More than 500 complaints have been filed with the NHTSA about the 2021 Chevy Trailblazer. Many drivers report brake failures, engine stalls, and transmission issues—some happening within the first few months of ownership.
If your Trailblazer suddenly loses power, struggles to shift gears, or has electrical malfunctions, you’re not alone. Some owners have even dealt with brakes that don’t engage properly, putting their safety at risk.
Chevy has issued multiple recalls, but repairs don’t always fix the problems. If your SUV keeps breaking down despite repeated trips to the dealership, it might qualify as a lemon. This article covers the most common problems, what Chevy has done about them, and how lemon law can help if you’re stuck with a defective vehicle.

Most Common 2021 Chevy Trailblazer Problems
Many 2021 Chevy Trailblazer owners have reported serious mechanical and electrical issues. Some problems affect safety, while others cause frustrating performance failures. Below are the most common complaints.
Brake Problems
Many 2021 Chevy Trailblazer owners have reported serious brake issues. Some say the brakes don’t engage, even when pressing the pedal hard. Others experience soft brakes that sink to the floor. A high-pitched squeal is another common complaint. While squealing isn’t always an emergency, it can be a warning sign of bigger problems.
If your brakes feel weak, unresponsive, or make strange noises, don’t wait. Stop driving and get them checked.
Chevy issued a recall in 2020 for a brake sensor problem. The defect caused delayed braking, making it harder to stop in time. The recall covered 3,677 vehicles under NHTSA Recall ID: 20V588.
Electrical Problems
Modern cars rely on electronic systems for safety and convenience. But when these systems fail, they can cause serious problems.
Many 2021 Chevy Trailblazer owners have reported electrical malfunctions. Common issues include:
- Door locks not working properly
- The car not recognizing when it’s in park
- Crackling speakers
- Auto start/stop failing
Some of these issues are just annoying, but others affect safety. If your car doesn’t recognize when it’s in park, it could roll away. If the start/stop system fails, your engine may stall at the wrong time.
If you notice electrical problems, get them checked right away. Small issues can sometimes turn into bigger ones if left unfixed.
Transmission Problems
Transmission issues can make a car hard to control. If your transmission fails, you may struggle to accelerate or slow down when needed. This can be dangerous, especially in traffic.
Many 2021 Chevy Trailblazer owners have reported:
- Turbo failure, leading to weak acceleration.
- The car not staying in park, increasing the risk of roll-away.
- Sudden shifting into park while driving.
If your car won’t stay in park, it could roll unexpectedly, especially on a hill. If it shifts into park while moving, it could cause sudden stops and loss of control.
How These Problems Might Qualify for Lemon Law Protection
If your 2021 Chevy Trailblazer has persistent problems, you might be eligible for lemon law protection. California lemon laws exist to protect consumers from defective vehicles. If your car has ongoing issues that the dealership can’t fix, you could get a refund, replacement, or cash compensation.
Now, you need to know that not every defective car is a lemon. Your Trailblazer must meet certain requirements, including:
- The issue affects the safety, value, or use of the vehicle.
- The dealership has tried multiple times to fix it with no success.
- The vehicle has spent a significant amount of time in the shop for repairs.
Brakes that don’t work, a transmission that shifts into park while driving, or an engine that keeps stalling are serious defects. If Chevy can’t fix these issues, you may have a strong lemon law case.

Steps to Take If You Think You Have a Lemon
If your 2021 Chevy Trailblazer keeps having the same problems, even after multiple repairs, you may have a lemon. But proving it takes proper documentation and the right legal steps. Here’s how to protect your rights and increase your chances of getting a refund, replacement, or cash settlement under the California lemon law.
1. Keep Detailed Records of Every Repair
Every time you take your vehicle to the dealership, make sure you:
- Get a copy of the repair order. This should list the issue, the dealership’s attempt to fix it, and the results.
- Keep notes on when the problem happens, how often, and under what conditions. For example, “The transmission shifts into park while driving at highway speeds. Happened three times this week.”
- Keep emails, texts, and call logs from the dealership and Chevrolet. These can be evidence if they admit the issue can’t be fixed.
2. Report the Problem to Chevrolet and the Dealership
Tell both Chevrolet and your dealership about the issue. You can:
- Call Chevrolet’s customer service and open a case.
- Send a formal letter (certified mail is best) explaining the problem and the failed repair attempts.
- Ask the dealership for a written statement if they say the issue is “normal” or “not fixable.”
3. Check California’s Lemon Law Requirements
California has one of the strongest lemon laws in the country. If your 2021 Chevy Trailblazer has a serious defect that Chevrolet can’t fix, you may qualify for a refund, replacement, or cash compensation under the California Lemon Law (Song-Beverly Consumer Warranty Act).
To be eligible in California, your car must meet one of these conditions:
- At least two repair attempts for a serious safety defect (like brake failure or sudden shifting into park).
- At least four repair attempts for any other major issue (like electrical malfunctions or engine problems).
- The vehicle has been in the shop for 30+ days (not necessarily in a row) for any warranty-covered issue.
You should note that California’s lemon law applies within the first 18 months or 18,000 miles of ownership. However, you may still have a case even if you’re past this window—especially if you reported the issue early and it remains unresolved.
4. Consult a Lemon Law Attorney
If your Trailblazer keeps breaking down, an experienced Sacramento lemon law attorney can:
- Review your records to see if you qualify.
- Handle negotiations with Chevrolet for a refund, new vehicle, or cash compensation.
- Take legal action if Chevrolet refuses to follow lemon law.
Many lemon law attorneys offer free consultations and work on a no-win, no-fee basis. That means you don’t pay unless you win your case.
Manufacturers often delay or deny claims. A lawyer pushes for faster results and makes sure you get what you’re owed.
Lemon Law Assist Help You Fight For Your Right!
The 2021 Chevy Trailblazer has caused frustration for many owners due to brake failures, transmission issues, and electrical problems. If your SUV has been in the shop multiple times for the same issue, you might have a lemon.
At Lemon Law Assist, we help consumers fight back against defective vehicles. If Chevrolet can’t fix your Trailblazer, you may be eligible for a refund, a replacement, or cash compensation—at no cost to you.
Lemon Law Assist has been helping consumers for over 10 years. We have represented thousands of clients and recovered millions in settlements for defective vehicle claims.
If your 2021 Chevy Trailblazer has persistent issues, we are here to help. Call us at 424-403-2820 or fill out our online form for a free case evaluation today!

Frequently Asked Questions
What Are the Most Common Problems With the 2021 Chevy Trailblazer?
Many 2021 Chevy Trailblazer owners have reported serious issues, including:
- Brake problems – Brakes failing to engage, soft brake pedals, and ABS malfunctions.
- Transmission issues – Sudden shifting into park, failure to stay in park, and turbo failures.
- Engine problems – Loss of power, overheating, and stalling.
- Electrical malfunctions – Faulty door locks, backup camera glitches, and start/stop system failures.
Are Chevy Trailblazers Reliable in 2021?
The 2021 Chevy Trailblazer has mixed reliability ratings. While some owners report a smooth driving experience, many have faced major mechanical and electrical issues. Common complaints include:
- Transmission failures
- Brake malfunctions
- Recurring electrical defects
If your Trailblazer has repeated defects that Chevrolet can’t fix, you may be eligible for lemon law protection.
Is There a Recall on the 2021 Chevy Trailblazer?
Yes. The 2021 Chevy Trailblazer has multiple recalls, including:
- Brake sensor failure – This could cause delayed braking. (NHTSA Recall ID: 20V588000)
- Missing seat bolts – This could cause seats to shift unexpectedly. (NHTSA Recall ID: 20V792000)
- Faulty emergency jack – Could break under weight. (NHTSA Recall ID: 20V650000)
- Incorrect tire information labels – This could lead to improper tire inflation. (NHTSA Recall ID: 20V684000)
You can check for open recalls by entering your VIN on the NHTSA website or contacting a Chevy dealer.
Do Trailblazers Have Transmission Problems?
Yes. Many 2021 Chevy Trailblazer owners have reported serious transmission issues, including:
- The vehicle shifting into park while driving
- Failure to stay in park, leading to roll-away risks
- Turbo failure, causing weak acceleration
Citations
- CarComplaints.com. (n.d.). 2021 Chevrolet Trailblazer Service Brakes Issues. https://m.carcomplaints.com/Chevrolet/Trailblazer/2021/brakes/service_brakes.shtml
- National Consumer Law Center. (n.d.). California Song-Beverly Consumer Warranty Act. https://library.nclc.org/book/consumer-warranty-law/126-california-song-beverly-consumer-warranty-act
- National Highway Traffic Safety Administration. (n.d.). 2021 Chevrolet Blazer Vehicle Information. https://www.nhtsa.gov/vehicle/2021/CHEVROLET/BLAZER
- National Highway Traffic Safety Administration. (2020). Recall Report: 20V-588. https://static.nhtsa.gov/odi/rcl/2020/RCLRPT-20V588-4713.PDF


