2016 - 2019 Corvette: Service Bulletin: #21-NA-109: Diagnostic Information on Engine Vibration - (May 3, 2021)
Estimated Reading Time: 2 Minutes#21-NA-109: Diagnostic Information on Engine Vibration - (May 3, 2021)
| Subject: | Diagnostic Information on Engine Vibration |
This bulletin replaces PIP5503B. Please discard PIP5503B.
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Brand: |
Model: |
Model Year: |
VIN: |
Engine: |
Transmission: | ||
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Cadillac |
CTS-V |
2016 |
2019 |
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4.3L (LV1, LV3), 5.3L (L82, L83, L84) or 6.2L (L86, L87, LT1 or LT1 w/o Z52 (Corvette only), LT4) |
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Escalade Models |
2015 |
2020 |
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Escalade Models |
2021 |
2021 |
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Chevrolet |
Camaro |
2016 |
2021 |
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Corvette |
2016 |
2019 |
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Express |
2018 |
2021 |
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Silverado |
2014 |
2018 |
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Silverado LD |
2019 |
2019 |
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Silverado 1500 (New Model) |
2019 |
2019 |
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Silverado 1500 |
2020 |
2021 |
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Suburban |
2015 |
2020 |
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Suburban |
2021 |
2021 |
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Tahoe |
2015 |
2020 |
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Tahoe |
2021 |
2021 |
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GMC |
Savana |
2018 |
2021 |
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Sierra |
2014 |
2018 |
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Sierra Limited |
2019 |
2019 |
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Sierra 1500 (New Model) |
2019 |
2019 |
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Sierra 1500 |
2020 |
2021 |
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Yukon Models |
2015 |
2020 |
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Yukon Models |
2021 |
2021 |
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Involved Region or Country |
North America, Europe, Russia, Middle East, Israel, Chile, Colombia, Ecuador, Venezuela, Japan, GM Korea Company, Cadillac Korea (South Korea), China, Thailand, Singapore, Philippines, Other Africa, Australia/New Zealand |
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Condition |
Some customers may have a concern with an engine vibration. This vibration may occur when vehicle is stationary or accelerating from a stop. It may be found that the engine oil was recently changed. |
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Cause |
This may be caused by the engine being overfilled with oil. |
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Information |
If the above concern is encountered, it is recommended to check the engine oil level. Refer to the vehicle owner manual for details on correctly checking engine oil level. A vibration caused by a crankcase overfilled with engine oil will typically display Engine 1 (E1) as the dominant vibration when monitored with the PICO Scope.
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Version |
1 |
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Modified |
Released May 03, 2021 |