The engine type designation 3 alpha clmnolenl will n pear in the lnlldwin ann 6 Cyl Stamped an crankeuo riqln Imnd side oIIenpin mr ul distghugnr T15 I Cyl Stamped an mp from riqln hand bank ol cylinder and em clan no upper and ol pad Mark N Stamped on lop right hand bank ol cylinder and case close to lower end nl d va 1979 LIGHT DU I Y TRUCK ENGINE CODE IDENTIFICATION e e 0 e I 499 9 Aa A I v V4 vg 4 Y0 E FEDERAL CALIFORNIA men A mu z cw TA TA TAX TAD TAW G10 TAS TA TDW TAD TAT Q LEQW IKE TA TM 1 1 TA TM TAD TM 11 IE TAS TM TA TDU TAT j E1 TAS TM TDU TAT 11 PW THB THA THA THA Lzsmzl THB THH A THA THH THA THH THA THH THA T H THA THH THA THH THA THH THA THH THA THA THH THA THH THA WT WST WT M TA I LGWE T UTC IKII T UTS TVR 2 HYS TVR WR cw TJ B MH TBQTQMF TBT Tan TBS THH TMC EI T TBH TM HEI T I E TBTFTTJT TBBT TBD TBITITTBY TBU TBW TFT TBF 4 TBS TFT TRS Kr cm Tac TJT TBBT TBD TBR Tsv TBU TBW TRR TFT TF E TBM TBR TBL TBJ TFJ TFM TBZJISFL TRZ Lsslsso m TQ TBB TBD QQ Taw Tau TFT TFZ TFx TFz TFR TF TFZ TF czw 3 TFT TFs TFT TFs TBM Ts TFM TF m Ts T w TBJ TFU TFJ TFW TFK TFU TFW TTU TFT TFs TFT TFS TFT T s E U fipz TW TTX NET I TW TTX U f Fz TTT TTX E TT 11Y lil TTM TM I TTMTLT 111 W W N T F Y TT XXX Tw TT A N Mm H I W I IEE TW 1 Tw 1 T LU 1 cio Tan THR Taz Tan TRR TRR TRR LFWW C2 Tau TRS E TRU TRS TRZ TRS TRU TRZ 330 TRU TRT TRT TRU TRT IE TRW T RX 1 TRW TRX 1 TRWT THX 1 i BTE i W W W W K N0 TE This chart includes all enyine coda effective with start ol graduation 1979 However coda additions and deletions may be noted periodically throughout the model yeah WAREHOU ING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION LT TRUCK 52A REV 1 84 zs