1967 GMC RPO Codes

[dagnabbitt]

I always find it interesting that you guys in Alaska have trucks built in Fremont instead of, say, Canada. Like you wouldn't need a block heater as badly as we do.

The RPOs seems quite legible to me, what do you need help with?

Lots of knowledgeable people on this site, just ask a question. Great looking truck.

[mcca5773]

A friend of mine has a clone from the same plant. I'm trying to recreate the RPO codes as they should have been. Some changes in verbiage from the build sheet to the SPID. I've got all of the 3 digit codes, but I'm trying to complete to 5 digits. Also found a 1967 GMC Suburban that the RPO to 7 digits. The areas that are highlighted are missing information or haven't been confirmed from a SPID.

[special-K]

Originally Posted by mcca5773

A friend of mine has a clone from the same plant. I'm trying to recreate the RPO codes as they should have been. Some changes in verbiage from the build sheet to the SPID. I've got all of the 3 digit codes, but I'm trying to complete to 5 digits. Also found a 1967 GMC Suburban that the RPO to 7 digits. The areas that are highlighted are missing information or haven't been confirmed from a SPID.

That first SPID has got to be the most descriptive I've seen. Even the TH400 is specified. The five digit codes is a thing I'm not familiar with. I don't know if, but would assume, they are standardized. Always the same two additional digits. That "Show Us Your SPID" thread offered by Dagnabbit should help you

[mcca5773]

I guess as close to correct as I can be. All great resources. Thank you. Mine is really early. December 1966. I feel lucky for the low serial number and a lot of original parts. It’s been a scavenger hunt here in Alaska to put split rims together. So many repairs for mostly neglect and shady maintenance.
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['68OrangeSunshine]

Originally Posted by dagnabbitt

I always find it interesting that you guys in Alaska have trucks built in Fremont instead of, say, Canada. Like you wouldn't need a block heater as badly as we do.

The RPOs seems quite legible to me, what do you need help with?

Lots of knowledgeable people on this site, just ask a question. Great looking truck.

A truck built in Fremont, California only has to be shipped by sea north.
A truck built in Oshawa, Ontario has to be shipped west by rail to BC, then embarked north to Alaska.
When it arrives there it's an Import.
Block Heaters were not standard equipment out of Fremont, true. I imagine the Anchorage Chevy dealer did a land office business installing them.

I worked a few fishing boats in [and out of-] Cordova, AK in the summer of '88. [Halibut, Salmon.] I was surprised at the number of older Chevy trucks there. Mostly of the '67-'72 vintage, which stood out to me since I owned a '68 C/10 Stepside [and still have it.]
Most if not all had a cracked windshield.
I asked one of the Locals about it. Oh yeah, they get covered with snowdrifts all winter and people walk all over where the vehicles are, he said. Cordova, it should be noted is cut off from the interior by glaciers. Only access is by Sea or Air. There was a road over the glacier once, but since they had to rebuild it every summer due to spring run-off erosion, they quit bothering.
Any cars or trucks in or out of Cordova go by ferry.

Cordova is situated on the East end of the Prince William Sound. East by Southeast of Valdez, AK. When the tanker Exxon Valdez spilled her guts on the Sound in 1989, that killed the catchment area. I never went back.

[dagnabbitt]

This is a good thread to look through if you have not found it already.

A sampling of 1967-68 Fremont trucks in the thread all have seven digit RPO codes that started with "04", and might have looked like the below.

04D32AA LH SRT RV MIRROR
04Z52AA FOAM SEAT
04M20CJ 4 SPD TRANSMISSION
04C42AA DELUXE AIR HEATER
04D36AB NON GLARE MIRROR
04760BA HVY DTY BATT
04600AB BLACK VINYL TRIM

I'm not sure if this is helpful: for example, there are a couple distinct codes for the M20 transmission. Given that your GMC may have never had a SPID at all I am not sure how exact you want to be.

[mcca5773]

These trucks just exist all over the place. So many classic cars too. On my shelf, I’ve got a 1967 speed warning cluster from a 1967 Chevy. Donor d445f. Extra transmission and Rockwell transfer case. I grab anything I can find that is 67-68 specific.

The spring time and cracked windshields is no joke. Using gravel instead of salt on the road is part of the issue. I’ve gotten 4 chips that were able to be repaired in the last 3 months. The wife’s windshield looks like a spider web.
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