Transmission slipping

DENNIS DUMANCAS

MEMBER
2005 CHEVROLET EQUINOX
3.4L
6 CYL
180,000 MILES

How to remove the transmission valve body?
The transmission slips in all forward gears on pick up. After it is fine but, seems like it is running in fifth gear only. Also started to make a slight noise only when driving a humming or buzzing noise very quiet but I can hear it.
Changed fluids two times added Lucas transmission treatment. Still the same.

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning.

Below is the procedure with some pictures.

Very rarely the valve body is the issue for this issue.

Roy

Removal Procedure:

1. Important: Place the transaxle in neutral (N).

Remove the control valve body cover.

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2. Disconnect the wiring harness connectors (1-8).

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3. Remove the fluid temperature sensor bolt (31).
4. Remove the fluid temperature sensor clamp (49).
5. Remove the fluid temperature sensor (36) and the O-ring (32) from the control valve body.

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6. Remove the wiring harness (33) from the automatic transaxle wiring harness clip.
7. With a twisting motion remove the complete wiring harness assembly.

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8. Remove the 2 control valve body bolts/screws (31), control valve body fluid passage cover (37) and gasket (38).

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9. Remove the 6 control valve body mounting bolts/screws (1-6).

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10. While holding the control valve body assembly, disconnect the manual shift detent lever assembly (710) from the manual valve link (336).
11. Move the detent lever assembly clockwise for ease of removing the manual valve.
12. Remove the control valve body assembly (39).

Images (Click to make bigger)