As early as 2016, owners of some General Motors trucks and SUVs noticed that their vehicles may violently shake and shudder while driving. Sometimes, this shaking can become so intense that drivers lose control of their vehicles.

This symptom has been nicknamed the “Chevy Shake.”

News outlets and car enthusiast sites alike have reported this problem, which has since prompted multiple class action lawsuits. Initially, the cause appeared to elude consumers. Two class actions later attributed the alleged defect to two possible causes: an aluminum drive shaft and an 8-speed transmission.

If you are driving a GM vehicle that is part of a class action lawsuit, you may need to opt out to preserve your California Lemon Law rights and your ability to sue individually.

Which lawsuit says the “Chevy Shake” is caused by an 8-speed transmission?

Francis v. General Motors alleges that defective 8L45 and 8L90 transmissions were installed in some trucks and SUVs released by General Motors. This lawsuit represents consumers in every U.S. state except Florida, as Florida consumers are represented in a separate class action.

What is wrong with the 8-speed transmissions?

The 8L45 and 8L90 transmissions allegedly cause significant shaking and shuddering in some Chevrolet, GMC and Cadillac SUVs and trucks. Sometimes, the shaking is so violent that drivers feel like they have been hit by other vehicles.

This problem can occur when a driver is speeding up, slowing down, or trying to shift gears. One driver said that the harsh shift from “reverse” to “drive” nearly made him drive through his garage door.

Recent news reports also dubbed this symptom the “Chevy Shake,” with one investigative reporter receiving more than 90 complaints about the problem in his state alone.

Which vehicles allegedly have defective 8-speed transmissions?

Francis v. General Motors alleges that defective 8L90 and 8L45 transmissions were installed in the following vehicles:

• 2015–2019 Chevrolet Silverado
• 2017–2019 Chevrolet Colorado
• 2015–2019 Chevrolet Corvette
• 2016–2019 Chevrolet Camaro
• 2015–2017 Cadillac Escalade and Escalade ESV
• 2016–2019 Cadillac ATS, ATS-V, CTS, CT6 and CTS-V
• 2015–2019 GMC Sierra
• 2015–2019 GMC Yukon and Yukon XL
• 2015–2017 Yukon Denali and Denali XL
• 2017–2019 GMC Canyon

Where can I learn more about the shaking and juddering?

Jason Stoogenke of WSOCTV9 reported on the “Chevy Shake” in 2019, and has since then received more than 90 complaints from General Motors customers.

Which lawsuit says the “Chevy Shake” is caused by the drive shaft?

Kim Bostick v. General Motors alleges that the defect stems from the aluminum drive shaft. This component, also known as the “propeller shaft” or “prop shaft,” is intended to transfer power from the engine to the wheels and thereby make the wheels spin.

What is wrong with the drive shaft?

The drive shaft allegedly causes the vehicle to shake so violently that drivers may be unable to control their vehicles. This shaking can cause the drive shaft to deteriorate over time, after which the shaft drops to the ground and makes the vehicle undriveable.

Complaints about Chevy Shake were reported to news outlets as far back as 2017, with one consumer giving his Chevy Silverado the nickname Shake-arado.

Which vehicles allegedly have a defective drive shaft?

Kim Bostick v. General Motors alleges that defective drive shafts were installed in the following trucks and SUVs:

• 2015–2020 Cadillac Escalade
• 2014–2019 Chevrolet Silverado
• 2015–2020 Chevrolet Suburban
• 2015–2020 Chevrolet Tahoe
• 2014–2019 GMC Sierra
• 2015–2020 GMC Yukon and Yukon XL

Where can I learn more about this defect?

Jessica McMaster of 41 Action News reported on the defect in 2017, interviewing GM consumers and compiling footage of the “Chevy Shake” phenomenon.

What do these lawsuits mean for me?

If you have a GMC, Chevrolet or Cadillac vehicle that experiences the “Chevy Shake,” you may be a part of at least one class action lawsuit. If a suit becomes certified, that means a judge has approved the suit to go forward. You will have to opt out of the class action suit to preserve your right to file an individual lemon law case.

What do I get from opting out?

You have to opt out if you want to retain your right to sue individually. If you stay in the class action, you waive your right to sue as an individual both during and after the settlement. Additionally, class action lawsuits often have thousands of members. Individual members of class action suits may only get meager cuts of the final settlement.

If you opt out and sue as an individual, you may sue for charges more specific to your situation and receive a greater settlement as a result.

How do I opt out of a class action lawsuit?

Typically, those affected by a class action will receive a notice that outlines the allegations made in the lawsuit and tells consumers that they retain the right to opt out of the suit. These notices usually include instructions on how to opt out. However, it is best to consult an attorney on the specifics of opting out, such as opt-out deadlines.

I’d like more information. What do I do next?

If your Cadillac, Chevrolet or GMC vehicle shakes while you drive, you may have a lemon. If you have any further questions about the “Chevy Shake” or would like a free consultation, fill out our submission form at the bottom of this page or call us at 877-222-2222.

Otherwise, contact us here!