# Service bulletin PIT5662B

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: 10160977
- Published by NHTSA: 2019\-06\-10
- Manufacturer's number: PIT5662B
- Manufacturer's date: 2019\-05\-03
- NHTSA component: PARKING BRAKE

## NHTSA's summary

This Preliminary information communicates information to diagnose DTC C056D or C056E.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10160977-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10160977-9999.pdf)

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

## Components

Brakes, Parking brake

## Trouble codes named

C056D, C056E

## Vehicles listed

- 2018 to 2019 BUICK ENCLAVE
- 2017 to 2019 CADILLAC XT5
- 2019 CHEVROLET BLAZER
- 2019 CHEVROLET SILVERADO 1500
- 2018 to 2019 CHEVROLET TRAVERSE
- 2017 to 2019 GMC ACADIA
- 2019 GMC SIERRA 1500

## Other bulletins for the same vehicles and component

- [PIT5662G](/bulletins/10210345.md), 2022-04-18, Service bulletin: PARKING BRAKE. This Preliminary information communicates information to diagnose DTC C056D or C056E.
- [20\-NA\-207](/bulletins/10209097.md), 2022-03-16, Service bulletin: PARKING BRAKE:ELECTRICAL:CONTROL MODULE; ELECTRICAL SYSTEM; POWER TRAIN. This service bulletin informs the technician to inspect for a possible electrical concern at the ECM X2 electrical connector to correct a customer concern of Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P0333 Set.
- [PIT5662F](/bulletins/10201321.md), 2021-09-13, Service bulletin: ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; PARKING BRAKE. This Preliminary information communicates information to diagnose DTC C056D or C056E.
- [19NA136](/bulletins/10186069.md), 2021-02-01, Service bulletin: PARKING BRAKE; EQUIPMENT; POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode.
- [PIT5662D](/bulletins/10171261.md), 2020-02-10, Service bulletin: PARKING BRAKE. This Preliminary information communicates information to diagnose DTC C056D or C056E.
- [PIT5657B](/bulletins/10167438.md), 2019-11-12, Service bulletin: PARKING BRAKE. This Preliminary information communicates how to repair a loose shift cable bracket.
- [19NA035](/bulletins/10160125.md), 2019-05-20, Service bulletin: PARKING BRAKE:DRIVELINE:HYDRAULIC:ACTUATOR; PARKING BRAKE. This technical bulletin provides a procedure to validate if the parking pawl actuator is not working as intended, causing the parking pawl to engage while driving.
- [PIT5441C](/bulletins/10157027.md), 2019-04-08, Service bulletin: SERVICE BRAKES; EQUIPMENT; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; PARKING BRAKE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:ELECTRICAL; LANE DEPARTURE. This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles that may have an Object Detection System Message Diagnostic Trouble Codes U0075, U026A, U026B, U026C, U0265, U0268, and/or U0269 stored in the active safety module. Technician should inspect his Multiple Diagnostic Interface cable for damage. Technician should use the Multiple Diagnostic Interface on a like vehicle with object detection bus or theEL\-47955\-1 MDI 1, MDI 2 Self\-Test Loopback Adapter,if there are no issues found finish with diagnosing the customer\’s concern, if concern is present in the like vehicle replace the Multiple Diagnostic Interface cable.
- [PIT5657A](/bulletins/10156917.md), 2019-04-08, Service bulletin: PARKING BRAKE; PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE. This Preliminary information communicates how to repair a loose shift cable bracket.
- [18NA368](/bulletins/10154996.md), 2019-03-25, Service bulletin: ELECTRICAL SYSTEM; PARKING BRAKE. This technical bulletin provides a procedure to reset the parking assist module if the parking assist message is on when delivered to the dealership.

JSON: [/v1/bulletins/10160977](/v1/bulletins/10160977)

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