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4T65E Transmission (MN3,MN7) Intermittent Hesitation, Cuts Out, Speedo Flux, Harsh Shift, and Intermittent Neutral - keywords chuggle out output shudder surge VSS

Subject:4T65E Transmission (MN3, MN7) Intermittent Hesitation, Cuts Out, Speedo Flux, Harsh Shift, and Intermittent Neutral

Models:2004-2005 Chevrolet Impala
2004-2005 Chevrolet Monte Carlo



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

Condition/Concern:

Customer may comment that the speedo intermittently drops or fluctuates or engine appears to miss or harsh shift. Diagnosis may not indicate any codes stored or any abnormal condition.

Recommendation/Instructions:

Inspect the routing of the power steering hose near the transmission output speed sensor connector. The power steering hose may be contacting the output speed sensor connector causing an interruption or open in the output speed sensor circuit. Carefully reposition the hose to prevent contact with the output speed sensor connector.

Please follow this diagnosis 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.