Reference Details
- Common issue
- Interior color or upholstery appearance can be changed; the trim number narrows the original trim claim but does not replace VIN/body/model and drivetrain verification.
- Confidence
- documented
- Correct value
- Team Buick's 1968 trim-number table lists GS 400 vinyl trim codes: Black 158/178, Blue 171, Green 170, Buckskin 173, and White 152/172.
- Where to check
- Compare the body/data-plate trim number against the GS 400 trim-number table; use this as trim evidence, not as standalone proof of GS 400 identity.