Sierra 1500 4WD V8-6.0L VIN U (2006)
Fluid - A/T: Service and Repair
4L80-E/4L85-E - Automatic Transmission
Automatic Transmission Fluid/Filter Replacement
Automatic Transmission Fluid/Filter Replacement
Removal Procedure
1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Place a drain pan under the transmission oil pan.
3. Remove the oil pan drain plug, if equipped.
4. Allow the transmission fluid to drain completely.
5. Apply a small amount of sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the treads of the drain plug, if equipped.
Notice: Refer to Fastener Notice in Service Precautions.
6. Install the oil pan drain plug.
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Tighten the oil pan drain plug to 18 Nm (13 ft. lbs.).
7. Remove the drain pan from under the transmission oil pan.
8. Support the transmission with a transmission jack.
9. Remove the transmission mount nuts.
10. Remove the transmission support bolts and nuts.
11. Remove the transmission support side bracket bolts and bracket.
12. Remove the transmission support.