# Service bulletin 4540

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: 10023732
- Published by NHTSA: 2008\-01\-29
- Manufacturer's number: 4540
- Manufacturer's date: 2008\-06\-01
- Replaces: PIT4540A
- NHTSA component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER; SERVICE BRAKES, AIR

## NHTSA's summary

VEHICLE SHAKES OR VIBRATES AT HIGHWAY SPEEDS. \*NJ UPDATED 8/25/08. \*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, Brake master cylinder

## Vehicles listed

- 2007 BUICK RAINIER
- 2008 CHEVROLET TRAILBLAZER
- 2007 CHEVROLET TRAILBLAZER 360
- 2008 GMC ENVOY
- 2007 GMC ENVOY 360
- 2007 to 2008 SAAB 9\-7X

JSON: [/v1/bulletins/10023732](/v1/bulletins/10023732)

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