# Service bulletin PIT5509A

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: 10113352
- Published by NHTSA: 2017\-08\-15
- Manufacturer's number: PIT5509A
- Manufacturer's date: 2017\-01\-26
- NHTSA component: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; ELECTRICAL SYSTEM

## 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10113352-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10113352-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Trouble codes named

C1114

## Vehicles listed

- 2015 to 2017 CHEVROLET SILVERADO
- 2014 CHEVROLET SILVERADO 1500
- 2015 to 2017 CHEVROLET SUBURBAN
- 2015 to 2016 CHEVROLET TAHOE
- 2015 to 2017 GMC SIERRA
- 2014 GMC SIERRA 1500
- 2015 to 2017 GMC YUKON
- 2015 to 2017 GMC YUKON XL

## Recalls for the same vehicles and component

- [2024294](/recalls/tc/2024294.md), 2024-05-24: Electrical
- [2021407](/recalls/tc/2021407.md), 2021-07-01: Electrical
- [2019325](/recalls/tc/2019325.md), 2019-06-28: Electrical
- [2019204](/recalls/tc/2019204.md), 2019-04-26: Electrical
- [2016068](/recalls/tc/2016068.md), 2016-02-11: Electrical
- [16V084000](/recalls/nhtsa/16V084000.md), 2016-02-11: ELECTRICAL SYSTEM:SOFTWARE
- [15V640000](/recalls/nhtsa/15V640000.md), 2015-10-09: ELECTRICAL SYSTEM:IGNITION
- [2015458](/recalls/tc/2015458.md), 2015-10-08: Electrical
- [2014432](/recalls/tc/2014432.md), 2014-10-03: Electrical
- [14V614000](/recalls/nhtsa/14V614000.md), 2014-10-01: ELECTRICAL SYSTEM

## Other bulletins for the same vehicles and component

- [18\-NA\-180](/bulletins/11024324.md), 2025-10-16, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium\-Ion battery Exchange Process and Transaction Submission information.
- [18\-NA\-180](/bulletins/11023365.md), 2025-09-26, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium\-Ion battery Exchange Process and Transaction Submission information.
- [25\-NA\-087](/bulletins/11017595.md), 2025-05-02, Service bulletin: ELECTRICAL SYSTEM. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- [23\-NA\-001](/bulletins/11017252.md), 2025-04-28, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
- [13\-08\-116\-001K](/bulletins/11017244.md), 2025-04-25, Service bulletin: ELECTRICAL SYSTEM. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
- [24\-NA\-098](/bulletins/11017207.md), 2025-04-24, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information for dealers/technicians on Service Programming System \(SPS\) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
- [15\-06\-03\-001F](/bulletins/11017031.md), 2025-04-15, Service bulletin: ELECTRICAL SYSTEM. This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
- [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin: VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [18\-NA\-180](/bulletins/11013239.md), 2025-01-30, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium\-Ion battery Exchange Process and Transaction Submission information.
- [17\-NA\-331](/bulletins/11013149.md), 2025-01-28, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information to the customer about the rear camera guidelines not being present at times due to the VBM taking over the rear camera option.

JSON: [/v1/bulletins/10113352](/v1/bulletins/10113352)

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