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Law Office of Ernest "Bo" Hopmann III

Licensed to Practice in Texas and Arkansas

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Our firm filed class actions around the country and they were consolidated with other class actions in a multi-district action pending in the Eastern District of Michigan. Unfortunately our firm was not selected as one of the lead counsel, but we are monitoring the case. All new individual claims are on hold, pending the litigation and the class certification issue. If the case settles and you have a claim, you may recover money.

Here is what you need to do to preserve your claim: (1). Make sure you document the cause of the failure. Have your mechanic specify in the repair order the cause. (2) Keep all repair receipts. You will need these to prove to GM you had one of the class defects and the cost of repair. (3) Call GM's customer service hot-line and register a complaint. The reason to do this is to make sure they have your name, phone number and know you are complaining about an a/c issue. They will give you a complaint number and if the case settles, they are more likely to contact you to obtain your documentation. (4) Try to monitor the situation.

Unfortunately, the case is moving at a slow pace and we do not expect anything to happen until late 2019 at the earliest, and most likely 2020.

If you are really a belt and suspenders person, you can ask the mechanic to give you back the failed part that was replaced. That way, if GM ever demands physical proof of the defect, you have it.

In the meantime, please fill out the forms provided in the links below and we will keep your information on file. Please email the completed forms to [email protected]:

Documents: Agreement and Power of Attorney

General Motors A/C Issue Information Form


Below is a list of GM vehicles which we deem have a faulty air conditioning system. If it is your belief that you own a vehicle in this class then your rights could be affected. In the near future, our firms will be filing a Federal Class Action lawsuit against GM because of this product.

To be included in our case will NOT cost you anything upfront. Any expenses or attorney’s fees would only be assessed after a successful recovery. If there is no recovery, then you will not owe us anything.

If you or someone you know have one (or more) of the vehicles identified on this list, please consider joining our class action lawsuit by signing the Agreement and Power of Attorney and filling out the General Motors A/C Issue Information Form and returning both to [email protected] within the next seven (7) days. Time is of the essence, in that we are filing suit with those named persons for whom we have received their returned information.

If you have any other questions, please feel free to send us your questions via the contact form on this page.

Thank you in advance and we look forward to working on your case.

Bo Hopmann

Documents: List of GM Vehicles

                      Agreement and Power of Attorney

                      General Motors A/C Issue Information Form