- 1990–1992 Single-source
the hydraulically controlled 4L60 (the renamed THM 700-R4); matched to the Brougham by meaning only: Wikipedia's Brougham article ties the 4L60 to 1990 through 1992 but prints no code, and Wikipedia's 4L60-E article prints the 4L60 as RPO MD8 (the articles count as one source) but does not list the Brougham; shared B/C-body code, printed (as MD8) for the Chevrolet Caprice in the Caprice kit's 1992 specification page (printed model year 1992), which is sibling corroboration only; the kit's 1990 and 1991 specification pages also print MD8 but print no model year and are not cited; the Caprice kit pages are sibling corroboration only (owner rule 2026-11-05)
GM Heritage factory kit — 1992 Chevrolet Caprice, p.6.
MD8 Single-source
Also documented for BuickChevroletHummerPontiac
Documented applications
- 1993 Single-source
the hydraulically controlled 4L60 (Wikipedia's Cadillac Fleetwood article, which prints no code for it); the code is from Wikipedia's 4L60-E article, which names the 4L60 as RPO MD8 but lists the Fleetwood only for the 4L60-E years, so the code is matched to the Fleetwood by meaning; shared B-body code; corroborated by the Chevrolet Caprice kit's 1993 MVMA specification page (p.22), which prints MD8 in its power teams; GM's later lists reuse MD8 for a 4L70-E
GM Heritage factory kit — 1993 Chevrolet Caprice, p.22.
This page aggregates every documented appearance of MD8 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.