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.
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)
- 【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...
- [PROFESSIONAL QUALITY ] - AUTOWN Tire Repair Kits are made...
- [DURABLE & SAFE ] - The tire puncture repair set own great...
- [MULTIPLE USES ] - The AUTOWN 68 pcs tire repair heavy duty...
- [EASY TO USE ] - Our tire plug kits have everything you need...
- [QUICK ACTION] - We care about every customer's sense of...
This product presentation was made with AAWP plugin.
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: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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
- [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, and we’ll provide a solution within 24 hours. THINKSCAN 689BT Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- [Good News] THINKSCAN 689BT is the most competitive automotive scan tool to date, offering wireless updates with no subscription fees(valued 500Buc.ks) . With all the features of THINKTOOL PD8,PRO, built on Android 10 platform with 4-core CPU, 4GB RAM
and 64GB ROM, serving up to 5X faster than older MAX/MINI/PLUS vehicle scanners, no more slow and delayed feedbacks, it's time to update your garage tool. - [Big Money Saver] Premium THINKSCAN 689BT Wireless Diagnostic Scanner, save up to 400USD per year, includes all useful features: Full bi-directional controls, ECU coding, 34+ services, OEM all system diagnostics, Worldwide vehicles coverage, CAN FD & DoIP, FCA AutoAuth（The 689BT only provides a login and purchase portal, and users are required to register for an FCA account and pay a membership fee in order to perform the relevant automotive diagnostics)
- [3000+ Active Tests]Active testing is one of the most useful features in automotive maintenance and greatly improves mechanic efficiency. THINKCAR 689BT bidirectional scanner can send action commends to vehicle sub-systems or components for active test without using vehicle controls. It can perform various tests such as: EVAP Test, Fuel Trim Reset, Injector Buzz Test, Window/ Mirror/ Door Lock Test, Pump and Value Tests, etc. Get functions from "Diagnose>Car Model>System>Active Test".
- [Hot Advanced Features] 689BT bidirectional tool newly adds ECU Coding, Power Balance, Flash Hidden Functions, Reset Adaptive Data, Match Replaced Components, Customize OE-Settings. Such as: 1. changing the color of interior lights 2. switching on/off the auto hold, 3. customizing dash kits 4. activating the auto side mirror folding function 5. disables auto start-stop. Note: Coding functions vary by model&year.
- 【Warm Tips】Wired THINKSCAN 689 is connected through a detachable OBDII cable, and we also have added OBD2 Extension Cable (about 60 cm/2 feet) as g ift, enabling customers handling vehicle repairs with ease. Just click "Bundles Item" above to get it.
- 【Professional Car Diagnostic Tool】Tired of renew fees? Thinkscan 689 scanner provides dealer-level advanced functions for lifetime f.r.e.e update for auto mechanics and repair shops. 34+ Services, 3000+ Active Test, ECU Coding, 140+ Brands Coverage, FCA AutoAuth, CANFD&DOIP Protocol, Component Matching, Power Balance, V.A.G Guided, Compatible with Google Chrome integration, etc. With strong hardware backing, 64G Memory, Android 10, 4-core processors, and 4150mAh battery. Thinkscan 689 brings you the best as your daily business helper and never lets you drop the ball!
- 【Over 34 Reset Service, Adaptation + Relearn + Calibration + Initialization + Matching】Made for workshops, Thinkscan 689 scanner provides 34+ services for worldwide vehicles: such as Gear/SAS/EPB/TPMS/D.P.F/I.M.M.O/BMS/ETS/Oil/Brake/AFS/GEARBOX/SUNROOF/SUS Reset, ABS Bleed, Injector coding, etc. Warm tips: Compatibility may vary on vehicles' model and year, please contact seller before purchase to make sure it works well on your cars.
- 【Real Active Test】Thinkscan 689 scan tool features over 3000+ full bi-directional control ability, to send commands to vehicle’s systems/components, to verify system input/output without using the vehicle's controls, e.g. turn on the radiator fan, modulate the throttle, open/close windows, operate mirrors, Injector Buz Test, turn on interior&exterior lights, sound horn, test door lock actuators, turn on/off front/rear side ACM Solenoid, Vehicle level position calibration, Wheel Speed Sensor Supply.
- 【Comprehensive Solutions with Advanced Features】Take your vehicle customization to the next level with the Thinkscan 689's advanced ECU coding capabilities. This scan tool provides power balance, PMI, unlock more new features and enhance performance by activating dormant functions, customizing OE settings, matching replaced components, and reprogramming adaptive data to elevate your driving experience. Note: Compatibility varies by car models, please check before order.
- 【Powerful Bidirectional Control -- Active Test】Good News! The THINKSCAN 662 obd2 scanner has bidirectional control function,which is the most popular feature among mechanics.This function is mainly used to test whether the executing components in the electronic control system can work normally,By requesting information from the vehicle's ECU or sending commands to the ECU module to execute commands and identify maintenance status,quickly locate the cause of the fault.Such as ABS,Fuel Injectors,Adjusting Throttle,Coolant Fans,Radiator Fans,Coolant Pumps,EV.AP Test, Fuel Trim Reset,Injector Buzz Test,Pump/ Value Test,etc. Effectively shorten diagnosis time and reduce diagnosis costs.
- 【Unlock Pro-Level Diagnostics With Half Costs】 THINKSCAN 662 obd2 scanner diagnostic tool Delivers Premium Scanning Power for Half the Price! The OBD2 scanner can handle common issues with ECM,TCM,ABS,SRS. It can easily read and clear fault codes, analyze data streams, and ensure quick identification of problems. THINKSCAN 662 bidirectional scan tool has 12 practical reset functions, including Airbag Reset,ABS Bleeding,BMS,Brake Reset, D.P.F,Throttle Adaptation,Injector Coding,OIL Reset,steering angle Reset,Gearbox,TPMS,and more. The car scanner diagnostic tool very suitable for DIY enthusiasts, car repair technicians, and small and medium-sized repair shops.
- 【Multi Functional Intelligent Car Scanner Diagnostic Tool】 Automatic VIN + Real-time Data + DTC Lookup + Historical Diagnostic Records: This OBD2 scanner features auto serch technology, allowing for car recognition without the need for manual input. The real-time data of the car ECU is read and displayed in the form of text or a 4-in-1 merged waveform chart. You can save, share, print or send the entire inspection report via email for analysis. Historical diagnostic reports help you quickly identify vehicle issues and understand the condition of the vehicle. The built-in 'feedback' module provides customized repair Operation recommendations from our certified professionals.
- 【Upgraded Hardware + Ergonomically Engineered】 THINKSCAN 662 OBD2 scanner has a friendly combination of touch screen and physical buttons with an ergonomic appearance for comfortable use.Experience 2x faster scans and 50% longer lifespan vs standard models.This scanner para autos boast a 4-core 1.8GHz CPU,6.2-inch HD touch screen,2GB RAM + 32GB ROM storage capacity,a long-lasting 4150mAh battery,Android 8 ensures lightning-fast bootup and processing.The scanner is robust with rubberized protection that you can store and use in the trunk or garage.Whether you are engaged in Home car maintenance or road rescue car repair,this car scanner can help you perfectly solve car problems.
- 【Effortless Setup & Scanning - Intuitive for All Skill Levels】No More Complicated Scanners! The User Interface is as User-Friendly as THINKCAR 689BT! Truly Plug-and-Play,The downward sliding setup shortcut portal and drawer function shortcut portal make you use this scan tool as easy as using your own cell phone.The car scanner supports setup screenshot,screen recording,volume adjustment,this scan tool includes product e-manuals,instructional videos,and fault code libraries,users can check the usage guide,perfect for DIY car owners,Maintenance technician.If your father,husband,brother,boyfriend enjoys car repairs,THINKSCAN 662 is a great gift choice, and it has amazing family value.
This product presentation was made with AAWP plugin.
Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API