PIT5728A

Bulletin No.: PIT5728A
Published date: N/A
Preliminary Information
PIT5728A DTC P0606 C0021 Set In the BSCM After N192268090
Was Completed
Models
Brand:
Model:
Model Years:
VIN:
from
to
Engine:
Transmissions:
Chevrolet
Silverado 1500 (New Model)
2019
All
All
All
All
GMC
Sierra 1500 (New Model)
2019
All
All
All
All
Involved Region or Country North America
Condition
Some customers may comment after campaign N192268090 was completed, they
have Service Brake System, Reduced Engine Power, and Speed Limited messages on
the DIC. Along with these messages, a SES MIL will be on and the brake pedal may
feel hard. These issues may appear shortly after the campaign was completed, or
within a day or so later, depending on vehicle usage. When checking for DTC's the
Brake System Control Module will have set a P0606 and C0021.
GM Engineering is looking into this concern, but preliminary information indicates
the following could be contributing to the issue:
Cause
- Low battery voltage
- Using the Onstar Phone APP to remote start the vehicle
Correction:
Note: When performing campaign N192268090, or any programming event, it is critical to maintain proper
battery voltage by using a battery maintainer, preferably the GR8 or EL-52800 Diagnostic Charge Battery Station
(DCBS).
Perform the following:
1. Check both the positive and negative battery cable clamps and make sure they are fully installed onto the
battery post and properly tightened.
2. If the positive and negative battery cables are fully installed and tightened, grasp each battery cable near the
battery post and make sure they are secure and that they do not spin on the post.
3. Test the battery using the GR8 and then charge the battery using the GR8 or EL-52800 Diagnostic Charge
Battery Station (DCBS).. Record your ndings.
4. Clear All DTC's. Then start the vehicle and verify no warning messages. If none, then test drive the vehicle
above 40 mph for several minutes.
5. Park the vehicle, shut the ignition o , exit the vehicle and allow it to sit for at least 30 minutes, undisturbed.
6. Restart the vehicle and verify no warning messages or DTC's have reset. If none, test drive the vehicle again to
con rm the repairs.
7. Question the customer to see if they used the Onstar Phone App to remote start the vehicle. If so, then ask the
customer to refrain from using the Onstar remote start Phone APP until Engineering releases new calibrations.
When more information is available this PI will updated.
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following
labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage
information.
Labor Operation
2486028
Description
Complete Steps Listed (Perform Battery checks, Charging, DTC Checks,
Road Tests, Etc.)
Labor Time
1.0 Hr.
Version History
Version
Modi ed
2
12/20/2019 - Created on.
01/06/2020- Updated the Cause, Correction and Warranty sections.
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