WenmarOpen by Wenmar Pro

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11009165
Published by NHTSA2024-10-25
Manufacturer's numberPIT6212B
Manufacturer's date2024-10-25
NHTSA componentSERVICE 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

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

Brakes

Trouble codes named

C1114

Vehicles listed
CADILLAC ESCALADE2024, 2025
CHEVROLET COLORADO2024, 2025
CHEVROLET SILVERADO 15002024, 2025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002024, 2025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 65002025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO EV2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2024
CHEVROLET TAHOE2024, 2025
GMC CANYON2024, 2025
GMC HUMMER EV PICKUP2024, 2025
GMC SIERRA 15002024, 2025 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002024 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002024 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2024, 2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
25V3900002025-06-12. SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING:SWITCH/SENSOR/FLOAT
24V6740002024-09-12. SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE; SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING: LAMP

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
25-NA-0642025-04-17. Service bulletin. 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.
N2524997502025-04-14. Service campaign. 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.
PIT6347A2025-03-17. Service bulletin. 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.
PIT63472025-03-02. Service bulletin. 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-0482025-02-17. Service bulletin. This service bulletin provides customer information for rear unwanted automatic braking, usually when reversing out of a garage or driveway.
21-NA-0432025-02-12. Service bulletin. 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-0192025-02-11. Service bulletin. This bulletin advises the tech to check other areas that may need repair before replacing the wheel speed sensor.
25-NA-0032025-02-11. Service bulletin. This technical bulletin provides a procedure on a rattle type noise heard from the brake pedal area.
25-NA-0032025-02-07. Service bulletin. This service bulletin provides repair information to correct a customer concern of a rattle type noise heard from the brake pedal area.