GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

2/4 Synchronizer Blocking Ring Insert Width

9.5-9.7 mm

0.374-0.382 in

2/4 Synchronizer Blocking Ring to Gear Clearance

1.5 mm - Standard

0.8 mm - Minimum

0.059 in - Standard

0.031 in - Minimum

2/4 Synchronizer Blocking Ring to Insert Clearance

3.86-4.14 mm - Standard

4.9 mm - Maximum

0.152-0.163 in - Standard

0.193 in - Maximum

2/4 Synchronizer Insert to Synchronizer Hub Clearance

0.01-0.19 mm - Standard

0.3 mm - Maximum

0.0004-0.0075 in - Standard

0.012 in - Maximum

2/4 Wheel Drive Shift Fork

9.60-9.85 mm - Standard

9.0 mm - Minimum

0.378-0.388 in - Standard

0.354 in - Minimum

Detent Spring Free Length

23.4 mm - Standard

23.1 mm - Minimum

0.92 in - Standard

0.91 in - Minimum

Detent Spring Tension at Compressed Height

7.5-8.5 kg at 18.7 mm

16.5-18.7 lb at 0.736 in

High/Low Shift Fork

7.60-7.85 mm - Standard

7.0 mm - Minimum

0.299-0.309 in - Standard

0.276 in - Minimum

Inner Range Shift Detent Spring Free Length

26.6 mm - Standard

25.6 mm - Minimum

1.05 in - Standard

1.01 in - Minimum

Inner Range Shift Detent Spring Tension at Compressed Height

3.3-4.3 kg @ 18.7 mm

7.3-9.5 lb @ 0.736 in