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Automatic Transmission Overhaul - 4L60-E: Identification: Notes

Vehicle model is identified by 4th character (cars), or 5th character (trucks) of Vehicle Identification Number (VIN). VIN is stamped on metal pad on top of left end of instrument panel, near windshield. See MODEL IDENTIFICATION  table.

The Hydra-Matic 4L60-E transmission can be identified by a letter code contained in identification number. Identification number is stamped on transmission case above oil pan rail on right rear side, or to rear of oil pan. See Fig 1 . Identification number contains information which must be used when ordering replacement parts. Transmission RPO code is M30.

MODEL IDENTIFICATION

Body/Series (1) Model
"C" Sierra, Silverado, Suburban, Tahoe, Yukon & Yukon XL
"F" Camaro & Firebird
"G" Chevy Express & Savana
"K" Sierra, Silverado, Suburban, Tahoe, Yukon, Yukon XL & AWD Escalade
"L" AWD Astro & Safari
"M" 2WD Astro & Safari
"S" 2WD Blazer, Envoy, Jimmy, Sonoma & S10 Pickup
"T" 4WD Blazer, Bravada, Envoy, Jimmy, Sonoma & S10 Pickup
"Y" Corvette
(1) Vehicle body/series code is 4th character of VIN for cars or 5th character of VIN for trucks.
Fig 1: Locating Transmission Identification Number
G99G03600Courtesy of GENERAL MOTORS CORP.