# Service bulletin PIT\-4858

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: 10030125
- Published by NHTSA: 2009\-08\-06
- Manufacturer's number: PIT\-4858
- Manufacturer's date: 2011\-05\-01
- Replaces: PIT\-4858A
- NHTSA component: SERVICE BRAKES, ELECTRIC

## NHTSA's summary

GENERAL MOTORS: HYBRID BRAKE NOISE OR VIBRATION. BRAKES GROAN OR THUMP NOISES DURING BRAKING; BRAKE PEDAL PUSHBACK OR VIBRATION THAT MAY RESEMBLE A PULSATION AS THE VEHICLE COMES TO A STOP; A SLIGHT DROP IN THE BRAKE PEDAL WHEN COMING TO A STOP. \*PE UPDATED 6/27/11. \*PE

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Brakes

## Vehicles listed

- 2009 CADILLAC ESCALADE HYBRID
- 2009 to 2011 CHEVROLET SILVERADO
- 2008 CHEVROLET TAHOE HYBRID
- 2009 GMC SIERRA HYBRID
- 2008 GMC YUKON HYBRID

## Other bulletins for the same vehicles and component

- [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.
- [21\-NA\-043](/bulletins/11011709.md), 2024-12-10, Service bulletin: STRUCTURE:BODY; WHEELS; ENGINE; SERVICE BRAKES; UNKNOWN OR OTHER. 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.
- [PIP5596A](/bulletins/10253061.md), 2024-04-15, Service bulletin: SERVICE BRAKES; FUEL SYSTEM, GASOLINE. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
- [PIT5120A](/bulletins/10247720.md), 2023-12-26, Service bulletin: SERVICE BRAKES. Stabilitrak/Traction Control OFF With Red Brake Warning Lamp
- [PIT5005A](/bulletins/10247700.md), 2023-12-26, Service bulletin: EQUIPMENT; SERVICE BRAKES. Diagnostic Tip \- Service Trailer Brake Message And Unable To Clear DTCs
- [PIT4729E](/bulletins/10247669.md), 2023-12-26, Service bulletin: EQUIPMENT; SERVICE BRAKES. Adding Integrated Trailer Brake Controller RPO JL1.
- [PIT5161B](/bulletins/10247072.md), 2023-12-11, Service bulletin: SERVICE BRAKES. Bump Feel Or Clunk Noise After A Stop.
- [PIT4729E](/bulletins/10245308.md), 2023-11-20, Service bulletin: SERVICE BRAKES; TRAILER HITCHES. Adding Integrated Trailer Brake Controller RPO JL1.
- [23\-NA\-144](/bulletins/10242252.md), 2023-09-15, Service bulletin: SERVICE BRAKES. This technical bulletin provides information and a solution to a condition of Brake Pedal Moves or Self Applies at Full Turns.
- [PIT3665L](/bulletins/10226382.md), 2022-11-21, Service bulletin: SERVICE BRAKES. This Preliminary Information communication advises the technician that the Hydro\-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.

JSON: [/v1/bulletins/10030125](/v1/bulletins/10030125)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20PIT-4858&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10030125&vehicle=Service%20bulletin%20PIT-4858)