For 1990-2009 cars

# Service Engine Soon (SES) Light On with DTCs P0716 and/or P0717, P0730, P0753, P0758, P1860, P1887 or other Misc. Transmission Trouble Codes Set (Repair Wiring at Transaxle Wiring Pass-thru Connector)

Subject: | Service Engine Soon (SES) Light On With DTCs P0716 and/or P0717, P0730, P0753, P0758, P1860, P1887, or other Miscellaneous Transmission Trouble Codes Set (Repair Wiring at Transaxle Wiring Pass-thru Connector)

Models: | 2000-2004 Buick Century, LeSabre, Park Avenue, Regal

| 2003-2004 Buick Rendezvous

| 2000-2001 Chevrolet Lumina

| 2000-2004 Chevrolet Cavalier, Impala, Malibu, Monte Carlo, Venture

| 2004 Chevrolet Classic

| 2000-2002 Oldsmobile Intrigue

| 2000-2003 Oldsmobile Aurora

| 2000-2004 Oldsmobile Alero, Silhouette

| 2000-2004 Pontiac Bonneville, Grand Am, Grand Prix, Montana, Sunfire

| 2001-2004 Pontiac Aztek

| 2000 Toyota Cavalier

| with 4T65-E, 4T40-E or 4T45-E Transaxle (RPOs MN3, MN7, M15, M76, MN4, MN5)

This bulletin is being revised to add the 2004 model year as well as the Chevrolet Classic model. Please discard Corporate Bulletin Number 02-07-30-022A (Section 07-Transmission/Transaxle).

### Condition

Some customers may comment that the Service Engine Soon (SES) indicator is illuminated and that while the light is illuminated, transmission shifts are extremely harsh.

### Cause

These types of conditions may be caused by an intermittent connection at the transaxle 20-way connector to the wiring harness interface.

### Correction

If a DTC was recorded and the Freeze Frame and Failure Records back it up, a problem existed at one time with the wiring and/or the connectors between the transaxle and the PCM. Therefore, a thorough inspection and/or repair of the wiring harness at the transaxle 20-way connector for one or more of the following conditions may be warranted.

• | The wiring harness is stretched too tightly or other components are pressing on the connector body itself causing a downward pressure on the connector body and possible intermittent contact of the wiring terminals. Ensure proper clearance to any other components and wiring (i.e. hoses, battery cables, etc.).

• | The terminals are not fully seated into the cavity of the connector body.

• | The male terminals in the transaxle portion of the connector may be in the wrong position (i.e. bent).

• | The female terminals may be loose and are not making proper contact. Check the tension with the proper terminal tester from the GM Terminal Test Kit J 35616-A or J 35616-92. If the tension is low, replace the terminal. Do not try to re-form the terminal.

• | The crimp of the terminal to the wire may not be satisfactory (i.e. loose, over insulation, etc.).

• | The wiring connector is not properly seated and locked in position. Ensure proper seating of the connector into the transaxle and that the connector is properly locked in place.

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
N6630 | Wiring and/or Connector (Transaxle) - Repair | 0.5 hr