NHTSA ID Number: 10210345
Manufacturer Communication Number: PIT5662G
TSB/Document Date: 2022-04-18
Summary
This Preliminary information communicates information to diagnose DTC C056D or C056E.
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TSB/Document ID: PIT5662G
Replacement Service Bulletin Number:
MFR Communication Date: 2022-03-25
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: PARKING BRAKE
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
Bulletin No.: PIT5662G
Published date: 03/25/2022
Preliminary Information
PIT5662G Service Parking Brake Message, Red Park Brake
Indicator Flashing & or Amber Parking Brake Wrench Indicator
Illuminated. DTC C056D, C056E or C0616 Could Have Other ABS
DTCs
Models
Brand:
Model:
Model
Years:
VIN:
from to
Engine: Transmissions:
Enclave
2018 - 2022
All
All All
All
XT5
2017 - 2022
All
All All
All
XT6
2020 - 2022
All
All All
All
Chevrolet
Blazer
2019 - 2022
All
All All
All
Chevrolet Silverado 1500 (New Model)
2019
All
All All
All
Chevrolet Silverado 1500
2020 - 2021
All
All All
All
2022
All
All All
All
Chevrolet Traverse
2018 - 2022
All
All All
All
Acadia
2017 - 2022
All
All All
All
Sierra 1500 (New Model)
2019
All
All All
All
Sierra 1500
2020 - 2021
All
All All
All
Sierra 1500 Limited (RPO J21, VIN Digit 12 = 4 or
less)
2022
All
All All
All
Holden
Acadia
2017 - 2022
All
All All
All
Silverado 1500 LTD (RPO J21, VIN Digit 12 = 4 or
less)
Involved Region or Country North America
Condition
Service Parking Brake Message, Red Park Indicator Flashing & or Amber Parking
Brake Wrench Indicator Illuminated. With DTC C056D, C056E or C0616 Could Have
Other ABS DTC's. If replacing the EBCM, high EPB actuator or circuit resistance will
not allow programming to complete and result in an error E6961.
Cause
Resistance in the Electronic Park Brake(EPB) circuit or Park brake actuator.
Correction:
Measure both rear park brake circuit resistance at the EBCM with the EPB actuators plugged in. Should be
0.6 or less on the circuit.
If resistance are above .6 ohm inspect wiring for excessive resistance and repair.
If wiring is ok, disconnect actuator and test resistance at the actuator, if greater than .6 ohms, replace
actuator.
If the actuator is replaced make sure the O ring is seated between the EPB actuator and caliper. Apply
dielectric grease to connector before plugging in actuator.
If you had programming error E6961 after repairing wiring or replacing actuator you may need to power
down the EBCM for over 5 minutes before programming.
Note: This PI may be converted to a Bulletin in the future if new information becomes available.
Warranty Information
For wiring repairs covered under warranty, please refer to latest version of bulletin 10-00-89-005 for warranty
information on wire/connector repairs.
Version History
Version 7
03/06/2019 - Created on.
04/25/2019 - Updated correction section
05/03/2019 - Updated to add 2019 Blazer, Silverado and Sierra T1XX.
07/19/2019 - Updated to add 2017 - 2019 Holden Acadia
01/09/2020 - Updated to change from 6 ohm to 0.6 ohms.
Modi ed
09/18/2020 - Updated to add inspect wiring for excessive resistance and repair. If wiring is ok,
disconnect actuator and test resistance at the actuator, if greater than .6 ohms, replace actuator.
08/19/2021- Updated to add 2020, 2021 and 2022 MY and DTC C0616
03/24/2022- Updated Silverado 1500 and Sierra 1500 Model List
© 2022 General Motors. All Rights Reserved.
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