For 1990-2009 cars

# 4T65E Whine Noise Park/Neutral - keywords bearing drive sprocket support

Subject: | 4T65E Whine Noise Park/Neutral

Models: | All 2000-2007 Passenger Vehicles with 4T65E Transmission

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

### Condition/Concern:

The vehicle may exhibit a whine Noise P/N, gone when in Drive when not moving.

### Recommendation/Instructions:

The suggested diagnosis is to shift to drive, apply brake and raise engine RPM. Noise should diminish (may not go away).

If noise is diminished or eliminated, suspect drive or driven sprocket support bearings, or gear bearing (most common is drive sprocket support bearing).

Visually Inspect Drive Sprocket Support Needle bearing for spalled needle roller.

Replace Drive Sprocket Support item #522 (includes 521/523).

Follow appropriate SI repair steps to access drive and driven sprocket supports for inspection if attached condition is found replace appropriate parts.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.