2 21 2 TON SPEEDOMETER GEAR NUMBER CHART TWO SPEED AXLE 55 5 6 4 SPD 6 35 3689178 3689178 136891781 55 5 6 4 SPD 5 32 3689121 3689179 23689178 3689121 56 5 6 7 8 4 SPD 6 35 3689178 3689178 36891781 I 56 9 10 exe I I I I TDM SBC 5 SPD 6 39 3732001 3732001 I 3731999 56 58 5 6 7 8 4 SPD 5 32 3689121 3689179 3689179 I3689178 3689179 3689178 I3689178 56 58 5 6 7 8 5 SPD 5 32 3731994 3731995 3731995 3731995 I 57 7 8 exc TDM 4 SPD 6 39 3689179 3689121 3689179 3689179 3689178 3689179 I 57 7 8 exc TDM 5 SPD 6 39 3731995 3731995 3731995 3731995 57 58 9 10 I exc TDM 5 SPD 6 39 3731995 3731995 3731995 3731995 57 58 9 10 I I exc TDM H D 5 SPD 6 39 3732001 3732001 I 3732001 3731999 3732001 3731999 58 5 6 7 8 4 SPD 6 39 3689121 3689179 3689121 3689179 I3689179 I3689179 I 58 7 8 exc TDM 4 SPD 6 43 3689121 3689121 3689121 I 3689121 3689121 I3689121 58 5 6 7 8 New I I I Process I I I I 5 SPD IB 39 3731994 3731995 3731994 3731995 3731995 I3731995 I 58 9 10 New I I I I I I exc TDM Process I 5 5p 6 43 I I I I 3731995 58 9 10 I I exe TDM 8 0 5 sP0 6 43 I I 3732001 59 5 6 7 8 4 SPD I5 32 3760345 3760345 3760345 3760344 I 3760344 I3760344 59 5 6 7 8 4 SPD 639 3760346 I3760345 3760345 3760344 I3760345 I3760344 I 59 7 8 exc TDM 4 SPD 6 43 I3760347 3760347 3760346 I 3760347 I3760346 I 59 5 6 7 8 New I I I I Process I I 5 SPD I5 32 3760349 13760349 3760349 3760348 I3760348 3760348 59 5 6 7 8 New I I Process I I 5 SPD 15 39 3760350 I3760349 3760349 31760348 I3760349 I3760348 I 59 7 8 exc TDM New I I I Process I 5 SPD 6 43 3760351 3760351 I3760350 I 3760351 3760350 59 7 8 exc TDM Clark I I I 5 SPD 5 32 3760353 3760353 3760353 3760352 3760352 3760352 59 7 8 exc TDM Clark I I 5 SPD Ei 39 3760354 I3760353 3760353 I 3760352 3760353 3760352 59 7 8 exc TDM Clark I 5 SPD Ei 43 3760355 3760355 3760354 3760355 3760354 T 197 1 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORAT ON P A 315 t REV 6 71 4 73 4 337 4 337