1979 CHEVROLET TRANSMISSION IDENTIFICATION A SERIES ASSEMBLY CODES M15 s svn MAN JVII I2O h sein MAN Mzs a sm AT A V BZ CS CR CA I M33 3 SPD AT M3E 3 SPD AT KE WG TA TR WA B SERIES ASSEMBLY CODES M29 3 SPD AT M33 3 SPD AT A A M38 3 SPD AT cv cu TA TP TR TI F SERIES ASSEMBLY CODES M15 3SPD MAN H I M26L4SPD MAN M38 3 SFD AT I TA TP TR TI T WF M21 4 sP NIAN UH H SERIES ASSEMBLY CODES M20 4 SPD MAN I M75 5 SPD MAN I M29 3 SPD AT UM US PA PC M33 3 SPD AT M38 3 SPD AT Kn KK KA wm X SERIES ASSEMBLY CODES M15 3 SPD MAN M20 4 SPD MAN M38 3 SPD AT V TA TC TR TS T SERIES ASSEMBLY CODES MY1 A sm MAN V K Mus s 4 svn AT GM PARTS DIVISION GENERAL CORPORATl0NgCHEVROLET T0 4 8 A