NHTSA ID Number: 11013261
Manufacturer Communication Number: 24-NA-166
TSB/Document Date: 2025-01-30
Summary
This technical bulletin provides repair information to correct a customer concern of DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable to Relearn Ethernet Cable Overlay for TCP OnStar Module.
Bulletin No.: 24-NA-166
Service Bulletin
Date: January, 2025
TECHNICAL
Subject:
DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable to Relearn
Ethernet Cable Overlay for TCP OnStar Module
This Service Bulletin replaces PIT6188E. Please discard all versions of PIT6188.
Brand:
Model:
Model Year:
from
to
Enclave
2025
2025
Traverse
2024
2025
Acadia
2024
2025
VIN:
from
Engine:
to
LK0
Involved Region or Country
North America, Middle East
Condition
Some customers may comment on a Tire Pressure lamp illuminated and/or message on
the dash. The dealer may also not be able to perform the tire pressure learn for one or
both front tires.
Note: If only the rear Tire Pressure Monitors are setting, then it is not related to this issue.
Technician may find one or more of the following DTCs:
DTCs C1171, C1172, C1172, and/or C1174.
Cause
The causes of the condition may be interference from OnStar module due to an issue
grounding from the X7 connector on the Ethernet cable. This issue can also be
intermittent.
Correction
Replace Ethernet cable with overlay. Refer to the Service Procedure below.
Service Procedure
Important: Service agents must comply with all International
, Federal, State, Provincial, and/or Local laws
applicable to the activities it performs under this bulletin, including but not limited to handling, deploying,
preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. In the event of a
conflict between the procedures set forth in this bulletin and the laws that apply to your dealership, you
must follow those applicable laws.
Important: This technical service bulletin (TSB) can only be completed by certified repair facilities who have met all
specific training, tool and equipment requirements pertaining to the vehicle Brand and Model serviced. Repairs must
be performed by a technician who has successfully completed the required training.
1. Once confirmed the TPM sensors cannot be learned, gain access to the rear headlining trim panel. DO NOT
remove the headlining trim panel, only lower it to gain access Refer to Headlining Trim Panel Replacement in
SI. Disconnect the X7 connector and attempt to learn the TPM sensors.
Copyright 2025 General Motors. All Rights Reserved.
Page 2
January, 2025
Bulletin No.: 24-NA-166
6720400
If the TPM sensors are able to learn, continue with Ethernet Cable replacement. Otherwise follow SI.
2. Transfer housing connectors.
3. Fold the 3rd row seats forward.
4. Remove the Rear Compartment Floor Stowage Compartment Divider. Refer to Rear Compartment Floor
Stowage Compartment Divider Replacement in SI.
5. Remove the Right-Hand Front Side Door Sill Garnish Molding. Refer to Front Side Door Sill Garnish Molding
Replacement in SI.
6. Remove the Right-Hand Rear Side Door Sill Garnish Molding. Refer to Rear Side Door Sill Garnish Molding
Replacement in SI.
7. Loosen the Center Pillar Lower Trim Panel from the vehicle. Refer to Center Pillar Lower Trim Panel
Replacement in SI.
Bulletin No.: 24-NA-166
January, 2025
Page 3
6699007
8. Fold and raise up the Right-Hand Rear seat. DO NOT REMOVE.
9. Remove the Right-Hand Quarter Upper and Lower Rear Trim Panel. Refer Quarter Lower Rear Trim Panel
Replacement (Right Side) in SI.
10. Loosen the Left-Hand Quarter Upper Trim Panel. Refer to Quarter Upper Trim Panel Replacement in SI.
Page 4
January, 2025
Bulletin No.: 24-NA-166
6709785
Bulletin No.: 24-NA-166
January, 2025
Page 5
6699008
11. Locate the X205 Ethernet Cable in the Right-Hand Front Passenger Compartment and disconnect.
Page 6
January, 2025
Bulletin No.: 24-NA-166
6699010
12. Locate the X7 Ethernet Cable at the Telematic Control Module and disconnect.
Bulletin No.: 24-NA-166
January, 2025
Page 7
6699012
Page 8
January, 2025
Bulletin No.: 24-NA-166
6699015
Caution: Use care to terminate the correct connector.
Note: The existing Ethernet cable is bundled with the body harness. The service ethernet cable will be routed next to
the body harness. The terminals must be removed from the existing ethernet cables to ensure they are not used in
future repairs.
13. Cut BOTH ends off the existing Ethernet Cable at X205 and X7 of the Telematic Control Module and wrap PVC
Electrical tape around both ends of the cable to prevent future use. The unused cable can remain bundled with
the body harness.
Important: Keep both ends and connectors. The housing will need to be transferred to the new cable.
14. Transfer both housings to the new cable. The new cable will come without the housings.
Bulletin No.: 24-NA-166
January, 2025
Page 9
6720419
15. Transferring the X205 housing.
15.1. Remove the rear clip but releasing both clips from the outer housing and remove it.
Important: Save this clip for the new cable.
6720403
Empty housing shell. Circle in red is the 1 release tab. Arrow is showing the direction the tab needs to be
pressed to release the cable, moving it away from the middle.
Note: Very minimal pressure is needed.
Page 10
January, 2025
Bulletin No.: 24-NA-166
6720429
The X205 housing tab is very difficult to see with the cable installed.
6720432
Following the middle ridge to the back, this is where the housing locks onto the cable.
Bulletin No.: 24-NA-166
January, 2025
Page 11
6720428
6720401
The best way to get to the release tab is to follow the cable’s middle ridge the back (do not ride the wall of
the housing or you will miss it, use the cable’s middle ridge to guide you). Using light pressure, press
away from the center towards the housing to release. Make sure to apply light pulling pressure to the
back of the cable so it can release while depressing the tab.
Note: Slide off the seal and save it for the new cable.
Page 12
January, 2025
Bulletin No.: 24-NA-166
6720420
16. Transferring the X205 housing.
Here is the empty housing shell. Circle in red is the 1 release tab. The arrow is showing the direction the tab
needs to be pressed to release the cable. Moving it away from the middle.
Note: Very minimal pressure is needed.
6720422
The X7 housing tab is very difficult to see with the cable installed.
Bulletin No.: 24-NA-166
January, 2025
Page 13
6720426
Following the middle ridge to the back, this is where the housing locks onto the cable.
6720425
Page 14
January, 2025
Bulletin No.: 24-NA-166
6720417
The best way to get to the release tab is to follow the cable’s middle ridge the back (do not ride the wall of the
housing or you will miss it, use the cable’s middle ridge to guide you.) Using light pressure, press away from the
center towards the housing to release. Make sure to apply light pulling pressure to the back of the cable so it
can release while depressing the tab.
6706059
17. Connect the Replacement Ethernet Cable the connector at X205.
Bulletin No.: 24-NA-166
January, 2025
Page 15
6706063
Page 16
January, 2025
Bulletin No.: 24-NA-166
6706066
Note: Replacement Ethernet Cable routing shown in Green.
Important: Use extreme care when handling the new service ethernet cables. Avoid kinks, sharp bends, pinch
points, and excessive wire tie tightness.
18. Begin to route the new Service cable starting at X205 and following the Body Wiring Harness running back
towards the Telematic Control Module. Use the diagrams above to reference cable routing.
Bulletin No.: 24-NA-166
January, 2025
Page 17
6706076
Page 18
January, 2025
Bulletin No.: 24-NA-166
6706090
19. Run the replacement Ethernet Cable through the body wiring harness clamshell and underneath the Front
Passenger Seat.
Bulletin No.: 24-NA-166
January, 2025
Page 19
6706097
Page 20
January, 2025
Bulletin No.: 24-NA-166
6706101
Bulletin No.: 24-NA-166
January, 2025
Page 21
6706111
20. Continue to route the replacement Ethernet Cable alongside the Body Wiring Harness in the rear passenger
compartment and up the C-Pillar.
Page 22
January, 2025
Bulletin No.: 24-NA-166
6706120
Bulletin No.: 24-NA-166
January, 2025
Page 23
6706125
21. Continue to route the replacement Ethernet Cable following the Body Wiring Harness through the Rear HVAC
area.
Page 24
January, 2025
Bulletin No.: 24-NA-166
6706129
Important: Ensure the replacement Ethernet Cable will have enough slack so that it is not pulling on the connector
at X7 of the Telematic Control Module. Failure to do so could damage the connector at the module.
22. Make a small loop to remove some of the excess cable and secure with a wire tie. Ensure to leave plenty of
slack so that the cable will not pull on the connector at X7 of the Telematic Control Module.
Bulletin No.: 24-NA-166
January, 2025
Page 25
6706144
Page 26
January, 2025
Bulletin No.: 24-NA-166
6706155
23. Follow the Body Wiring Harness up the rear of the vehicle and into the rear of the headlining.
Bulletin No.: 24-NA-166
January, 2025
Page 27
6706159
Note: If there is not an adequate amount of slack in the cable return to the loop made in Step 17 and gain extra
slack from the loop. Resecure the loop with a wire tie if necessary.
Important: Ensure the replacement cable has plenty of slack and is not pulling on the cable connector plug. Failure
to do so could damage the connector at the module.
24. Connect the replacement cable into X7 of the Telematic Control Module. Ensure that the cable has enough
slack left to not pull on the X7 connector.
Page 28
January, 2025
Bulletin No.: 24-NA-166
6706169
Important: Avoid excessive wire tie tightness on the replacement cable when securing to the Body Wiring Harness.
25. Add one wire tie around the old cable harness and the new replacement cable near the existing harness tie
down. This will aid in securing the connector into the X7 Terminal of the Telematic Control Module.
Important: Avoid excessive wire tie tightness on the replacement cable when securing on the Body Wiring Harness.
26. Secure the replacement cable to the Body Wiring Harness with wire ties. Ensure the replacement cable does
not move/rattle.
27. Reinstall the Headliner as necessary. Refer to Headlining Trim Panel Replacement in SI.
28. Reinstall the Left-Hand Quarter Upper Trim Panel. Refer to Quarter Upper Trim Panel Replacement in SI
29. Reinstall the Right-Hand Quarter Upper and Lower Trim Panel. Refer to Quarter lower Rear Trim Panel
Replacement (Right Side) in SI.
30. Reposition the Right-Hand Rear Seat as necessary.
31. Reinstall the Right-Hand Center Pillar Upper and Lower Trim Panel. Refer to Center Pillar Lower Trim Panel
Replacement in SI.
32. Reinstall the Right-Hand Rear Side Door Sill Garnish Molding. Refer to Rear Side Door Sill Garnish Molding
Replacement in SI.
33. Reinstall the Right-Hand Front Side Door Sill Garnish Molding. Refer to Front Side Door Sill Garnish Molding
Replacement in SI.
34. Reinstall the Rear Compartment Floor Stowage Compartment Divider. Refer to Rear Compartment Floor
Stowage Compartment Divider Replacement in SI.
35. Fold the 3rd row Seat back as necessary.
Bulletin No.: 24-NA-166
January, 2025
Page 29
Parts Information
Causal
Part
Description
X
Cable, Body
Wiring Harness
Modular Pair
Part
Number
Qty
26501515
1
Warranty Information
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
*2086678
Ethernet Cable Overlay X7
2.4 hr
*This is a unique Labor Operation for Bulletin use only.
Version
4
Modified
Released September 05, 2024
Revised October 10, 2024 – Removed the GMC Canyon, Hummer EV and Savana,
added breakpoint and Middle East.
Revised October 25, 2024 – Added note to Condition Section.
Revised January 13, 2025 - Added the 2025 Model Year.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job
properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
WE SUPPORT VOLUNTARY
TECHNICIAN
CERTIFICATION
- 【Perfect Emergency Repair Solution】This kit includes...
- 【Premium Materials for Safe Repairs】Our tire screw plugs...
- 【2 Sizes for Every Puncture】Choose the right size for...
- 【5-Minute DIY Repair】Skip the auto shop and fix flats...
- 【Emergency-Ready Design】Compact & ready for...
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: 24-NA-166
Replacement Service Bulletin Number:
MFR Communication Date: 2025-01-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: WHEELS
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU coding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Programming): Allows for Ford, for Lincoln, and for Mazda ECU programming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
- Cost-effective ECU Coding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
- OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
- 3 Years Software Update, Value for Money: With 3 years of software updates and 22+ languages(no IP restrictions), XTOOL D7S auto scanner code scanner ensures ongoing compatibility for the latest car models and improved diagnostic functions. This all system vehicle diagnostic scanner comes with a 30-day return policy and a 24-month repair for dependable performance. XTOOL are dedicated to your satisfaction, so enjoy seamless support and lifetime expert assistance. Should you encounter any issues or concerns, don’t hesitate to reach out XTOOL. D7S with newest update with 22 languages freely transfer without authorization, check details from setting-language or from XTOOL
- 🔥 Historical lowest pr-ice now on sa-le--hot se-lling.
- 【🎈𝗜𝗙𝟳𝟰𝟱 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀 𝟲 𝗲𝘀𝘀𝗲𝗻𝘁𝗶𝗮𝗹 𝗿𝗲𝘀𝗲𝘁 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀—𝗔𝗕𝗦 𝗕𝗹𝗲𝗲𝗱𝗶𝗻𝗴, 𝗢𝗶𝗹 𝗥𝗲𝘀𝗲𝘁, 𝗘𝗣𝗕, 𝗦𝗔𝗦, 𝗧𝗵𝗿𝗼𝘁𝘁𝗹𝗲 𝗥𝗲𝗹𝗲𝗮𝗿𝗻, 𝗮𝗻𝗱 𝗕𝗠𝗦—𝗽𝘂𝘁𝘁𝗶𝗻𝗴 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹-𝗴𝗿𝗮𝗱𝗲 𝗺𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 𝗯𝗮𝗰𝗸 𝗶𝗻 𝘆𝗼𝘂𝗿 𝗵𝗮𝗻𝗱𝘀.】Spongy brakes? Stuck oil light? Parking brake won't release? Off-center steering? Rough idle after battery disconnect? Draining battery? IF745 handles all with a few taps. One tool covers six dealer-level resets, saving hundreds in labor costs. ❗ NOTE: Does NOT support bidirectional control, coding, or programming.
- 【✨ 𝗜𝗙𝟳𝟰𝟱 𝗴𝗼𝗲𝘀 𝗯𝗲𝘆𝗼𝗻𝗱 𝗯𝗮𝘀𝗶𝗰 𝗰𝗼𝗱𝗲 𝗿𝗲𝗮𝗱𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝟭𝟬 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗲𝗱 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀—𝗗𝗧𝗖 𝗟𝗼𝗼𝗸𝘂𝗽, 𝗜/𝗠 𝗥𝗲𝗮𝗱𝗶𝗻𝗲𝘀𝘀, 𝗙𝗿𝗲𝗲𝘇𝗲 𝗙𝗿𝗮𝗺𝗲, 𝗟𝗶𝘃𝗲 𝗗𝗮𝘁𝗮, 𝗢𝟮𝗦, 𝗢𝗕𝗠, 𝗘𝗩𝗔𝗣, 𝗮𝗻𝗱 𝗺𝗼𝗿𝗲. 】Pulling a code tells you something is wrong. IF745 tells you what the code means, when the fault happened, and what data surrounds it. Pass emissions with one I/M Readiness tap. Freeze the fault moment with Freeze Frame. Monitor live sensor data in real time. Turn cryptic codes into clear answers.
- 【🛒 𝗜𝗙𝟳𝟰𝟱 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀 𝗳𝘂𝗹𝗹-𝘀𝘆𝘀𝘁𝗲𝗺 𝗱𝗶𝗮𝗴𝗻𝗼𝘀𝘁𝗶𝗰𝘀 𝗮𝗰𝗿𝗼𝘀𝘀 𝗮𝗹𝗹 𝗺𝗼𝗱𝘂𝗹𝗲𝘀—𝗲𝗻𝗴𝗶𝗻𝗲, 𝗔𝗕𝗦, 𝗮𝗶𝗿𝗯𝗮𝗴, 𝘁𝗿𝗮𝗻𝘀𝗺𝗶𝘀𝘀𝗶𝗼𝗻, 𝘀𝘁𝗲𝗲𝗿𝗶𝗻𝗴, 𝘀𝘂𝘀𝗽𝗲𝗻𝘀𝗶𝗼𝗻, 𝗯𝗼𝗱𝘆 𝗲𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰𝘀, 𝗮𝗻𝗱 𝗺𝗼𝗿𝗲. 】Warning lights on but you don't know why? Skip the $100+ diagnostic fee at the shop. Run a complete self-check from your driveway. IF745 reads and clears fault codes, retrieves ECU info, and displays live data from every accessible module—delivering a full vehicle health report in minutes, without leaving home.
- 【✅𝗜𝗙𝟳𝟰𝟱 𝗳𝗲𝗮𝘁𝘂𝗿𝗲𝘀 𝗮 𝟳-𝗶𝗻𝗰𝗵 𝗱𝗶𝘀𝗽𝗹𝗮𝘆, 𝗲𝗿𝗴𝗼𝗻𝗼𝗺𝗶𝗰 𝗱𝗲𝘀𝗶𝗴𝗻, 𝗪𝗶-𝗙𝗶 𝘂𝗽𝗱𝗮𝘁𝗲𝘀, 𝗮𝗻𝗱 𝘇𝗲𝗿𝗼 𝘀𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗳𝗲𝗲𝘀 𝗳𝗼𝗿 𝗵𝗮𝘀𝘀𝗹𝗲-𝗳𝗿𝗲𝗲 𝗱𝗶𝗮𝗴𝗻𝗼𝘀𝘁𝗶𝗰𝘀.】Large screen means no squinting. Intuitive navigation and customizable data displays put key info at your fingertips. Wi-Fi delivers lifetime free updates without a computer. No recurring fees. No hidden costs. Just a reliable tool that works as hard as you do.
This product presentation was made with AAWP plugin.