TRUCK TRANSMISSION PRODUCTION CODE EXPLANATION Continued MUNCIE TRUCK 4 SPEED wi Stamped on the rear face oF the transmission case below the rear retainer The production code number contains the source code mode1 year and build date EXAMPLE N H A IO SOURCE CODE MODEL YEAR BUILD MONTH DAV CODE N 4 Speed 1985 A Jan K Jul 10th Muncie B Feb M Aug CH465 C MaF P SeEt D ApF R Oc E May S NOV H Jun T De 350 MODEL TURBO HVDRA MATIC TRANSMISSION The Rrcductlon code consists of the source code followed by the model year mont date and shift produced EXAMPLE B H K 05 D SOURCE CODE MODEL YEAR MONTH CODE DAY CODE SHIFT CODE y B Parma 1985 A Jan 5th D lst Shift v Toledo B Feb N 2nd Shift J GM of Canada O Mar D Apr E May H Jun K Jul M Aug P seEt R Oc 5 NOV T Dei ghe identiFicaticn number is stamped on the right side of the transmission oil i 1 1990 GENEHALMOTORSSERVICE PARTS OPERAT ONS LTTRUCK 52R 4 000 4 2 REV 9 90