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2021 Chevy Trailblazer RS AWD
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Discussion Starter · #1 ·
A stop sale order has been given for several GM models, including the Trailblazer. This means that there is most likely a recall in process. This one is in regards to the brake boost system. The GM campaign number for this forthcoming recall will be A202307260.

 

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2021 TB Zues Bronze Activ
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Now I have to wonder if the SERVICE CHASSIS message my wife saw last week is related to this recall that is coming. Got to wonder if we should park the car since this does involve the BRAKES.
 

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What exactly does "If the sensors can't get accurate information, the brakes will not function as intended" mean? That's a very vague statement. Are we talking about complete brake failure or less assist meaning the brakes will feel like old school non power brakes? It would be nice to know the risk.

Steve
 

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I believe what I read is that they do not have a fix, nor the parts to fix. I am pretty sure there is a recall been submitted, as it affects other models like the Encore GX and Corvette. It may take some time to finalize The recall campaign. I just hope it doesn’t become an issue like the Ford Mustang, where the brake pedals are breaking off
 

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It is also a issue on like 3 or 4 Caddy's. I will not be pleased if my TB starts showing symptoms and I feel I have to PARK IT till they can fix it. They will be giving us a loaner car. With this hurting the Vette community and that cars over all image I think they will work quick to resolve it.
 

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I received a GM safety recall letter. It is for recall A202307260 and in bold letters it states Parts to repair your vehicle are not currently available.
It will involve replacing the electronic brake boost module. Another letter will be sent once parts are available.

It basically says there may have been a contamination of material during the production process.

It goes on to say,
If communication with the sensor is interrupted, electronics brake boost assist could be lost. If electronic brake boost assist is lost, a warning light and message may appear in the instrument panel and vehicle speed may be limited. Extra pedal force would be required to slow and stop the vehicle, increasing the risk of a crash.
 

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So had this happen to me last night. Was funny I was driving was just cruising the cluster of messages pops up and my brake pedal is dead I mind you completely dead. It actually forces the parking brake to lightly engage and you will have no instant stopping power period. If this happens immediately hit your hazards pull over and turn the car off for a few then turn it back on. You will still have the CEL triggered but the module will reset and you will have your brakes back again.
 

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Thank you @Trail Blazed and @TrashPandaPerformance for sharing your recall letter and first hand experience. This appears to be a serious recall issue, and one that should be communicated swiftly to current owners (We have not yet received any recall letter for our TB). It certainly should make owners apprehensive about driving their 2021 TB's.


Frequently Asked Questions (FAQs) for Safety Recall A202307260 Loss of Brake Assist These questions and answers are being provided to help GM dealers respond to inquiries from involved vehicle owners about the Safety recall identified above.

Q1) Which vehicles are involved?
A1) 2020-2021 model year Buick Encore GX, 2020 model year Cadillac CT4, CT5, XT4, Chevrolet Corvette, and 2021 model year Chevrolet Trailblazer vehicles.

Q2) What is the issue or condition?
A2) General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2020 model year Cadillac CT4, CT5 and XT4 vehicles, 2020 model year Chevrolet Corvette vehicles, 2020 – 2021 model year Buick Encore GX vehicles, and 2021 model year Chevrolet Trailblazer vehicles. Material used in a sensor connection in the electronic brake boost system in these vehicles may have been contaminated during the material supplier’s production process. Contamination of this material may cause an interruption of communication between the sensor and the brake boost system under certain conditions.

Q3) What symptoms may be experienced? What warning signs may be associated with the issue or condition described?
A3) If electronic brake boost assist is lost, a warning light and message may appear in the instrument panel and vehicle speed may be limited.

Q4) What is the remedy/repair? A4) Dealers will replace the electronic brake boost module. Q5) What is the safety risk? Is the vehicle safe to drive?
A5) If communication with the sensor is interrupted, electronic brake boost assist could be lost. Extra pedal force will be required to slow and stop the vehicle, increasing the risk of a crash.

Q6) Does the customer have to pay for this remedy/repair?
A6) No, this inspection/repair will be done at no cost to the customer.

Q7) Is the remedy/repair available now?
A7) No, when a remedy is available and/or sufficient quantity of parts are available, the recall bulletin will be released, and dealers can begin repairing vehicles.

Q8) What should customers do until recall repairs can be completed? Are there any special instructions?
A8) If special instructions are provided, they will be included in the notification letters to customers.

Q9) How can customers check to see if their vehicle is involved in this field action?
A9) Customers who own a vehicle involved in the field action will be notified by mail by General Motors, but they may also check their Vehicle Identification Number (VIN) for field actions in GM Owner Center at GM Recall Information | GM Recall Center | Pontiac, Oldsmobile, Saturn, HUMMER and SAAB Recalls or via NHTSA's website at Recalls Look-up by VIN (Vehicle Identification Number).

Q10) If customers are concerned, can they get a rental car or courtesy transportation?
A10) Courtesy transportation is available for customers whose vehicles are involved in this recall and are within the warranty coverage period for the warranty which is associated with this recall. Please refer to Warranty Administration Bulletin #17-NA-073: Field Action Courtesy Transportation Policy for further information.
 

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I checked my TB vin on a recall search thing and it came up clean. Maybe I am not part of this one?
I just checked mine again on the Chevy site and no recalls for me either. Maybe the early production models like ours were actually built right, lol. 😁 🤞

Steve
 

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Discussion Starter · #20 ·
VIN serial 13575. As of 11-15, not listed on the NHTSA recall search. Ownership began 29 May 2020.
 
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