| Subject: | Information on Control Solenoid Valve and Transmission Control Solenoid Module Assembly Cleaning Procedure for Various Six-Speed HYDRA-MATIC® Automatic Transmissions when MIL/DTCs Set |
| Models: | 2008 Buick Enclave |
| 2006-2007 Cadillac STS-V, XLR-V |
| 2007 Cadillac Escalade, Escalade ESV, Escalade EXT, SRX, STS, XLR |
| 2006-2007 Chevrolet Corvette |
| 2007 GMC Acadia, Sierra, Yukon Denali, Yukon XL Denali |
| 2007 Saturn AURA, OUTLOOK |
| with Six Speed HYDRA-MATIC® 6L50, 6L80, 6L90, 6T70 or 6T75 Automatic Transmission (RPOs MYB, MYC, MYD, MH2, MH6, MY9) |
SI diagnostics for many of the performance DTCs that can be set by these transmissions direct that control solenoid valve and transmission control solenoid module assembly cleaning should be performed as part of circuit/system testing.
Perform Bulletin Cleaning Procedure For The Following DTCs
Perform the Control Solenoid Valve and Transmission Control Module Assembly Cleaning in an attempt to clean or free up a potential sticking valve of dirt or debris for the following DTCs :
| • | DTC P0741: Torque Converter Clutch (TCC) - Stuck Off |
| • | DTC P0742: Torque Converter Clutch (TCC) - Stuck On |
| • | DTC P0751: Shift Solenoid (SS) 1 Valve Performance - Stuck Off |
| • | DTC P0752: Shift Solenoid (SS) 1 Valve Performance - Stuck On |
| • | DTC P0756: Shift Solenoid (SS) 2 Valve Performance - Stuck Off |
| • | DTC P0776: Clutch Pressure Control (PC) Solenoid 2 - Stuck Off |
| • | DTC P0777: Clutch Pressure Control (PC) Solenoid 2 - Stuck On |
| • | DTC P0796: Clutch Pressure Control (PC) Solenoid 3 - Stuck Off |
| • | DTC P0797: Clutch Pressure Control (PC) Solenoid 3 - Stuck On |
| • | DTC P2714: Clutch Pressure Control (PC) Solenoid 4 - Stuck Off |
| • | DTC P2715: Clutch Pressure Control (PC) Solenoid 4 - Stuck On |
| • | DTC P2723: Clutch Pressure Control (PC) Solenoid 5 - Stuck Off |
| • | DTC P2724: Clutch Pressure Control (PC) Solenoid 5 - Stuck On |
Control Solenoid Valve and Transmission Control Solenoid Module Assembly Cleaning
The control solenoid (w/body and TCM) valve assembly cleaning procedure is a specific software based routine, which resides in the TCM. This procedure is activated by the scan tool and is used to cycle the solenoids and valves in the control solenoid valve
assembly in an attempt to dislodge debris and free up the valves after a performance diagnostic trouble code (DTC) has set. When the cleaning procedure is completed, the DTC enable criteria should be run again to see if the DTC concern has been corrected.
- Operate the transmission to achieve 70°- 90°C (158° - 194°F).
- With a scan tool, select the Service Cleaning Procedure. Initiate the cleaning procedure.
- When the cleaning procedure is completed, shut OFF the ignition for 30 seconds.
- Restart the engine and operate the vehicle based on the criteria specified in Conditions for Running the DTC.
- Observe if the applicable DTC(s) has run and passed to verify if the cleaning procedure was effective.
Warranty Information
Important:
| • | This labor operation should be used only in instances where the cleaning procedure is performed and no further repairs are necessary to correct the concern. |
| • | When submitting K9450, a full detail comment describing the DTC or condition being addressed by the cleaning procedure is required in the Comment portion of the claim for U.S. dealers or documented on the repair order for Canadian dealers. Claims
that do not include an appropriate comment will be subject to audit and subsequent debit.. |
| • | This labor operation may NOT be used in conjunction with another labor operation for the same customer concern. |
For vehicles repaired under warranty, use:
Labor Operation
| Description
| Labor Time
|
K9450
| Cleaning-Control Solenoid Valve and Transmission Control Solenoid Module Assembly
| 0.5 hr*
|
*This time is new to the current Labor Time Guide. The next update of the Labor Time Guide will contain this new labor time.
|
