NHTSA ID Number: 10161935
Manufacturer Communication Number: 18NA083
This technical bulletin provides a procedure to adjust the automatic transmission range selector actuator hardware module to correct a condition of a Service Transmission Message on DIC or MIL Illuminated.
4 Affected Products
Bulletin No.: 18-NA-083
Date: May, 2019
Subject: Service Transmission Message Displayed on Driver Information Center (DIC), Malfunction Indicator Lamp (MIL) Illuminated – DTCs P0722, P0729, P0730, P0731, P0732, P0733, P0734, P0735, P073D, P073E, P07A2, P07E4, P07E5 and/or P1769 Set
|Involved Region or Country||North America, Europe, South Korea, China, Middle East|
|Condition||Some customers may comment on the following conditions:
• MIL is illuminated
Some technicians may find one or more of the following DTCs set in history or current:
• P0722: Output Speed Sensor Circuit No Signal
• P0729: 6th Gear Ratio Incorrect
• P0730: Gear Ratio Incorrect
• P0731: 1st Gear Ratio Incorrect
• P0732: 2nd Gear Ratio Incorrect
• P0733: 3rd Gear Ratio Incorrect
• P0734: 4th Gear Ratio Incorrect
• P0735: 5th Gear Ratio Incorrect
• P073D: Unable to Engage Neutral set in the Chassis Control Module
• P073E: Unable to Engage Reverse set in the Chassis Control Module
• P07E4: Unable to Engage Park set in the Chassis Control Module
• P07E5: Unable to Engage Drive set in the Chassis Control Module
• P1769: Transmission Range Sensor TRCM Correlation set in the Chassis Control Module
|Cause||This condition may be caused by the misalignment of the coupler between the Transmission Range Control Module (TRCM) and the transmission.|
|Correction||If the above DTCs are set in history or current during the service evaluation, the TRCM needs to be re-centered by following the Service Procedure below.|
- Inspect the transmission fluid level. Refer to Transmission Fluid Level and Condition Check in SI.
- Apply the parking brake and place the transmission control assembly in the Park position.
- Perform the backup Park lock actuator disarming procedure. Refer to Backup Park Lock Actuator Disarming in SI.
4.2. Remove the ECM bracket (2).
4.3. Proceed to step 5.
4.2. Remove the bolt that secures the intake air duct to the core support.
4.3. Remove the air cleaner bracket (3).
- Loosen (approximately ¼ in.) the automatic transmission range selector actuator hardware module bolts (2).
Note: The turning radius of the module will be very slight when centering.
- Rotate the automatic transmission range selector actuator hardware module:
- Rotate clockwise until right lock position,shown with a blue line.
- Rotate counterclockwise until left lock position, shown with a green line.
- Rotate clockwise until it is centered between both full lock positions, shown with a red line. 7. While holding the automatic transmission range selector actuator hardware module with one hand, tighten hardware module bolts to prevent the actuator from moving from the center position.
- Tighten the automatic transmission range selectoractuator hardware module bolts.
⇒ Refer to Fastener Specifications in SI.
- Perform the TRCM learn procedure (Not for newmodules). Refer to Transmission Range Control Module Learn Procedure in SI.
- If the test fails, re-adjust the module and retest.
- If the test fails after re-adjusting the module, refer to SI for further diagnostics on the code set.
- If the test passes, proceed with procedure.
- Install previously removed components.
⇒ Tighten the fasteners to specifications. Refer to Fastener Specifications in SI.
No parts are required for this repair.
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
|Labor Operation||Description||Labor Time|
|8480728*||Automatic Transmission Range Selector Actuator Hardware Module Adjustment||0.5 hr (XT5)|
|1.0 hr (LaCrosse)|
|*This is a unique Labor Operation for Bulletin use only.|
|Modified||Released March 15, 2018
May 22, 2019 – Added additional DTCs, 2019 to XT5 model and steps to check fluid condition at the beginning of the Service Procedure.
Bulletin No.: 18-NA-083
Date: May, 2019
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Last update on 2019-09-14 / Affiliate links / Images from Amazon Product Advertising API
Last update on 2019-09-14 / Affiliate links / Images from Amazon Product Advertising API