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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    MX0 Factory-verified

    GMC · Regular Production Option

    Transmission, 4 speed automatic, overdrive

    Years 1983–91, 2016–17 Models 9 Factory citations 51
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    Also described as Transmission, 6 speed automatic

    Also documented for BuickCadillacChevroletOldsmobilePontiacSaturn

    Documented applications

    Caballero — G-body (1983–1987)
    • 1985–1986 Factory-verified

      The 1985 and 1986 order guides print MXO (letter O); the zero form is the code; the 1987 order guide prints the 4 speed automatic without its code; shared G-body platform code; cited from the joint El Camino/Caballero pages of the Chevrolet El Camino kits

      GM Heritage factory kit — 1985 Chevrolet El Camino, p.11.
      GM Heritage factory kit — 1986 Chevrolet El Camino, p.4.
      GM Heritage factory kit — 1986 Chevrolet El Camino, p.5.
    Jimmy (full-size) — Square body (1983–1991)
    • 1983–1986, 1990, 1991 Single-source

      required with the LH6 diesel; the 1990 powertrain page names the 700R4 gearbox; the kit pages print MXO (the 1990 power team chart also prints MX0); shared square-body platform code; cited from the Chevrolet Blazer kit; 1991 rests on the Chevrolet-only 1991 Blazer book, so the row is single-source

      GM Heritage factory kit — 1983 Chevrolet Blazer, p.4.
      GM Heritage factory kit — 1984 Chevrolet Blazer RV Full Size, p.16.
      GM Heritage factory kit — 1985 Chevrolet Blazer RV Full Size, p.6.
      GM Heritage factory kit — 1986 Chevrolet Blazer, p.10.
      GM Heritage factory kit — 1990 Chevrolet Blazer, p.6.
      GM Heritage factory kit — 1991 Chevrolet Blazer, p.16.
    Jimmy — first generation (1983–1994)
    • 1983–1989 Factory-verified

      the 1983–1988 pages print MXO; shared S/T platform code; cited from the joint S-10/15 Blazer/Jimmy pages of the S-10 Blazer kit

      GM Heritage factory kit — 1983 Chevrolet S 10 Blazer, p.6.
      GM Heritage factory kit — 1984 Chevrolet S 10 Blazer, p.4.
      GM Heritage factory kit — 1985 Chevrolet S 10 Blazer, p.10.
      GM Heritage factory kit — 1986 Chevrolet S 10 Blazer, p.6.
      GM Heritage factory kit — 1987 Chevrolet S 10 Blazer, p.42.
      GM Heritage factory kit — 1988 Chevrolet S 10 Blazer, p.8.
      GM Heritage factory kit — 1989 Chevrolet Blazer, p.12.
    Safari — First generation (1985–1994)
    • 1986–1988, 1990 Factory-verified

      4 speed automatic with overdrive; the 1986, 1987, 1988 and 1990 pages print MXO; shared M-body code; cited from the joint Astro/Safari pages of the Astro kits.

      GM Heritage factory kit — 1986 Chevrolet Astro Van, p.10.
      GM Heritage factory kit — 1987 Chevrolet Astro Van, p.12.
      GM Heritage factory kit — 1988 Chevrolet Astro Van, p.4.
      GM Heritage factory kit — 1990 Chevrolet Astro Van, p.8.
    Sierra — Square body (1983–1991)
    • 1983–1987 Factory-verified

      shared platform code; cited from the square-body C/K pickup kits; the kit pages also print MXO

      GM Heritage factory kit — 1983 Chevrolet Truck, p.13.
      GM Heritage factory kit — 1984 Chevrolet Truck, p.22.
      GM Heritage factory kit — 1985 Chevrolet Truck, p.21.
      GM Heritage factory kit — 1986 Chevrolet Truck, p.20.
      GM Heritage factory kit — 1987 Chevrolet Truck, p.37.
    Sonoma — first generation (1982–1993)
    • 1983–1990 Factory-verified

      the 1983–1990 pages print MXO; shared S-series code; cited from the joint S-10/S-15 pages of the S-10 kits

      GM Heritage factory kit — 1983 Chevrolet S 10, p.33.
      GM Heritage factory kit — 1984 Chevrolet S 10, p.8.
      GM Heritage factory kit — 1985 Chevrolet S 10, p.16.
      GM Heritage factory kit — 1986 Chevrolet S 10, p.8.
      GM Heritage factory kit — 1987 Chevrolet S 10, p.16.
      GM Heritage factory kit — 1988 Chevrolet S 10, p.30.
      GM Heritage factory kit — 1989 Chevrolet S 10, p.18.
      GM Heritage factory kit — 1990 Chevrolet S 10, p.11.
    Suburban — Square body (1983–1991)
    • 1983–1991 Single-source

      standard on the C10/R10 series; 1988 from the power team chart and 1990 from the cooling page; the kit pages print MXO; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source

      GM Heritage factory kit — 1983 Chevrolet Suburban, p.13.
      GM Heritage factory kit — 1984 Chevrolet Suburban, p.16.
      GM Heritage factory kit — 1985 Chevrolet Suburban, p.16.
      GM Heritage factory kit — 1986 Chevrolet Suburban, p.15.
      GM Heritage factory kit — 1987 Chevrolet Suburban, p.22.
      GM Heritage factory kit — 1988 Chevrolet Suburban, p.9.
      GM Heritage factory kit — 1989 Chevrolet Suburban, p.17.
      GM Heritage factory kit — 1990 Chevrolet Suburban, p.16.
      GM Heritage factory kit — 1991 Chevrolet Suburban, p.19.
    Vandura and Rally — Second generation G-series (1983–1996)
    • 1983, 1984, 1986–1990 Factory-verified

      the 1986 and 1989 pages print MXO; shared G-van platform code; cited from the Chevrolet G-Van kit

      GM Heritage factory kit — 1983 Chevrolet Vandura, p.6.
      GM Heritage factory kit — 1984 Chevrolet G Van, p.8.
      GM Heritage factory kit — 1986 Chevrolet G Van, p.21.
      GM Heritage factory kit — 1987 Chevrolet G Van, p.14.
      GM Heritage factory kit — 1988 Chevrolet Vandura, p.9.
      GM Heritage factory kit — 1989 Chevrolet G Van, p.17.
      GM Heritage factory kit — 1990 Chevrolet G Van, p.19.

    Related codes · mentioned in these notes

    LH6

    This page aggregates every documented appearance of MX0 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.