Build Date
 

Is there a way to determine the actual build date from the VIN?

Re: Build Date
 

you can get year of build

http://67-72chevytrucks.com/Chevyear.html

Re: Build Date
 

Yes, I'm aware of that. I would think there is way to find the actual build date from the serial number, the last 6 digits of the VIN. I have never seen a breakdown for this.

Re: Build Date
 

Last six digits are the production assembly number
Which i would think will be hard to break down which day it rolled off the assembly line

Re: Build Date
 

The Camaro corvette chevelle crowd has figured it out but
Only with tons of research and vin number databases that have
Been accumulated for decades...No one ever thought trucks would
Be so valuable and faked like the muscle cars..now everyone
Has a holy frail big block loaded super just like there are 3 times
more matching number 69 Z28s than were built.

Re: Build Date
 

Did you check behind the seat for your build sheet? Fingers crossed for you. ;)

Re: Build Date
 

:lol:Exactly. I believe a the tag on the door frame or back of the door shows the month & year.

I'll have to drag it out, but I think it's the field in the upper LH corner of this build sheet. On this reads 05-19ish-71, which is consistent a plate. There's another value in the box as well.

Heck with the Camaro/Chevelle crowd, we got this figured out;) I'll bet they say trucks "aren't numbers matching" too:lol::lol::lol::lol:

Re: Build Date
 

Truck dates matter. (too soon?)

I think all of the information is out there, especially with the cooperation of those with build sheets. Maybe we couldn't get to the exact date, but I'd think within a few days is likely.

I'd be willing to start a little proof of concept if we could get a few to share what information they have specific to say a few month period.

Re: Build Date
 

I believe SSTim had an ongoing project wherein he was cataloging build date vs VIN (at each plant) for dbase purposes, but I don't know what became of that effort.

Re: Build Date
 

Jocko, he was able to nail mine down to a 2 day window. I sure miss SSTim. He was such a great asset to this board when he frequented more.

Re: Build Date
 

I miss him too. When I first dove into :chevy: he was real helpful, right off the go.

I pulled out the build sheet on my 71 to see how the first field reads, the picture demonstrates. What's cool is I never realized the small garage/sales operation's name is in the charge to field. I knew where it came from, a short hop from the original owner, and I know of the original owner too. The truck was special order, which is why I'm stuck with leaf springs:lol::metal::metal:

I can hear it now, "We need a Chevy on top a GMC carriage". "Why not buy a GMC?" "The guy wants a Chevy":chevy::gmc2::chevy:

EDIT: Hmm, trying to decipher job number 24419, maybe someone knows?

Strikes me the 24 is a component of Schedule No. 24. Perhaps it was the 419th unit blessed under what's essentially job number 24? I thought perhaps 19 matched the the day of the month for the build date, but I'm guessing it's just a coincidence.

Re: Build Date
 

Thanks for the replies. My original build sheet crumbled as I touched it.

Re: Build Date
 

Not sure if all years had it but on the drivers door there is a blue label with the build date Just after the black writing on the 1st line like this one. It is a bit faded

.

Re: Build Date
 

My '70 was built 9-69

Re: Build Date
 

Thanks for the reply. My truck has been repainted twice. This label is missing.

Re: Build Date
 

Do you have the original motor?
Info on it to get you close.

Re: Build Date
 

No, the original 327 was replaced by a 350 in 1974.

Re: Build Date
 

I was able to get the build month and year of mine from the serial tag on the transfer case, if you’ve got a 4x4 that might be a place to start.

Re: Build Date
 

One way to get closer that is easy, is the glass date codes. Wont get the date but likely within a month or two. Then other date codes can help refine. (Yes, assuming there is at least one piece of original glass)

Re: Build Date
 

Can't you roughly find out the build date through the build of the rear axle? My Janesville 70 C/10 was built in December and, I was able to figure out it was built around the 12th but, the axle I believe was built the 1st week of December.

Re: Build Date
 

If your truck is like my 71, you can get an idea of build date based on the date codes on the block and intake, for example. Nearly all date codes on this were a month prior the build month. Tells me things were working quickly, flow of inventory like it's supposed to be. May not apply to other situations.

A few more hints for perhaps build months.

My 400TH transmission is stamped 4 -71, as well as 19. This is likely a date code.

I suspect this 4-23 on my frame rail is the month and day, just a guess.

Take a peak at your brake pedal. Might be E-brake, if I remember the brake pedal has a date code.

70C-10 mentioned axle. My axle has a bunch of codes, but I haven't seen a date code. That said the ring gear is stamped 9/71, which to my truck means it was replaced soon after the truck was purchased. It's that or an entirely new axle soon after, hard to say, I wasn't there;)

Re: Build Date
 

Thanks everyone. I'll check this out.

Re: Build Date
 

Just to be clear - component date codes, while often close, can really only tell you a "no earlier than" build date for the truck. It is not uncommon to have components sit on the shelf for a few months, if not more, before beings installed.

If you really want to know your build date and you don't have a door sticker or build sheet - I'd post the model year, assemble plant, and last 6 of your VIN - and then members with the same model year and assembly plant can tell you their last 6 and known build date from their door sticker. That's essentially the goal of Tim's project, but you could easily do it in a focused way in this thread for your truck. Just a suggestion.

Re: Build Date
 

My '69 has a stainless plate that does the same job as those stickers above but doesn't have a build month/year on it (Fremont California assembled truck). If you could find a reference to the ending serial number by month you could then figure the average number of trucks built by day. But then you would need to know if they worked on weekends, how many shifts per day, holidays, history of line or labor problems that may have stopped production for hours or even days, ect. Eventually you could get it down to shift and even a good guess as to time of day. It would take a lot of research but the Corvette, Camaro and other GM guys heave been able to find this info. Talking to them would be a good pace to start researching. They may have actually acquired this info along with the other car lines they got from GM archives.

Re: Build Date
 

Yep that’s exactly right, Tim compared my 72 Janesville truck to other similar vins to get my date, the transfer case tag was may of 72 and my truck was built in June of 72.

Re: Build Date
 

Thanks. My truck is a 1967 C20 and was built in Fremont. S/N 116048.

Re: Build Date
 

Would it make sense to have a single unified thread for S/N - dates. ???

I'm trying to find builds close to my 71 to verify build month: 1Z622515

Re: Build Date
 

If we could keep it on track I think that would be a great idea personally. If those with known build dates could post the build sequence of there vin and the plant. The only problem I see is after several pages it will be a pita to search thru.

Re: Build Date
 

I've seen this done on a guitar forum.

All new S/N-date entries would be added to each years list.

Re: Build Date
 

This is the info I have on my build date. My truck is a GMC, so my info might not help much. VIN xxxxx-Z120204
From build sheet: job 01069, scheduled no. date 03-29-71
Blue door tag: mfd 4/71
If I understand correctly, my truck's job number was created on 03-29-71 and the truck was built and completed in very early April 1971. Looks to me like the 20204th GMC truck built at Fremont for 1971 model year.

Re: Build Date
 

Ugh............... horizontal format is goofed once I post this. Will need to breakout GMC and Chevy into separate threads or format them above/below each other.

1967 GMC Chevy


1968 GMC Chevy


1969 GMC Chevy


1970 GMC Chevy


1971 GMC Chevy

Z120204 4/71 1Z622515 12/70 (best estimate)

1972 GMC Chevy

Re: Build Date
 

My parents bought this '67 C20 in Feb '69 from the original owner. I have the bank finance papers. I also have the original owner's California "Registration Card", as they called it then. It states that the truck was sold in 1966 and first registered on Jan 6, 1967.
I have been trying to find answers for these questions with no luck:
Does anyone know when the first '67s rolled off the Fremont assembly line? How many were produced per day? Did the serial number/production number sequence start at 000001 or 100001?
Thanks again.

Re: Build Date
 

67’s went on sale in the last quarter of ‘66 if I’m not mistaken. I know I’ve read a few threads on here where people had 67’s built in late ‘66. This I common across the whole auto industry. Normally new model years are released in the second half of the current year.

Re: Build Date
 

Carl, to your request to break Chevy/GMC out separately, here you go - people can just quote this post and it will grow and filter to the bottom (and pls insert new entries in order for the year, earliest-to-latest) - I believe some sort of text entry, a couple characters outside the quoted region will have to be entered as well to meet the minimum post requirement.

Please include last 8 digits of VIN (model year + plant + serial) along with build date (from blue door sticker or build sheet, no guesses! ;))
Feel free to enter your last 8 = TBD, that way as the data fills in around it, folks can make an educated guess as to the correct month - but please only enter verified dates.

1967 GMC

1968 GMC

1969 GMC

1970 GMC

1971 GMC
1Z120204 = 4/71

1972 GMC

_______________________

1967 CHEVROLET

1968 CHEVROLET

1969 CHEVROLET

1970 CHEVROLET
0Z100986 = 9/69

1971 CHEVROLET
1Z622515 = TBD
1Z657051 = 5/71

1972 CHEVROLET
2Z153077 = 3/72
2Z168790 = 5/72

Re: Build Date
 

72 added

Re: Build Date
 

What are the odds? I was just on Rockauto looking at brake hoses for my '71 and they have notes for "To 3/71" and another for "From 4/71", so I had to go find when mine was made.

1Z653085 = 4/71

Re: Build Date
 

Carl, to your request to break Chevy/GMC out separately, here you go - people can just quote this post and it will grow and filter to the bottom (and pls insert new entries in order for the year, earliest-to-latest) - I believe some sort of text entry, a couple characters outside the quoted region will have to be entered as well to meet the minimum post requirement.

Please include last 8 digits of VIN (model year + plant + serial) along with build date (from blue door sticker or build sheet, no guesses! ;))
Feel free to enter your last 8 = TBD, that way as the data fills in around it, folks can make an educated guess as to the correct month - but please only enter verified dates.

1967 GMC

1968 GMC

1969 GMC

1970 GMC

1971 GMC
1Z120204 = 4/71

1972 GMC

_______________________

1967 CHEVROLET

1968 CHEVROLET

1969 CHEVROLET

1970 CHEVROLET
0Z100986 = 9/69

1971 CHEVROLET
1Z602191 = 8/70
1Z622515 = TBD
1Z653085 = 4/71
1Z657051 = 5/71


1972 CHEVROLET
2Z153077 = 3/72
2Z168790 = 5/72

Re: Build Date
 

1967 GMC

1968 GMC

1969 GMC

1970 GMC

1971 GMC
1Z120204 = 4/71

1972 GMC

_______________________

1967 CHEVROLET

1968 CHEVROLET

1969 CHEVROLET
9Z845573 = TBD
1970 CHEVROLET
0Z100986 = 9/69

1971 CHEVROLET
1Z602191 = 8/70
1Z622515 = TBD
1Z653085 = 4/71
1Z657051 = 5/71


1972 CHEVROLET
2B132457 = 1/72
2Z153077 = 3/72
2Z168790 = 5/72
2J160173 = 6/72

Added my ‘69, ‘72 and geunther‘s ‘72. When we quote the list we will have to be sure to quote the most recent update or it’s not gonna stay up to date and will get really confusing really fast.

Re: Build Date
 

So true! I saw where guys were building '69 SS and Z/28 Camaros as far back as '74. NOS trim for the fakes was way more available back then, too.

Re: Build Date
 

Added my '72.