2021 Chevy Blazer Problems and Top Complaints – Is Your Car A Lemon?

Seats and electrical system issues among the top complaints received by the NHTSA from vehicle owners

Updated on Author: Brian Jones

Updated on Author: Brian Jones

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Everyone was excited to see the 2021 Chevy Blazer, especially since the automaker claims it has “head-turning form.” However, this model has turned into a big disappointment from the dangerous seating to the faulty electrical system.

Click on other model year to view more problems: 2019   2020   2022   2023

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NHTSA Complaints for the 2021 Chevy Blazer

Complaint CategoryNumber of Complaints
Service Brakes
Electrical System
Unknown Or Other
Fuel/propulsion System
Back Over Prevention: Rearview System Braking
Exterior Lighting
Forward Collision Avoidance: Automatic Emergency Braking

Problems with the Seats

Sitting in the Blazer should make a driver feel comfortable and safe, but neither is true.

Car Connection claims, “But it fits the Blazer with narrow seats that aren’t shaped as well as they should be.”

Sitting in the seats is more than uncomfortable, it’s scary. NHTSA Campaign Number 20V811000 shows that GM equipped this SUV with the wrong bolts at the fastening locations where the seat belt gets secured. If the wrong bolt is used, the seat belt might not remain attached, leaving passengers to fly free in an accident. This doesn’t sound like something any car should be dealing with, further proving that Chevy has created a massive lemon.

Electrical System Problems

It turns out that the electrical system is just as much of a problem with the Chevy Blazer models, leaving customers quite frustrated.

Here is one Car Problem Zoo complaint. “While driving the whole dash goes blank for a few second, then it reboots and eventually most of it comes back. However, it did this repeat this cycle and cannot tell if my signals are working or what my speed is. I have a video of it happening. The car has 2,700 miles. . I am taking to a dealership.”

Not surprisingly, the 2020 Chevy Blazer was known for electrical system problems that might not even be repaired in the newer SUVs. A class action lawsuit shows that owners were dealing with the car stereo reaching max volume levels unexpectedly without any input. This sudden loud sound is distracting and could easily lead to an accident. It appears there’s no better way to create a “head-turning form” than to blast out the eardrums of the user.

Your Lemon Law Legal Rights

Think you have a lemon? Sit back and let the experts work out your lemon case at no cost to you. The law makes Chevy pay legal fees. You may be able to get your lemon out of your life. Every year, auto manufacturers buy back, replace or pay cash settlements to thousands of ‘lemon’ owners like you.

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Brian Jones

About the Author:

Brian Jones spent more than 30 years working as an ASE Certified Master Tech and Parts Specialist at multiple dealerships. Brian has become an authority in the industry, traveling across the country to consult for car dealerships and contributing his expertise as a writer for several major automotive publications. In his spare time, Brian enjoys working on pickup trucks, muscle cars, Jeeps and anything related to motorsports.

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  • Teresa G

    Bought my 2021 Blazer mid 2022 new last one on the dealership lot. Had 35 miles on it. First month noticed electrical issues like dash going blank then reset. Loud blast of music without touching it. Turning off by itself. Trying to accelerate while foot on brake at a stop light. At 50,000 miles the fuel pump sensor has been replaced 3 times in under 4 months. 1 only lasted 20hours. I’m scared to drive it anymore. And my loan is 11 thousand more than current value. When my warranty goes out I’m doomed. Dealer mechanic calls it a Covid car.

  • Angie G

    May 8 noticed N oil leak; too to original dealership where purchased; they say no leak. Called GM! Took to local dealership. Replaced cam shaft seal; drove two weeks noticed leak again. Took back and they replaced Harmonic Balance. Picked it up 6/23 driven it two days and it is still leaking

  • Angie G

    I have a 2021 Chevrolet Blazer that I purchased on 3/06/21; my first trip back to dealership was from a sensor that took over 6 months to get in, had to be hauled in due to not cranking, taillights stay on after getting out of vehicle (they just replaced something for it); but said they couldn’t fix anything if it didn’t show up for them. The last episode was in March 2023. On 5/06/23 my husband noticed an oil leak under my car. He hauled it to dealership and they phoned to tell me it appeared to be an overfill, but nothing has been done since the last oil change months ago. It just started leaking Saturday and my brother said it was coming from rear main seal. Dealership has placed dye in it and says nothing is leaking. I am under 200 miles to my warranty is out! It is still at the dealership today! Beginning to get frustrated.

  • Jaime C

    I bought my 2021 Chevy Blazer at the end of January 2022 brand new off the dealer lot. I have since had all the dash lights go off a total of 8 times in a 10-15 minute to drive home from work. I have complained to my dealer that I felt the car jerking like the transmission was missing. I had the vehicle back at the dealer because there was a constant, loud ticking noise coming from the car each time the wheel was turned. Finally, they told me I had an axle that was bad. After waiting a week to have the axle replaced, they informed me that they found another problem with a wheel bearing. This was all before or at 5,000 miles. I now have only 7,000 miles on this vehicle in 9 months, and I have almost bald tires. I have also complained that the rear end of the vehicle lags as though power in not distributed correctly. They tell me that there is nothing they can do if the vehicle does not show any warning lights on the dash. They say that there is not a problem, but I can feel it when I drive!! I owned my last vehicle for 12 years. This new Blazer is less smooth to drive than my 2010 Dodge Journey. I cannot afford to purchase another vehicle, and I am becoming very worried that this purchase will not last me the next 5 years, let along 12 like my other. This vehicle cost over $50,000.00 and drives like it should have been less than ten.

  • Amanda

    Absolutely horrendous vehicle. Brakes squealing and grinding at the 5,000 mile marker, electrical is shot. The seats adjust themselves when the car is off! Car did not stay locked (more electrical issues) and was gone through by someone on the street!!

  • Christine W

    Very uncomfortable seats and transmission slipping

  • Maria R

    I have a 2021 chevy blazer premier and my rear brakes are grinding. Is this normal its not even a year old.

  • Douglas

    I bought a 2021 Blazer RS 3 months ago. A week ago I was standing just outside the passenger door with the keys in my pocket. Vehicle shut off after a couple minutes. When I turned the vehicle back on, the seats and mirrors wouldn’t reset to my position setting and the AC will not get cold. It just blows air. The seats now work to my settings but the AC still only blows air. Not getting cold. I noticed after about a week it was issuing the rubber piece on the corner of the gate that makes it sit girly against the vehicle when closed. Also noticed inside the door jams huge bubbles of paint near the rubber door seals.

  • Victoria M

    I have a 2021 Blazer 2LT. The fender/bumper pointed area just below the headlights both have broken clips and I can no longer go through the car wash! The dealer of course blamed the carwash. But if it were not loose and sticking out how would a piece of felt even get stuck there??? They want $150 to glue it! And said it would be a ‘temporary’ fix!!! SMH

  • Blazer i

    I have a 2021 Blazer that I bought in February 2021. I had to take it in the first time with an electrical issue having it less than a month and under 600 miles. It’s been in several times since. The dealership has now had my vehicle since the end of June and it’s mid August. Still no answers or when I’ll have it back. Looking more like I won’t have it back. I’m paying for a car I don’t even have. This is ridiculous!

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