# Service bulletin PIT6212B

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: 11009165
- Published by NHTSA: 2024\-10\-25
- Manufacturer's number: PIT6212B
- Manufacturer's date: 2024\-10\-25
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike into the trucks electrical system which is causing DTC C1114 to set.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11009165-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11009165-9999.pdf)

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

## Components

Brakes

## Trouble codes named

C1114

## Vehicles listed

- 2024 to 2025 CADILLAC ESCALADE
- 2024 to 2025 CHEVROLET COLORADO
- 2024 to 2025 CHEVROLET SILVERADO 1500
- 2024 to 2025 CHEVROLET SILVERADO 2500
- 2024 CHEVROLET SILVERADO 3500
- 2024 CHEVROLET SILVERADO 4500
- 2024 CHEVROLET SILVERADO 5500
- 2025 CHEVROLET SILVERADO 6500
- 2024 to 2025 CHEVROLET SILVERADO EV
- 2024 CHEVROLET SUBURBAN
- 2024 to 2025 CHEVROLET TAHOE
- 2024 to 2025 GMC CANYON
- 2024 to 2025 GMC HUMMER EV PICKUP
- 2024 to 2025 GMC SIERRA 1500
- 2024 GMC SIERRA 2500
- 2024 GMC SIERRA 3500
- 2024 to 2025 GMC YUKON

## Recalls for the same vehicles and component

- [25V390000](/recalls/nhtsa/25V390000.md), 2025-06-12: SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING:SWITCH/SENSOR/FLOAT
- [24V674000](/recalls/nhtsa/24V674000.md), 2024-09-12: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE; SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING: LAMP

## Other bulletins for the same vehicles and component

- [25\-NA\-065](/bulletins/11017173.md), 2025-04-24, Service bulletin: STEERING; SERVICE BRAKES; FUEL/PROPULSION SYSTEM. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- [25\-NA\-064](/bulletins/11017097.md), 2025-04-17, Service bulletin: SERVICE BRAKES. This informational bulletin provides information on the brake system warning lamp illuminated on driver information center \(DIC\), brake pedal goes closer to the floor and/or is harder to push.
- [N252499750](/bulletins/11016957.md), 2025-04-14, Service campaign: SERVICE BRAKES. Certain vehicles listed above may have a condition in which the front brake lines are below torque specification. Dealers will inspect and if necessary, correct the front brake line torque to specification.
- [PIT6347A](/bulletins/11015642.md), 2025-03-17, Service bulletin: SERVICE BRAKES. This Preliminary information communicates an issue with ABS SES MIL / Service Brake System / Service StabiliTrak / BSCM DTC P0606 P0562 and dealers to perform additional battery and connection testing.
- [PIT6347](/bulletins/11014624.md), 2025-03-02, Service bulletin: SERVICE BRAKES. This Preliminary information communicates an issue with ABS SES MIL / Service Brake System / Service StabiliTrak / BSCM DTC P0606 P0562 and engineering is currently investigating.
- [24\-NA\-048](/bulletins/11014277.md), 2025-02-17, Service bulletin: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; SERVICE BRAKES. This service bulletin provides customer information for rear unwanted automatic braking, usually when reversing out of a garage or driveway.
- [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.
- [25\-NA\-019](/bulletins/11014138.md), 2025-02-11, Service bulletin: WHEELS; VEHICLE SPEED CONTROL; AIR BAGS; ELECTRICAL SYSTEM; SERVICE BRAKES. This bulletin advises the tech to check other areas that may need repair before replacing the wheel speed sensor.
- [25\-NA\-003](/bulletins/11014096.md), 2025-02-11, Service bulletin: SERVICE BRAKES; STRUCTURE:BODY. This technical bulletin provides a procedure on a rattle type noise heard from the brake pedal area.
- [25\-NA\-003](/bulletins/11013906.md), 2025-02-07, Service bulletin: SERVICE BRAKES; STRUCTURE:BODY. This service bulletin provides repair information to correct a customer concern of a rattle type noise heard from the brake pedal area.

JSON: [/v1/bulletins/11009165](/v1/bulletins/11009165)

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