Engine - Vibration

BULLETIN NUMBER:
SB00-01-S003

ISSUE DATE:
MARCH 2000

GROUP:
ENGINE

SUBJECT:
1998-2000 RODEO (UE) V.6: ENGINE VIBRATION

VEHICLES AFFECTED:
Some 1998-2000 Rodeo (UE) V-6 models,
VIN breakpoint: Y4300787/Y4400051.

SERVICE INFORMATION:

Condition:
On Some affected vehicles, the engine mounts may not isolate engine vibration.

NOTE:
Depending on road conditions, some vibration that is felt through the steering column, floor, or seat is normal when the vehicle is driven at high speeds.

Correction:
To correct this condition, the procedure summarized below must be followed:

1. Engine Re-Alignment.

2. Replacement of Motor Mount Cover.

SERVICE PROCEDURE

ENGINE RE-ALIGNMENT

1. Prepare Vehicle on the hoist.

2. Raise the Vehicle on the hoist.








3. Loosen two bolts located on the transmission crossmember (Figure 1 & 2).

Use a pry bar and move the engine/transmission assembly forward.

5. While pushing the engine/transmission assembly forward, tighten the two Transmission Cross-member bolts that were loosened.

6. Lower the vehicle and start the engine to test for any vibration.

NOTE:
If the vibration is still present, then replace the motor mount cover using the following procedure.

REPLACE MOTOR MOUNT COVER

1. Record the radio settings.

2. Disconnect the negative battery cable.

3. Lift the vehicle and remove the left front wheel.

4. Remove the right front wheel.

5. Lift the rubber cover up from inside right front wheel well.








6. Remove front, skid plate (4x4 models only).








7. Remove crank angle sensor (Figure 5 & 6).





8. Remove (4) motor mount frame bolts (2-left, 2-right) (Figure 7).





9. Remove lower motor mount bolts on right side through wheel well opening (Figure 8).





10. Remove transmission line brackets from right side of engine (Figure 9 - 12).

NOTE:
4x2 models have 3 brackets & 4x4 models have 4 brackets.








11. Lift engine slightly using portable lift. (Figure 13 & 14)

NOTE:
On 4x4 models, lift from the top of engine.

12. Remove right side upper motor mount bolts through the opening inside the wheel well





13. Remove two motor mount retaining bolts (it is necessary to turn the motor mount and bracket sideways while still in the engine compartment in order to gain access to the bolts) and remove motor mount and cover from the vehicle. (Figure 15 & 16)

14. Install new cover on the motor mount and slip it back into the engine compartment through the wheel well opening. Install mounting bracket to motor mount (Torque 37 lbs. ft.) and install assembly back onto engine.

15. Lower engine into place, align holes in motor mounts with frame and install bolts.

16. Tighten bolts (Torque 30 lbs. Ft.) to frame.

17. Install Crank Angle Sensor and attach harness.

18. Install transmission fluid line brackets.

19. Install rubber dirt shield in wheel well.

20. Install front skid plate.

21. Install front wheels.

22. Lower vehicle from lift.

23. Reconnect battery and set radio presets.





PARTS INFORMATION

WARRANTY CLAIM INFORMATION

Use the following New labor operation:





Labor Time includes administrative time allowance.

* Claim Labor Operation # 010603 only if replacement of engine mount cover was required to complete the repair.