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NHTSA ID Number: 10198852
Manufacturer Communication Number: 19NA206
Summary
This service bulletin provides repair information to correct a customer concern of seeing an intermittent Shift to Park message displayed while vehicle is in Park.
Condition
Some customers may comment on seeing an intermittent Shift to Park message when the vehicle has been shifted into Park, and the ignition has been turned to the Off position.
Aside from seeing the message, technicians may find DTC B000A set.
Cause
The cause of the condition may be that the park switch in the transmission control (shifter) assembly is not pulling the BCM signal low to electronically show that the vehicle is in the Park position.
Correction
Verify the condition and follow the steps in the Service Procedure below. R & R the transmission control, install a new shifter harness, then upon reinstalling the transmission control, install an In-line Shifter Wire Harness Jumper between the shifter base connector and the console harness connector.
Parts Information
| Causal Part | Description | Part Number | Qty |
| N/A | HARNESS ASM-A/TRNS CONT WRG | 84733196 | 1 |
| SWITCH ASM-A/TRNS CONT – (2016-2018 Malibu/Acadia/ Traverse) | 84955381 | 1 | |
| SWITCH ASM-A/ TRNS CONT – (2016-2019 Volt/ Camaro/ ATS/CTS) | 84955382 | ||
| SWITCH ASM-A/TRNS CONT – (2019 Acadia, Blazer, Traverse, Malibu, Holden Acadia) | 84955379 | ||
| COVER-A/TRNS CONT TR | 84955380 | 1 |
14 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CHEVROLET | BLAZER | 2019 |
| CHEVROLET | MALIBU | 2016-2019 |
| CHEVROLET | TRAVERSE | 2018-2019 |
| CHEVROLET | VOLT | 2016-2019 |
| GMC | ACADIA | 2017-2019 |
1 Associated Document
Manufacturer Communications
Bulletin No.: 19-NA-206
Date: May, 2021
MC-10198852-9999.pdf 11798.643KB
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NHTSA ID Number: 10187385
Manufacturer Communication Number: 19NA206
Summary
This service bulletin provides repair information to correct a customer concern of seeing an intermittent Shift to Park message displayed while vehicle is in Park.
1 Associated Document
Manufacturer Communications
Bulletin No.: 19-NA-206
Date: December, 2020
MC-10187385-9999.pdf 405.767KB
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SEOCONTENT-START
Service Bulletin Bulletin No.: 19-NA-206 Date: May, 2021 TECHNICAL Subject: Intermittent Shift to Park Message Displayed While Vehicle in Park, DTC B000A Set Brand: Model: Model Year: Date Breakpoint: Engine: Transmission: from to from to Chevrolet Blazer 2019 2019 SOP Prior to April 2, 2019 All All Malibu 2016 Traverse 2018 Volt 2016 GMC Acadia 2017 Holden Acadia 2019 Involved Region or Country North America, Russia, Middle East, Israel, Palestine, Chile, Colombia, Peru, GM Korea Company, Australia/New Zealand, Other Africa Condition Some customers may comment on seeing an intermittent Shift to Park message when the vehicle has been shifted into Park, and the ignition has been turned to the Off position. Aside from seeing the message, technicians may find DTC B000A set. Cause The cause of the condition may be that the park switch in the transmission control (shifter) assembly is not pulling the BCM signal low to electronically show that the vehicle is in the Park position. Correction Verify the condition and follow the steps in the Service Procedure below. R & R the transmission control, install a new shifter harness, then upon reinstalling the transmission control, install an In-line Shifter Wire Harness Jumper between the shifter base connector and the console harness connector. Page 2 May, 2021 Bulletin No.: 19-NA-206 Service Procedure 4489334 1. Remove the transmission control from the vehicle. Refer to Transmission Control Replacement in SI. 2. Remove the transmission control base plate, as necessary, and place the transmission control on a suitable work surface. 5682904 3. Move the shift rod out of Park position: 3.1. From the back side of the shifter, use a finger to depress the Brake Transmission Shift Interlock (BTSI) solenoid (1) and release the lock arm. 3.2. Depress the shift button (2) on top of the shifter. 3.3. Move the shift rod (3) forward out of Park, to allow access to Park Switch pins. 5682905 4. Remove the Park Switch Cover: Note: The slot (1) on top of the shift control allows easier access to the tab. 4.1. Use a pick, or screwdriver, to lift and release the rear most tab (2) of cover. 4.2. Release the lower front tab (3) next. 4.3. Release the top tab (4) last and remove the cover. 5682906 5. Using a pick or screwdriver, push the Park Switch pins (1) out of the shift control body, and release the Park Switch. Bulletin No.: 19-NA-206 May, 2021 Page 3 5682907 6. Using a pick or screwdriver, release and lift the Park Switch (1) out of the shift control body. 5682908 7. Use needle nose pliers to release the BTSI lock. 5682909 8. Using a pick or screwdriver, lift the BTSI solenoid (1) out of pocket in shift control. Page 4 May, 2021 Bulletin No.: 19-NA-206 5682910 Note: There are two styles of Tap Up, Tap Down connectors. One is nested (shown above), one is loose. 9. Using a pick or screwdriver, disconnect the Tap Up, Tap Down harness in the shift control assembly. 5682911 10. Using a pick or screwdriver, lift the Tap Up, Tap Down harness from the nest in the shift control assembly. 5682912 11. Carefully lift all wiring from the shift control assembly. Bulletin No.: 19-NA-206 May, 2021 Page 5 5682913 12. Carefully insert a pick or screwdriver between the shift control wire harness connector and shift control body, to release lock tab and lift up on connector and release. 5682916 13. The wire harness is now free from the shift control. 5682918 14. Start installation of the new shift control wiring harness: 14.1. Begin by inserting shift control harness connector into the shift control assembly. 14.2. Fit the wire harness below the retainer tab in the shift control assembly. 5682920 15. Push the Tap Up, Tap Down harness connector in the nest in the shift control assembly, and insert the Tap Up, Tap Down shift control harness connector. Page 6 May, 2021 Bulletin No.: 19-NA-206 5682922 16. Lay the BTSI solenoid and Park Switch on the shift control assembly, in the approximate location of installation. 5682925 Note: When installing, be sure to align the BTSI elbow connection so it fits in the BTSI lock release. 17. Install the BTSI solenoid in the slots with the coil side down. 5682928 18. Push the BTSI solenoid lock in place until it clicks. 5682930 19. Install the BTSI solenoid wiring and the Park Switch wiring: 19.1. Press the wiring for the BTSI solenoid and the Park Switch under the tabs on the body of the shift control assembly. 19.2. Press the Park Switch into place with the two alignment pins. 19.3. Put the shift control in the Park position. Bulletin No.: 19-NA-206 May, 2021 Page 7 20. Check the operation of the Park Switch: 5682931 20.1. Press the shift shaft release rod on the top of the shift control to open the Park Switch to verify it opens all the way and stays in place. 5682933 20.2. Release the rod and cycle a few times to ensure the Park Switch is fully seated and opening and closing properly. 21. Carefully install the Park Switch cover, being sure all three tabs lock in place. 4489334 22. Reinstall the transmission control assembly in the vehicle. Refer to Transmission Control Replacement in SI. 5404694 Caution: Ensure the jumper harness is not twisted or kinked. 23. Install the Jumper harness (P/N 84733196) between the shift control and the console body harness connector. 24. Start the vehicle and verify that the Shift to Park message is NOT displayed. Page 8 May, 2021 Bulletin No.: 19-NA-206 Parts Information Causal Part Description Part Number Qty N/A HARNESS ASM-A/TRNS CONT WRG 84733196 1 SWITCH ASMA/ TRNS CONT – (2016-2018 Malibu/Acadia/ Traverse) 84955381 1 SWITCH ASMA/ TRNS CONT – (2016-2019 Volt) 84955382 SWITCH ASMA/ TRNS CONT – (2019 Acadia, Blazer, Traverse, Malibu, Holden Acadia) 84955379 COVER-A/TRNS CONT TR 84955380 1, if necessary Note: Cover is NOT needed if step #4 is completed properly. Only order if damaged. Warranty Information Note: Specific to the Volt model, repairs are covered under the Voltec (Electric and Hybrid Vehicle) Warranty. 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 5480908* Remove and Reinstall Transmission Control, Install New Shifter Harness, Add Wire Harness Jumper Blazer – 0.8 hr Malibu – 0.8 hr Traverse – 0.7 hr Volt – 1.1 hrs GMC Acadia – 1.4 hrs Holden Acadia – 1.4 hrs *This is a unique Labor Operation for bulletin use only. Version 8 Modified Released September 11, 2019 September 19, 2019 – Removed the Camaro model. October 14, 2019 – Updated the Warranty Information to add a Note for the Voltec Warranty. January 30, 2020 – Added a reference to DTC B000A in the Condition and added repair information to steps #4 and 8 of the Service Procedure. October 30, 2020 – Updated the Warranty Information with Add Times for Transmission Control Replacement. December 11, 2020 – Updated the Correction section, changed the complete Service Procedure, Parts Information and Warranty Information. February 05, 2021 – Removed the 2016 Volt Model and added a Note to the Cover listed at the bottom of the Parts Information table. May 19, 2021 – Added the 2016 Volt model.
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SEOCONTENT-END
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