PIP5962

Bulletin No.: PIP5962
Published date: 02/21/2024
Preliminary Information
PIP5962 Metallic Click Noise On Acceleration
Models
Brand:
Model:
VIN:
Model Years:
from
Engine:
to
Transmissions:
Chevrolet
Silverado 1500
2019 - 2024
All
All
All
All
GMC
Sierra 1500
2019 - 2024
All
All
All
All
Involved Region or Country North America
Additional Options (RPO)
Condition
SU7
Metallic click noise on acceleration from a stop in drive or reverse.
Cause
Noise originates from the axle housing to axle tube press interfaces on the axle housing of the SU7 rear axle.
Correction:
No correction is available at this time, trying to gauge full scope of issue. Do not replace any parts for this issue. Review the vehicle using the recording
procedure outlined below.
Note: Ensure you are using a Pico Scope purchased through the GM dealer tool network. Pico Scopes purchased outside of the GM dealer tool network
have di erent software, which will corrupt the le.
Note: For additional training and information on Pico Scope, visit the Center of Learning and search for course Pico Scope Noise, Vibration, and
Harshness Diagnostics Overview and Oscilloscope Diagnostic Kit Description and Operation within SI.
If you need to download or update the Pico Scope, follow the steps below:
1. Log into GM Global Connect.
2. Click on the "Departments" drop down menu and select "Service."
3. Under "Applications" on the service page, select "Special Tools and Software updates."
4. You will now be re-directed to www.gmtoolsandequipment.com (do not access this site directly as it requires the use of Global Connect to allow
downloads).
5. Click the link under "Software Downloads" for the latest Pico Scope software version and a new page will open.
6. Click the setup links and follow instructions to update the tool.
1. Place the Pico sensor on a suitable location as close to the di erential center section as possible. (drain/ ll plug, cover bolt any of the plug welds on the
RH axle tube – if any of them are at enough to accommodate the sensor etc)
Note: Ensure to keep the cable routed away from the exhaust.
2. Open the most current version of GM NVH
3. After completing the wizard, go back into the setup tab under Vibration Signal and select Single Channel. Select TA148 Interface in the "Box" drop down
and TA144 Microphone for the "Sensor" Drop down.
Note: If using 3 axis, use center channel only and set up as single axis.
4. Operate the vehicle to verify condition and record a Pico data le of the concern.
5. While the reviewed le is on the screen, click File Save. It should be formatted as .pddata
6. The next box allows you to save the vehicle information as well as customer information and notes in the Notes box. This could be sensor location,
sensor direction and even road surface name, etc. Click Ok when you are done adding information.
7. Review or play the le back on a PC with speakers and make sure volume is turned up or not muted. You should have a clear recording of the noise
and be able to hear it in the PICO le you just recorded.
If the noise was captured on the PICO le then there is no current repair direction. The noise although irritating dose not contribute to a durability issue.
If the noise was not captured in the PICO le then further diagnostics will need to be performed to determine the source location.
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
3086008
Description
Labor Time
Record axle housing noise using Pico scope
*This is a unique Labor Operation for Bulletin use only.
Version History
Version
Modi ed
1
02/21/2024 - Created on.
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.8 Hrs.