No Fourth, Fifth, and Sixth Gear
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
| Checks |
Causes |
| 4-5-6 Clutch Assembly |
- Inspect for damaged or broken 4-5-6 clutch piston (433) and piston seals (430-432).
- Inspect for broken or disengaged 4-5-6 backing plate retainer (442).
- Inspect for damaged or broken 4-5-6 clutch dam piston (435) and piston seals damaged, worn or delaminating.
- Inspect for broken or disengaged 4-5-6 clutch dam retainer (436).
- Inspect for sheared or stripped splines on the reaction carrier hub (438).
- Inspect for sheared or stripped splines on 3-5-rev/4-5-6 housing to turbine shaft (422).
- Inspect for loose, worn or damaged 3-5-rev/4-5-6 housing bushing.
- Inspect for broken, porous or improper surface finish or plugged oil passages of the 3-5-rev/4-5-6 housing (422).
- Inspect for failure of the input shaft thrust bearing (32).
- Inspect for damaged, stripped or sheared splines on 4-5-6 clutch plates (439-441).
- Inspect for broken or fatigued 4-5-6 clutch piston return spring (434).
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