GM Service Manual Online
For 1990-2009 cars only

Table A

Transmission Model

6ACW

6AFW

6ASW

6HBW

6BSW

Vehicle Series

C,H

W

C,H

W

N

Engine Displacement

3.8l

3.1L

3.8L

3.8L

3.1L

Engine RPO Code

L36

L82

L36

L36

L82

Engine VIN Code

K

M

K

K

M

Overall Axle Ratio

3.06

3.33

2.84

3.06

2.93

Final Drive Ratio

3.06

3.33

2.84

3.06

3.29

Drive/Driven Sprocket Teeth

35/35

35/35

35/35

35/35

37/33

VSS Rotor Teeth

30

30

30

30

30

Final Drive Assembly

STD

STD

STD

STD

FP

Output Shaft

STD

STD

STD

STD

STD

Torque Converter K-factor

163

180

122

163

140

Converter Clutch

TCC

TCC

TCC

TCC

TCC

Case Side Cover Pan

STEEL

SSC

STEEL

SSC

SSC

SSC Mount Bolt Pattern

N/A

4 BOLT

N/A

4 BOLT

6 BOLT

Transmission Vent Assembly

CAP

CAP

CAP

CAP

TUBE

Temperature Sensor

391

391

391

391

391

1-2 Accumulator Valve (Primary)

STD

INVERT

STD

STD

STD

1-2 Accumulator Piston

136B

136C

136B

136B

136A

1-2 Accumulator Spring(s)

139A,D

139A,C

139A,D

139A,D

139A

2-3 Accumulator Piston

136A

136A

136A

136A

136A

2-3 Accumulator Spring(s)

138A,B

138A,B

138A,B

138A,B

138A,B

3-4 Accumulator Spring(s)

423,4,5

423,4

423,4,5

423,4,5

423,4

Notes:

  • FP = Fine Pitch
  • HD = Heavy Duty
  • N/A = Not Available
  • SSC = Case Aluminum Structural Side Cover Pan
  • STD = Standard
  • STEEL = Stamped Steel Side Cover Pan
  • VSS = Vehicle Speed Sensor
  • K-factor = Torque converter numeric rating (combines stall speed and torque multiplication ratings)

This chart does not identify all unique build items and this chart may be subject to change.

Table B

Transmission Model

6BXW

6CAW

6CTW

6CUW

6PAW

Vehicle Series

H

G

G

N

A

Engine Displacement

3.8L

3.8L

3.8L

2.4L

3.1L

Engine RPO Code

L36

L36

L67

LD9

L82

Engine VIN Code

K

K

1

T

M

Overall Axle Ratio

3.06

3.05

2.93

3.42

2.97

Final Drive Ratio

3.06

3.05

3.29

3.05

3.33

Drive/Driven Sprocket Teeth

35/35

35/35

37/33

33/37

37/33

VSS Rotor Teeth

30

30

30

30

30

Final Drive Assembly

STD

FP

FP,HD

FP

STD

Output Shaft

STD

STD

LONG

STD

STD

Torque Converter K-factor

163

163

163

203

140

Converter Clutch

TCC

TCC

TCC

TCC

TCC

Case Side Cover Pan

STEEL

SSC

SSC

SSC

STEEL

SSC Mount Bolt Pattern

N/A

6 BOLT

6 BOLT

6 BOLT

N/A

Transmission Vent Assembly

CAP

CAP

CAP

TUBE

CAP

Temperature Sensor

391

391

450

N/A

391

1-2 Accumulator Valve (Primary)

STD

STD

STD

STD

STD

1-2 Accumulator Piston

136B

136B

136A

136A

136B

1-2 Accumulator Spring(s)

139A,D

139A,D

139A

139A

139A,D

2-3 Accumulator Piston

136A

136A

136A

136A

136A

2-3 Accumulator Spring(s)

138A,B

138A,B

138A,B

138A,B

138A,B

3-4 Accumulator Spring(s)

423,4,5

423,4,5

423,4

423,4

423,4

Notes:

  • FP = Fine Pitch
  • HD = Heavy Duty
  • N/A = Not Available
  • SSC = Case Aluminum Structural Side Cover Pan
  • STD = Standard
  • STEEL = Stamped Steel Side Cover Pan
  • VSS = Vehicle Speed Sensor
  • K-factor = Torque converter numeric rating (combines stall speed and torque multiplication ratings)

This chart does not identify all unique build items and this chart may be subject to change.

Table C

Transmission Model

6PBW

6PKW

6WFW

6YLW

6YRW

Vehicle Series

W

U

L

C,H

H

Engine Displacement

3.4L

3.4L

3.1L

3.8L

3.8L

Engine RPO Code

LQ1

LA1

L82

L67

L67

Engine VIN Code

X

E

M

1

1

Overall Axle Ratio

3.43

3.29

2.93

2.93

2.93

Final Drive Ratio

3.06

3.29

3.29

3.29

3.29

Drive/Driven Sprocket Teeth

33/37

35/35

37/33

37/33

37/33

VSS Rotor Teeth

30

30

30

30

30

Final Drive Assembly

STD

FP

FP

FP,HD

FP,HD

Output Shaft

STD

STD

STD

LONG

LONG

Torque Converter K-factor

177

163

140

163

163

Converter Clutch

ECCC

TCC

TCC

TCC

TCC

Case Side Cover Pan

SSC

STEEL

SSC

STEEL

STEEL

SSC Mount Bolt Pattern

4 BOLT

4 BOLT

6 BOLT

N/A

N/A

Transmission Vent Assembly

CAP

CAP

TUBE

CAP

CAP

Temperature Sensor

391

391

391

450

450

1-2 Accumulator Valve (Primary)

STD

STD

STD

STD

STD

1-2 Accumulator Piston

136B

136A

136A

136A

136A

1-2 Accumulator Spring(s)

139A,D

139A

139A

139A

139A

2-3 Accumulator Piston

136A

136A

136A

136A

136A

2-3 Accumulator Spring(s)

138A,B

138A,B

138A,B

138A,B

138A,B

3-4 Accumulator Spring(s)

423,4

423,4

423,4

423,4

423,4

Notes:

  • FP = Fine Pitch
  • HD = Heavy Duty
  • N/A = Not Available
  • SSC = Case Aluminum Structural Side Cover Pan
  • STD = Standard
  • STEEL = Stamped Steel Side Cover Pan
  • VSS = Vehicle Speed Sensor
  • K-factor = Torque converter numeric rating (combines stall speed and torque multiplication ratings)

This chart does not identify all unique build items and this chart may be subject to change.