Shudder Or Vibration From The Transmission – 2017-2019 Chevrolet Silverado & GMC Sierra

Bulletin No.: PIP5541A
Published date: 03/27/2019

Preliminary Information

PIP5541A Shudder Or Vibration From The Transmission

 

Models

Brand: Model: Model Years: VIN: Engine: Transmissions:
from to
Chevrolet Silverado 2017 – 2018 All All L5P (6.6L) MW7 Allison Transmission (LCT1000)
Chevrolet Silverado 2500/3500 2019 All All L5P (6.6L) MW7 Allison Transmission (LCT1000)
GMC Sierra 2017 – 2018 All All L5P (6.6L) MW7 Allison Transmission (LCT1000)
GMC Sierra 2500/3500 2019 All All L5P (6.6L) MW7 Allison Transmission (LCT1000)

 

Involved Region or Country North America and North America Export Regions
Condition Some customers may comment on any of the following conditions:

A vibration, shake or shudder during light throttle acceleration between 25 and 70 mph (40 and 112 km/h) steady state driving.

A shudder feeling that may be described as driving over rumble strips or rough pavement.

A shudder after the 2-3 shift.

Cause Possible engine performance issue.

 

Correction:

The use of the Pico scope will aid in determining if the above listed conditions are related to the engine or transmission.

Place the PICO Scope pick up on passenger seat track and drive the vehicle under the conditions that the concern can be duplicated.

Click the record button when the concern is present and save the file.

While reviewing the Pico file click the add vibration button and add E0.5.

If the Pico file shows E0.5 being the dominant disturbance as shown below the concern is not torque converter clutch shudder and may be an engine performance concern.

Pico scope

 

Additional SI Keywords

accel, accelerate, automatic, bite, chuggle, excessive, fire, fish, fish-bite, fishbite, fluctuation, fluid, hesitate, high, light, miss, miss-fire, misfire, RPM, slip, speed, strip, surge, tach, tachometer, TCC, vibrate

 

Version History

Version 2
Modified 01-03-2018 – Created on

03/27/2019 – Added better description of the amount of E0.5 disturbance. Added the 2019 model year.


Bulletin No.: PIP5541A
Published date: 03/27/2019

https://www.nhtsa.gov/recalls?nhtsaId=10156952

https://static.nhtsa.gov/odi/tsbs/2019/MC-10156952-9999.pdf

Download (PDF, 216KB)


 

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  • When a vehicle has a problem but no code has been set or when multiple / misleading codes have been set
  • As the best way to find charging and starting problems.
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  • To find intermittent wiring and connector faults.
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  • To eliminate guesswork and test individual components before they are replaced. This avoids "parts darts" where more and more parts are replaced until the fault goes away.
  • To find intermittent wiring and connector faults.
  • When a vehicle has a problem but no code has been set or when multiple / misleading codes have been set
  • As the best way to find charging and starting problems.

Last update on 2019-05-09 / Affiliate links / Images from Amazon Product Advertising API

Last update on 2019-05-09 / Affiliate links / Images from Amazon Product Advertising API

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