NHTSA ID Number: 10185727
Manufacturer Communication Number: PIT5771A
Summary
This preliminary information discusses the possibility of a vibration on hard acceleration and a need for diagnostic information.
2 Affected Products
Vehicles
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Bulletin No.: PIT5771A
Published date: 12/10/2020
Preliminary Information
PIT5771A Wobble Vibration On Hard Acceleration
Models
| Brand: | Model: | Model Years: | VIN: | Engine: | Transmissions: | |
| from | to | |||||
Chevrolet |
Equinox | 2020 | All | All | LYX | All |
| GMC | Terrain | 2020 | All | All | LYX | All |
| Involved Region or Country: | North America |
| Additional RPO/s: | LYX, SAL or SPM |
| Condition: | Wobble / Vibration the customer will typically state this occurs on hard acceleration, 30 to 70 MPH. (WOT) |
| Cause: | Possible drive line vibration, information needed. |
IMPORTANT: This PI is to address the above scenario ONLY.
If able to duplicate the concern, record the event using the Pico Scope with the CH-51450TA246 Triple Axis Sensor. If the Pico reading at the above mentioned speeds is T1 lateral above 40 mg or above 30 mg with 10 mg of T3 lateral, return the vehicle to the customer advising them there will be a bulletin released and a field fix for this concern early in the first quarter of 2021. If this is NOT the disturbance noted in the file review perform normal NVH diagnostics.
Version History
| Version | 2 |
| Modified | 09/08/2020 – Created on.
12/10/2020- Added test and resolution information update. |
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1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5771A
Published date: 12/10/2020
- Use your PicoScope 2000 Series as an advanced oscilloscope, spectrum analyzer, function generator, arbitrary waveform generator and decode over 30 serial protocols as standard out of the box.
- PicoScope 2204A 2 Channel Oscilloscope kit includes: USB 2.0 cable (USB 3.0/3.1 compatible), two x1/x10 passive probes and Quick Start Guide.
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- Arbitrary waveform generator
- Serial decoding
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- 25 MHz bandwidth, 500 MS/s maximum sampling rate, 48 kS capture memory and Up to 12 bits enhanced vertical resolution.
- Ultra-compact design, USB connected and powered. Travel-friendly and ideal for small-scale setups, it fits in a laptop bag.
- PS7 Software for Windows, Linux and Mac. PicoScope 7 has all the analysis tools you need to get answers quickly, whether carrying out a simple test, or debugging a complex design. New features are continuously being added through free software upgrades, meaning your PicoScope will keep improving!
- Use your PicoScope 2000 Series as an advanced oscilloscope, spectrum analyzer, function generator, arbitrary waveform generator and decode over 30 serial protocols as standard out of the box.
- PicoScope 2204A-D2 2 Channel Oscilloscope kit includes: USB 2.0 cable (USB 3.0/3.1 compatible) and Quick Start Guide.
- 10 MHz bandwidth, 100 MS/s maximum sampling rate, 8 kS capture memory and Up to 12 bits enhanced vertical resolution.
- Ultra-compact design, USB connected and powered. Travel-friendly and ideal for small-scale setups, it fits in a laptop bag. Unique commitment to product support, with regular free software updates and lifetime support provided by our technical team.
- PS7 Software for Windows, Linux and Mac. PicoScope 7 has all the analysis tools you need to get answers quickly, whether carrying out a simple test, or debugging a complex design. New features are continuously being added through free software upgrades, meaning your PicoScope will keep improving!
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