In the interest of clarifying which years had what, I'm beginning work on a timeline. The timeline will have NA above the line, and SC below, as they changed powertrains at different times. Because 99% of the interest on this site is the last 3 major generations, I'll be starting the timeline with the 80'*....for now, and maybe go back later to work on more.

Body ONLY:

The first year of the 80'* syle was 1986, right?
The next change was 1992.
1996 saw some changes, too, subtle changes. What were they (foglight spacing?)
2000 was the first year of the newest style.

After the body stuff is clarified, we'll move on to the next category. Anybody that can clarify, confirm, or correct the above info, jump on it!

How in depth do you want to get? Do you want all the little things (switch locations, rim types available, options available, etc...) or do you want to cover just the broad picture? I'll give whatever help I can from my '95 */C.

Just the major stuff. We can add the little stuff later. Am I right about the body styles so far?

The '92, '96, and '00 seem right to me. Not sure about the earlier models. I think the '96 was more smaller things like grills, tail lights, trim lines and such.

Would pictures be something you would want to put with these? Kind of like putting a name with a face.

Exactly what I was thinking......

1986 were still RWD "G" bodies!
VIN 4th & 5th Digits = Carline/Series
1987:
HX: Bonneville
HZ: Bonneville LE
1988:
HX: Bonneville LE
HY: Bonneville SSE
HZ: Bonneville SE
1989:
HX: Bonneville LE
HY: Bonneville SSE
HZ: Bonneville SE
1990:
HX: Bonneville LE
HY: Bonneville SSE
HZ: Bonneville SE
1991:
HX: Bonneville LE
HY: Bonneville SSE
HZ: Bonneville SE
1992:
HX: Bonneville SE
HY: Bonneville SSEi
HZ: Bonneville SSE
1993:
HX: Bonneville SE
HY: Bonneville SSEi
HZ: Bonneville SSE
1994:
HX: Bonneville SE
HZ: Bonneville SSE
NO SSEi that year!
1995:
HX: Bonneville SE
HZ: Bonneville SSE
NO SSEi that year
1996:
HX: Bonneville SE
HZ: Bonneville SSE/SSEi
1997:
HX: Bonneville SE
HZ: Bonneville SSE/SSEi
1998:
HX: Bonneville SE
HZ: Bonneville SSE
NO SSEi that year
1999:
HX: Bonneville SE
HZ: Bonneville SSE
NO SSEi that year
2000:
HX: Bonneville SE
HY: Bonneville SLE
HZ: Bonneville SSEi
2001:
HX: Bonneville SE
HY: Bonneville SLE
HZ: Bonneville SSEi
Sorry that'* about how far my GM Production Book goes to!

94, 95, 98, and 99 didn't have SSEi? I gotta argue. I know 94 and 95 did! Or does your data get tired this late at night?

Deathrat cracks his book of infinate wisdom again!

I know '95 did, I got one. I think it is just no data available from his source.

This straight from GM Production Options Book from GM Canada given to all Parts Employees to help identify different carlines/series from each year! Effective March 2001 from Service Parts Operations, General Motors Corporation, Engineering Department! PS: GM P/N: GMPO