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NHTSA ID Number: 10198880
Manufacturer Communication Number: 21NA109
Summary
This service bulletin provides diagnostic information for a customer concern of engine vibration.
92 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CADILLAC | CTS | 2015-2019 |
| CADILLAC | ESCALADE | 2015-2021 |
| CADILLAC | ESCALADE ESV | 2015-2021 |
| CHEVROLET | CAMARO | 2016-2021 |
| CHEVROLET | CORVETTE | 2016-2019 |
| CHEVROLET | EXPRESS | 2016, 2018-2021 |
| CHEVROLET | SILVERADO 1500 | 2014, 2017-2021 |
| CHEVROLET | SILVERADO 2500 | 2015-2019 |
| CHEVROLET | SILVERADO 4500HD | 2019 |
| CHEVROLET | SUBURBAN | 2015-2021 |
| CHEVROLET | TAHOE | 2015-2021 |
| GMC | SAVANA | 2016, 2018-2021 |
| GMC | SIERRA 1500 | 2014, 2019-2021 |
| GMC | SIERRA 2500 | 2015-2018 |
| GMC | SIERRA DENALI | 2015-2019 |
| GMC | YUKON | 2015-2021 |
| GMC | YUKON XL | 2015-2021 |
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.
Cause
This may be caused by the engine being overfilled with oil.
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.
• If the engine oil level is confirmed to be overfull, verify if the crankcase was overfilled with engine oil or is contaminated by an outside substance such as fuel or coolant.
• If the engine was overfilled with only engine oil, adjust the oil level and re-evaluate the concern (possibly the result of the engine oil having been overfilled during an oil change or maintenance service).
• If the engine oil level was overfull as a result of contamination, determine the source of the contamination and repair as needed.
SEOCONTENT-START
Service Bulletin Bulletin No.: 21-NA-109
Date: May, 2021
INFORMATION
Subject: Diagnostic Information on Engine Vibration
This bulletin replaces PIP5503B. Please discard PIP5503B.
Brand: Model:
Model Year: VIN: Engine: Transmission:
from to from to
Cadillac
CTS-V 2016 2019
— —
4.3L (LV1,
LV3), 5.3L
(L82, L83,
L84) or 6.2L
(L86, L87,
LT1 or LT1 w/
o Z52
(Corvette
only), LT4)
—
Escalade
Models 2015 2020
Escalade
Models 2021 2021
Chevrolet
Camaro 2016 2021
Corvette 2016 2019
Express 2018 2021
Silverado 2014 2018
Silverado LD 2019 2019
Silverado
1500 (New
Model)
2019 2019
Silverado
1500 2020 2021
Suburban 2015 2020
Suburban 2021 2021
Tahoe 2015 2020
Tahoe 2021 2021
GMC
Savana 2018 2021
Sierra 2014 2018
Sierra
Limited 2019 2019
Sierra 1500
(New Model) 2019 2019
Sierra 1500 2020 2021
Yukon
Models 2015 2020
Yukon
Models 2021 2021
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
Page 2 May, 2021 Bulletin No.: 21-NA-109
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.
Cause This may be caused by the engine being overfilled with oil.
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.
• If the engine oil level is confirmed to be overfull, verify if the crankcase was overfilled
with engine oil or is contaminated by an outside substance such as fuel or coolant.
• If the engine was overfilled with only engine oil, adjust the oil level and re-evaluate the
concern (possibly the result of the engine oil having been overfilled during an oil
change or maintenance service).
• If the engine oil level was overfull as a result of contamination, determine the source of
the contamination and repair as needed.
Version 1
Modified Released May 03, 2021
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-109
Date: May, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10198880
MC-10198880-9999.pdf 509.277KB
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NHTSA ID Number: 10171264
Manufacturer Communication Number: PIP5503B
Summary
This Preliminary information communicates to the dealer additional information on checking for the engine crankcase being overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminants and adjust the engine oil level as needed.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5503B
Published date: 01/10/2020
https://www.nhtsa.gov/recalls?nhtsaId=10171264
MC-10171264-9999.pdf 101.089KB
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NHTSA ID Number: 10154577
Manufacturer Communication Number: PIP5503A
Summary
This Preliminary information communicates to the dealer additional information on checking for the engine crankcase being overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminants and adjust the engine oil level as needed.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5503A
Published date: 12/11/2018
https://www.nhtsa.gov/recalls?nhtsaId=10154577
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NHTSA ID Number: 10118273
Manufacturer Communication Number: PIP5503
Summary
This Preliminary information communicates to the dealer additional information on checking for the engine crankcase being overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminants and adjust the engine oil level as needed.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5503
Published date: 06/19/2017
https://www.nhtsa.gov/recalls?nhtsaId=10118273
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