# Service bulletin PI0421C

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: 10126161
- Published by NHTSA: 2017\-12\-22
- Manufacturer's number: PI0421C
- Manufacturer's date: 2012\-11\-28
- NHTSA component: PARKING BRAKE:DRIVELINE:HYDRAULIC:ACTUATOR

## NHTSA's summary

This preliminary information bulletin provides a procedure to remove and replace the clutch actuator cylinder elbow seal for concerns regarding a fluid leak after clutch actuator replacement.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2012/MC-10126161-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2012/MC-10126161-0001.pdf)

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

## Components

Brakes, Parking brake

## Vehicles listed

- 2011 to 2013 CHEVROLET CRUZE
- 2012 to 2013 CHEVROLET SONIC

## Other bulletins for the same vehicles and component

- [PI1410B](/bulletins/10137680.md), 2018-05-21, Service bulletin: PARKING BRAKE. This preliminary informational bulletin provides information regarding the normal characteristic of instrument panel red brake light intermittently comes on.
- [99\-04\-20\-002I](/bulletins/10114262.md), 2017-08-15, Service bulletin: PARKING BRAKE:DRIVELINE. This informational bulletin explains a normal condition for what and how the drive line can clunk.
- [14748A](/bulletins/10089956.md), 2017-01-31, Service bulletin: PARKING BRAKE. "14748A \- SPECIAL COVERAGE \(REVISED POPULATION\). GM HAS RECEIVED A SMALL NUMBER OF REPORTS REGARDING 2010 \(NON NORTH AMERICAN\), 2011 AND 2012 MODEL YEAR CHEVROLET CRUZE VEHICLES EQUIPPED WITH A MANUAL TRANSMISSION \(RPO MZ0, MF3 OR MR5\) EXPERIENCING UNINTENDED MOVEMENT AFTER BEING PARKED ON AN INCLINED SURFACE. THE AFFECTED VEHICLES ARE EQUIPPED WITH A SELF\-ADJUST PARK\-BRAKE SYSTEM. THE SELF\-ADJUSTING PARK\-BRAKE SYSTEM ON THESE VEHICLES MEETS ALL RELEVANT REGULATORY STANDARDS FOR PARK\-BRAKE PERFORMANCE. BUT IF A DRIVER PARKS A VEHICLE WITH THESE FEATURES ON A SLOPE AND EXITS THE VEHICLE WITHOUT \(I\) FIRMLY ENGAGING THE PARK BRAKE IN ACCORDANCE WITH THE OWNER’S MANUAL INSTRUCTIONS AND \(II\) ENGAGING THE TRANSMISSION IN GEAR, THE VEHICLE COULD ROLL AWAY AND CAUSE A CRASH. TO HELP ENSURE THAT THE CONDITION DESCRIBED ABOVE DOES NOT OCCUR, GM IS SENDING LETTERS TO ALL INVOLVED CUSTOMERS TO REMIND THEM OF THE CORRECT PROCEDURE FOR PARKING THEIR VEHICLE, AS SPECIFIED IN THE VEHICLE’S OWNER MANUAL."
- [14748](/bulletins/10089955.md), 2017-01-31, Service bulletin: PARKING BRAKE; POWER TRAIN:MANUAL TRANSMISSION. "14748 \- SPECIAL COVERAGE. GM HAS RECEIVED A SMALL NUMBER OF REPORTS REGARDING 2011\-2012 MODEL YEAR CHEVROLET CRUZE VEHICLES EQUIPPED WITH A MANUAL TRANSMISSION \(RPO MZ0, MF3 OR MR5\) EXPERIENCING UNINTENDED MOVEMENT AFTER BEING PARKED ON AN INCLINED SURFACE. THE AFFECTED VEHICLES ARE EQUIPPED WITH A SELF\-ADJUST PARK\-BRAKE SYSTEM. THE SELF\-ADJUSTING PARK\-BRAKE SYSTEM ON THESE VEHICLES MEETS ALL RELEVANT REGULATORY STANDARDS FOR PARK\-BRAKE PERFORMANCE. BUT IF A DRIVER PARKS A VEHICLE WITH THESE FEATURES ON A SLOPE AND EXITS THE VEHICLE WITHOUT \(I\) FIRMLY ENGAGING THE PARK BRAKE IN ACCORDANCE WITH THE OWNER’S MANUAL INSTRUCTIONS AND \(II\) ENGAGING THE TRANSMISSION IN GEAR, THE VEHICLE COULD ROLL AWAY AND CAUSE A CRASH. TO HELP ENSURE THAT THE CONDITION DESCRIBED ABOVE DOES NOT OCCUR, GM IS SENDING LETTERS TO ALL INVOLVED CUSTOMERS TO REMIND THEM OF THE CORRECT PROCEDURE FOR PARKING THEIR VEHICLE, AS SPECIFIED IN THE VEHICLE’S OWNER MANUAL. "
- [PI0812](/bulletins/10071248.md), 2016-06-13, Service bulletin: PARKING BRAKE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
- [14733](/bulletins/10057970.md), 2015-07-20, Service bulletin: PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE. THIS TSB CONTAINS AN OWNER NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. GENERAL MOTORS 2013\-2015 CHEVROLET SONIC RS OR SONIC DUSK EQUIPPED WITH FOUR WHEEL DISC BRAKES MAY HAVE A CONDITION IN WHICH THE PARK BRAKE CABLE RETAINER CLIP MAY BE MISSING, WHICH CAN CAUSE CABLE FREEZING OR CORROSION. \*LJ
- [14733](/bulletins/10057654.md), 2015-06-17, Service bulletin: PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE. GENERAL MOTORS: TSB CONTAINS OWNER NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. 2013\-2015 CHEVROLET SONIC OR SONIC DUSK EQUIPPED WITH FOUR WHEEL DISK BRAKES MAY BE MISSING A PARK BRAKE CABLE RETAINER CLIP. \*LJ \(RPO J67\)
- [PI\-0812](/bulletins/10047363.md), 2012-11-27, Service bulletin: PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE. CHEVROLET: DUE TO ADJUSTING NUT BEING OUT OF ALIGNMENT OR ADJUSTMENT, THE PARKING BRAKE LEVER/HANDLE MAY BE LOOSE BUT DOES NOT INTERFERE WITH THE PARK BRAKE ENGAGEMENT. MODEL 2012 SONIC. \*PE
- [PI\-0796\-A](/bulletins/10047260.md), 2012-11-20, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; PARKING BRAKE:INDICATOR LIGHT. CHEVROLET: WHEN FLASHING ELECTRIC PARKING BRAKE LIGHT MESSAGE IS DISPLAYED, THE REPORT CODE, C027D, IS CURRENT OR IN HISTORY AND SOFTWARE CALIBRATION UPDATE TO ADDRESS ISSUE FOR REPROGRAMMING ELECTRONIC PARKING BRAKE CONTROL MODULE. MODEL 2013 VOLT. \*PE

JSON: [/v1/bulletins/10126161](/v1/bulletins/10126161)

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