# Service bulletin PI\-0785

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: 10046339
- Published by NHTSA: 2012\-10\-11
- Manufacturer's number: PI\-0785
- Manufacturer's date: 2012\-08\-01
- Replaces: PI\-0785\-A
- NHTSA component: SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

## NHTSA's summary

BUICK/CADILLAC/CHEVROLET/GMC: MASTER CYLINDER WAS UNBOLTED FROM BRAKE BOOSTER AT TIME OF APPLYING BRAKES WITH BRAKE PEDAL, THAT WAS LOW AND POSSIBLE CAUSE WAS SMALL VACUUM LEAK BETWEEN MASTER CYLINDER AND BRAKE BOOSTER WAS FOUND. CERTAIN MODELS 2009\-2013 OF BUICK, CHEVROLET, CADILLAC, GMC. \*PE UPDATED 10/15/12. \*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 to 2012 GMC ACADIA
- 2009 to 2012 GMC CANYON
- 2009 to 2012 GMC TERRAIN
- 2009 GMC TOPKICK

## 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.
- [17\-NA\-271](/bulletins/11011990.md), 2024-12-19, Service bulletin: WHEELS; SERVICE BRAKES. This service bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customer concern of wheel clicking.
- [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.
- [PIT5171C](/bulletins/10247732.md), 2023-12-26, Service bulletin: WHEELS; SERVICE BRAKES, AIR:ANTILOCK. Service Stability, Traction, ABS Rear Wheel Speed DTC Or Chassis Expansion
- [PIT5171B](/bulletins/10247731.md), 2023-12-26, Service bulletin: WHEELS; SERVICE BRAKES, AIR:ANTILOCK. Service Stability Traction ABS Rear Wheel Speed.
- [120232002A](/bulletins/10245766.md), 2023-12-04, Service bulletin: POWER TRAIN; BACK OVER PREVENTION; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID; STEERING; STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS; STEERING:HYDRAULIC POWER ASSIST:PUMP; SERVICE BRAKES. Power Steering Noise or Fluid Leak from Power Steering Pump, Gear or High Pressure Pressure Hose During Extreme Low Temperature Operation \(Replace Power Steering Fluid\)
- [17\-NA\-271](/bulletins/10225732.md), 2022-11-03, Service bulletin: WHEELS; SERVICE BRAKES, HYDRAULIC. This bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customers concern of wheel clicking.
- [15\-00\-89\-004E](/bulletins/10222777.md), 2022-10-11, Service bulletin: POWER TRAIN; SUSPENSION; ENGINE AND ENGINE COOLING; SERVICE BRAKES, HYDRAULIC; STEERING. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- [070316004D](/bulletins/10213760.md), 2022-06-13, Service bulletin: SERVICE BRAKES. This service bulletin provides information for tire pressure monitoring \(TPM\) system concerns.

JSON: [/v1/bulletins/10046339](/v1/bulletins/10046339)

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