Service bulletin PIT5509K
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10237677 |
| Published by NHTSA | 2023-06-13 |
| Manufacturer's number | PIT5509K |
| Manufacturer's date | 2023-05-22 |
| NHTSA component | AIR BAGS; ELECTRICAL SYSTEM; TRAILER HITCHES |
NHTSA's summary
This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Air bags, Electrical system, Trailer hitch
Trouble codes named
C1114
| CADILLAC ESCALADE | 2024 |
|---|---|
| CADILLAC ESCALADE ESV | 2021, 2022, 2023 |
| CHEVROLET COLORADO | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET SILVERADO 1500 | 2014 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2015, 2016 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2020 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO EV | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET TAHOE | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| GMC CANYON | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| GMC SIERRA 1500 | 2014 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2015, 2016 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2020 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON DENALI | 2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON XL | 2020, 2021, 2022, 2023, 2024 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V611000 | 2026-09-24. AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR |
|---|---|
| 2026414 | 2026-08-27. Airbag |
| 2026245 | 2026-05-21. Airbag |
| 26V325000 | 2026-05-21. AIR BAGS |
| 2026129 | 2026-03-19. Airbag |
| 26V166000 | 2026-03-19. AIR BAGS |
| 2025680 | 2025-12-11. Airbag |
| 25V856000 | 2025-12-11. AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE; AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE:SOFTWARE |
| 25V432000 | 2025-06-26. AIR BAGS |
| 2025352 | 2025-06-25. Airbag |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| N252529080 | 2026-04-01. Service campaign. Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing. |
|---|---|
| N252515590 | 2026-01-27. Service campaign. Certain vehicles listed above, may have a condition in which the body-to-chassis ground strap may be corroded. Dealers will replace the ground strap. |
| 25-NA-119 | 2025-10-27. Service bulletin. This service bulletin provides information on the Service Safety Restraint Message displayed on the DIC Airbag malfunction indicator illuminated. |
| 25-NA-108 | 2025-10-27. Service bulletin. This bulletin provides a procedure to inspect and verify the drive shafts are over extending past the 5mm tolerance, causing the customers concern of a fluid leak under the vehicle. |
| 25-NA-044 | 2025-10-27. Service bulletin. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs. |
| 24-NA-235 | 2025-10-27. Service bulletin. This technical bulletin provides a procedure to correct the condition of Steering Column Rattle and Turn Signal Over Cancels. |
| 24-NA-202 | 2025-10-27. Service bulletin. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information. |
| 24-NA-170 | 2025-10-27. Service bulletin. This service bulletin provides repair information to correct a customer concern of Check Engine Lamp Illuminated with HVAC Related DTC. |
| PIE0840 | 2025-10-27. Service bulletin. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards having the Check Engine Lamp illuminated on Driver Information Center (DIC). |
| 23-NA-202 | 2025-10-25. Service bulletin. This service bulletin provides information on High Voltage Drive Motor Battery - TAC Approval and Exchange Program for BrightDrop, Chevrolet Silverado EV, and GMC Sierra EV, HUMMER EV/SUV. |