GM Service Manual Online
For 1990-2009 cars

Spring

Free Length mm (in)

Coil Outer Diameter mm (in)

Color

Cooler bypass valve

19.90 (0.7335)

11.0 (0.433)

None

Secondary regulator valve

43.60 (1.7165)

10.9 (0.429)

None

Lock-up signal valve

31.43 (1.2374)

8.0 (0.315)

Light Blue

2-3 shift valve

27.74 (1.0921)

8.3 (0.327)

None

Detent regulator valve

30.64 1.2063)

7.9 (0.311)

Blue

1-2 shift valve

27.17 (1.0697)

6.4 (0.252)

Yellow

Primary regulator valve

66.65 (2.6240)

8.3 (0.327)

Purple

Damping check valve

11.20 (0.4409)

6.4 (0.252)

None