TRUCK TRANSMISSION PRODUCTION CODE EXPLANATION V THM 400 475 TRANSMISSION I D NAMEPLATE 6 REAR WHEEL DRIVE 1 Julian Date 7 Model Year l 86 FSA 20 25 I A 85 1985 V 86 1986 87 1987 V A 88 1988 etc Serial Number l Model LOCATION PASSENGER SIDE BY GOVERNOR COVER NEAR THE REAR OF THE TRANSMISSION A THM 700 R4 TRANSMISSION IDENTIFICATION INFORMATION REAR WHEEL DRIVE A Model Year I A 5 1985 6 1986 7 1987 Additional ident for 8 1988 some 1986 models only Julian Date I 9 1989 or Day of the Year A THM 700 RH 6 YK M Y 00248949 267 A A Toledo Model Shift Built Serial Number A B First Shift C H Second Shift LOCATION PASSENGER SIDE DIRECTLY ABOVE THE OIL PAN NEAR THE REAR OF THE TRANSMISSION 1991 GENERAL MOTORSSERVICE PARTS 0PERATIONS LT TRUCK 52M V 1 91 4 5 4 000