each and every day after, I think the Julian date on the trim tags is actual production days, and doesn't include weekends, Holidays, etc...

Maybe just a shot in the dark, but it explains why the numbers are sequential in regards to build date...

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Old 02-07-2009, 05:41 PM
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I think the Julian date on the trim tags is actual production days, and doesn't include weekends, Holidays, etc...
Maybe just a shot in the dark, but it explains why the numbers are sequential in regards to build date...
For this to work with my dates, 1969 production would have to start sometime in August 1968. It would be nice to know when it started.

Rob, thanks for bringing this up.

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Old 02-07-2009, 11:40 PM
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Quote:
Originally Posted by Chevy454 View Post
I was wondering if any of y'all with '69 built Baltimore a-bodies would mind contributing a bit of information? I'm trying to determine the extra codes on the trim tag [data plate] of the '69 model Baltimore built Chevelles, but I noticed that the Pontiacs share this 6-digit code in the lower-right quadrant of the tags as well.

What I'd ultimately like to see are some build dates followed by their corresponding 6 digit code...also, does the PHS info show an actual *production* date, or just a ship date?

Anyway, I have a rough *theory* on this 6 digit code [you folks may already have figured it out] but I need just a larger sample of cars to see if it works out...

Thanks in advance, and take care...
This might help you out! 69 GTO VIN: B1701XX Build Date: 4B Body#: 578727 6 Digit# 166099

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Old 02-09-2009, 12:05 PM
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Quote:
Originally Posted by GTO JOHN View Post
I don't know what the numbers mean but there is definetly a pattern. The Body numbers are all over the place but the 6 digit numbers always stay in order.

I have the following info:

VIN build date Body # 6 digit #
B107678 09C 503204 016031
B110236 09C 516654 021668
B122223 10D 527185 044554
B125043 10E 530927 050164
B126014 10E 533488 052040
B127747 10E 527794 055508
B137436 11D 544610 073643
B150249 01B 558552 089157
B151222 01B 548953 101016
B151829 01B 557813 102579
B156002 01D 558063 116620
B156677 02A 566342 118620
B163075 03A 566274 138132
B164889 03B 573646 144717
B166394 03C 574614 149430
There is another 6 digit number we haven't discussed yet: It's called the "Carrier Sequence Number", or CSN. It is very similar to the body "gate" or fixture number that has already been mentioned, except that rather than being a one or two digit number (ie, 1 - 14) is a six digit code and represents an internal fixture.

Basically, the flow of information goes like this:

The dealer initiates the order which is tracked by the Dealer Order Number. This is an alpha numeric code (there doesn't seem to be any pattern in terms of sequence or alpha characters, like "PAE175", or "JDCXZB" or "JDCW65"). This number is used to track the vehicle/order until it reaches the vehicle assembly plant.

Once the order is screened for correctness and material availability and passes this check it is "committed" to the assembly plant. At this point the CSN is established. Vehicles are built in CSN order and are tracked through the body shop and paint shop until the VIN is established and affixed to the body. Once the VIN is established it takes precedence over the CSN.

(Incidently, in my most recent assembly plant - the Mishawaka H2 plant, to be specific - the vehicles pop off the end of the line in CSN order, not VIN order).

Here are some carriers in an assembly plant, to give you a flavor of what I am talking about:


I tried to find in my files some matrices that showed actual vehicles being tracked by the Order Number, CSN, VIN and GM Company Owned Vehicle Number (for GM pre-production vehicles) but I didn't have any; the reason being is once I had the VIN I deleted the CSN because I no longer cared. I had the VIN and the GM vehicle number and with those two numbers I could track any vehicle through any durability testing/validation testing, Captured Test Fleet usage or retrofit activities and subsequent sale or auction.

I mention all this because I wonder if the six digit codes you are seeing are the equivalent of what I am calling the CSN.

Disclaimer:

I base this on my experience in GM assembly plants, which started in 1979. I have built preproduction properties in every GM Full Size Truck assembly plant in North America over the last 30 years, so while I have lots of truck experience I have zero experience building Pontiacs or Chevys in Baltimore. I share these thoughts, which may or may not apply here, in the hopes that this may further stimulate your own thoughts/theories.

FWIW -

K

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Last edited by Keith Seymore; 02-09-2009 at 12:14 PM.
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Old 02-09-2009, 12:43 PM
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Keith, how was the 6 digit CSN derived?
Was it based on Julian date and order on the line?
Just picked out of the air?
Starts at 1 and increments with each vehicle coming out of the body plant?


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Old 02-10-2009, 03:06 PM
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Originally Posted by johnta1 View Post
Keith, how was the 6 digit CSN derived?
Was it based on Julian date and order on the line?
Just picked out of the air?
Starts at 1 and increments with each vehicle coming out of the body plant?

c) Starts at 0001 and increments with each vehicle coming out of the body shop.

I should add it starts at 0001 with the very first pre-production units in the plant (what we would now call Manufacturing Validation Build - NonSaleable) and increments up through the whole model year. It would then reset at 0001 for the next model year.

K

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Old 02-10-2009, 03:24 PM
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Old 02-11-2009, 01:03 PM
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Keith: what info does a Baltimore-Pontiac "Body Broadcast Copy" show? For the Chevelles, it lists a "sequence" number, "serial no." [vin#], "ident number" [body number], "order no." [I believe this to be your CSN number, as it's 2 letters followed by 4 digits], and "F&SO or COPO no."...often times, a "job number" is on Chevelle paperwork as well...the rest of the broadcast copy shows a crap load of options & such, naturally.

Anyway, from the 6 digit number on the trim tag, the last 3 digits are always listed on the buildsheet box 24 as "DP sequence #", which leads me to ask "sequence # from which specific day?", which is where my Julian date theory came from.

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Old 02-18-2009, 10:19 AM
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Sorry Rob - didn't see this til just now.

I'll see if I can find a '69 Baltimore build sheet (Pontiac branded) and post it here.

I don't think the Order number you mentioned is the CSN; the format doesn't sound right (plus - the "Order number" might be the actual Dealer Order number).

I stole this from a post I made over at V8Buick. This comment was made in the context of Chevrolet, Buick and Oldsmobile brands going down the same line. Perhaps it will be helpful here:

Quote:
Originally Posted by Keith Seymore View Post
a) The VIN sequence is often different in plants that build multiple brands. For example, when I worked at Flint Assembly, building Chevy and GMC trucks, the VIN sequence started at 100001 and the GMC sequence started at 500001. Since the plant built three times as many Chevy's as it did GMCs the Chevrolet numbers racked up much more quickly.

Said differently, by the end of the year you might be on Chevy serial number 297862 but GMC 512321 (for example). Fewer GMCs were built even though the number "looks" higher.

Addtionally, the VIN sequence between eight cylinder cars and six cylinder cars can often be different.

b) Similarly, some plants build in "CSN" order. The CSN ("Carrier Sequence Number) is the tracking number assigned to a particular body before the VIN is assigned. The CSN number follows the vehicle through the body shop, through paint and up to the Trim area where the VIN is installed. The plant could then continue to process the vehicle through Trim and onto (and off the end of) the Final Line in CSN order. VINs would be grouped roughly together but not necessarily in exact order.

For example, if you tracked the first 10 vehicles off the line at the start of a model year, it might look like this:

Order Number..............CSN................VIN (Serial #)
PDQX01.....................000001...........100006
PDQX02.....................000002...........100010
BZSJ2T......................000003...........50000 1
PDQX03.....................000004............10000 1
PDQX04.....................000005............10000 2
PDQX05.....................000006............10000 3
PDQX06.....................000007............10000 4
BZSJ3T.....................000008............50000 2
PDXX07.....................000009............10000 9
PDQX08.....................000010............10000 8

As you might guess it would be nearly impossible to determine what this order was 20 years (or 40 years) after the fact.


K

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Old 08-14-2009, 11:55 PM
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Bump. Good info here for another thread.

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