6T70/75 Automatic Transmission - Performance Concerns, Check Engine Light On, DTCs P0716, P0741, P0776, P0777, P0796, P0797, P0843, P0873, P0878, P0990, P2714, P2723, P2724 Set (Reprogram TCM)
| Subject: | 6T70/75 Automatic Transmission -- Performance Concerns, Check Engine Light On, DTCs P0716, P0741, P0776, P0777, P0796, P0797, P0843, P0873, P0878, P0990, P2714, P2723, P2724 Set (Reprogram TCM) |
| Models: | 2007 Pontiac G6 with 6T70 Automatic Transmission (RPO MH2) and Built Prior to 01/26/2007 |
| 2007 Saturn AURA with 6T70 Automatic Transmission (RPO MH2) and Built Prior to 01/09/2007 |
| Attention: | Use GMVIS to determine the vehicle build date. |
This bulletin is being revised to remove the Acadia and OUTLOOK from the models. Please discard Corporate Bulletin Number 07-07-30-004 (Section 07 -- Transmission/Transaxle).
Condition
Some customers may comment on a check engine light and transmission performance issues with one of the following DTC codes set.
DTC Code | Description |
|---|---|
P0716 | Input Speed Sensor Performance |
P0741 | Torque Converter Clutch (TCC) System -- Stuck Off |
P0776 | Pressure Control (PC) Solenoid 2 (C35R/C3/SOL B) -- Stuck Off |
P0777 | Pressure Control (PC) Solenoid 2 (C35R/C3/SOL B) -- Stuck On |
P0796 | Pressure Control (PC) Solenoid 3 (C456/C2/SOL C) -- Stuck Off |
P0797 | Pressure Control (PC) Solenoid 3 (C456/C2/SOL C) -- Stuck On |
P0843 | Transmission Fluid Pressure (TFP) Sensor Circuit High Voltage |
P0873 | Transmission Fluid Pressure (TFP) Switch 3 Circuit High Voltage |
P0878 | Transmission Fluid Pressure (TFP) Switch 4 Circuit High Voltage |
P0990 | Transmission Fluid Pressure (TFP) Switch 5 Circuit High Voltage |
P2714 | Pressure Control (PC) Solenoid 4 (CB26/C4/SOL D) -- Stuck Off |
P2723 | Pressure Control (PC) Solenoid 5 (C1234/C1/SOL E) -- Stuck Off |
P2724 | Pressure Control (PC) Solenoid 5 (C1234/C1/SOL E) -- Stuck On |
Cause
The cause of this condition may be due to the TCM calibration parameters being too sensitive, allowing the code to inadvertently set.
Correction
Important: SI information has changed and the valve clean procedure no longer requires the transmission fluid to be changed.
Prior to making any repairs, perform the valve cleaning procedure using the Tech 2® special test function and reprogram the TCM with an updated calibration. This new service calibration is available on TIS2WEB. Refer to Service Programming System (SPS) using the appropriate SI procedures. If you cannot access the calibration, call the Techline Customer Support Center at 1-800-828-6860 (English) or 1-800-503-3222 (French) and it will be provided. As always, make sure your Tech 2® is updated with the latest software version.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
K5364 | Transmission Control Module Reprogramming with SPS | 0.4 hr |
Add | Diagnosis Time | 0.0-0.3 hr |
