GM Service Manual Online
For 1990-2009 cars only

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