Service bulletin PIC5720B

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10095525
Published by NHTSA	2017-03-17
Manufacturer's number	PIC5720B
Manufacturer's date	2016-02-18
NHTSA component	ELECTRICAL SYSTEM:WIRING; SERVICE BRAKES, AIR:ANTILOCK

NHTSA's summary

THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS NEEDED TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE BUZZ OR HUM NOISE IS HEARD IN THE RIGHT FRONT AT TIMES. ALSO MAY HAVE A ANTILOCK BRAKING SYSTEM MALFUNCTION INDICATOR LAMP, SERVICE BRAKE ASSIST MESSAGE OR SERVICE ENGINE SOON MALFUNCTION INDICATOR LAMP MAY BE DISPLAYED. THE FOLLOWING DIAGNOSTIC TROUBLE CODE MAY BE SET C027B, C0040 AND P0CBE. THE TECHNICIAN WILL INSPECT FOR THE WIRE HARNESS UNDER THE HOOD TO BE CONTACTING THE CRANK PULLEY, AIR CONDITIONING COMPRESSOR PULLEY OR ACCESSORY DRIVE BELT DUE TO MISROUTING OR NOT SECURED PROPERLY. REPAIR WIRING AS NEEDED OR REPLACE THE HARNESS, CORRECT ROUTING AND PROPERLY SECURE. ONCE WIRING REPAIRS ARE COMPLETE CONFIRM PROPER BRAKE BOOSTER VACUUM PUMP OPERATION.

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, Electrical system, Anti-lock brakes, Wiring and fuses

Trouble codes named

C0040, C027B, P0CBE

Vehicles listed
BUICK LACROSSE	2012, 2013, 2014
BUICK REGAL	2012, 2013, 2014
CHEVROLET IMPALA	2014
CHEVROLET MALIBU	2013, 2014
CHEVROLET MALIBU ECO	2013 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
13V566000	2013-11-13. SEATS:FRONT ASSEMBLY:POWER ADJUST; ELECTRICAL SYSTEM:WIRING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
PIP5146	2024-04-22. Service bulletin. Chatter Or Bind Feel On Turns.
130089008	2023-12-11. Service bulletin. GM Wiring Repair Strategy Information
PIT5962	2023-01-30. Service bulletin. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
PIT5569B	2022-08-15. Service bulletin. This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.
PIC5852C	2020-08-10. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that when attempting to start vehicle "No Fob Detected" message is displayed. Technician will find the Key FOB works and the vehicle will start with the key FOB is placed in the pocket. Technician will need to replace the Key FOB with the Key FOB with Passive Entry Passive Start.
PIT3271J	2019-12-09. Service bulletin. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
100089005G	2019-05-13. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
PIC5894A	2019-04-08. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have multiple Instrument Panel Cluster warning indicators on and/or warning messages being displayed on the Driver Information Center. Technician may find Diagnostic Trouble Codes U0073, U0077, U0078, U0121, U0126, U0151, U0155, U0164, U0186, U0415, U0422, and U0428. Technician will need to inspect for a pinch DLC branch in the Instrument Panel harness behind the Instrument Panel Carrier.
17NA154	2019-03-18. Service bulletin. This technical bulletin provides a procedure to replace the side object detection wiring and harness if inspection finds water and/or corrosion in the harness or modules.
100089005H	2019-03-18. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.