Flex Plate: Service and Repair

Automatic Transmission Flex Plate Replacement

Removal Procedure





1. Remove the automatic transmission, if equipped. Refer to Transmission Replacement Transmission Replacement for the 4L60-E transmission or Transmission Replacement Transmission Replacement for the 6L45/6L50/6L80/6L90 transmission.

Note:
Note the position and direction of the engine flywheel before removal.

2. Remove the engine flywheel bolts.

3. Remove the automatic transmission engine flywheel.

4. Clean and inspect the engine flywheel.

5. Install 2 M11x1.5 mm bolts to the threaded holes of the spacer, if applicable.

6. Rotate the bolts clockwise to remove the spacer.





7. Remove the spacer from the rear of the crankshaft, if applicable.

Installation Procedure

Note:

* The flywheel does not use a locating pin for alignment and will not initially seat against the crankshaft flange or spacer (if applicable), but will be pulled onto the crankshaft by the engine flywheel bolts. This procedure requires a three stage tightening process.

* Certain applications (4.8L manual transmissions or all 6.0L) require a spacer and longer bolts for proper flywheel position.





1. Install the spacer (if applicable) onto the rear of the crankshaft.





2. Install the automatic transmission engine flywheel to the crankshaft.

Note:
Longer flywheel bolts must be used on applications using a flywheel spacer.

3. Apply threadlock to the threads of the flywheel bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers Adhesives, Fluids, Lubricants, and Sealers for the correct part number.





Caution:
Refer to Fastener Caution Fastener Caution.

4. Install the engine flywheel bolts.

1. Tighten the engine flywheel bolts a first pass in sequence to 20 Nm (15 lb ft).

2. Tighten the engine flywheel bolts a second pass in sequence to 50 Nm (37 lb ft).

3. Tighten the engine flywheel bolts a final pass in sequence to 100 Nm (74 lb ft).

5. Install the automatic transmission. Refer to Transmission Replacement Transmission Replacement for the 4L60-E transmission or Transmission Replacement Transmission Replacement for the 6L45/6L50/6L80/6L90 transmission.