TRUCK TRANSMISSION PRODUCTION CODE EXPLANATION The truck transmission codes are located as follows THREE SPEED SAGINAW TVPE r The code is stamped on the left side of the case just below the side cover V The production code number contains the source code mode1 year and build date EXAMPLEI N H A 10 SOURCE CODE MODEL YEAR BUILD MONTH DAV CODE 5 3 Speed 1985 A Jan K Ju 10th Saginaw Type B Feb M Aug C Mar F Sept DrApr R Oct E May 5 NOV H Jun T De THREE SPEED TREMEC The identification code is located on upper left attachment ear top side The production code number contains the source code month model year and build Sequence EXAMPLE SU G H 0001 D SOURCE CODE MONTH YEAR BUILD SEQUENCE Tremec A Jan G Ju1 1985 B Feb H Aug 0 Mar J e t D Apr K Oc E May L NOV F Jun M Dec 99O GENERAL MOTORS SERVICE PARTS OPERATION LTTRUCK 52R REV 9 90 1 4 000