2024 Chevrolet Blazer: What to check before buying

High-voltage system faults are the main pattern. Warnings for the high-voltage system and reduced acceleration appear, charging stops working, and some cars lose power or shut off while driving. Several reports place this within the first few thousand miles, some as early as 400 miles. Other owners describe the instrument cluster and infotainment screens going dark, waves of warnings that include power steering failure, and turn signal faults. One crash report blames unexpected braking for a rollover. Repeat dealer visits and software updates often fail to fix the problem.

The car brakes hard on its own. This often happens in reverse, where a trash can or a manhole cover can set off automatic emergency braking hard enough to injure people inside. A second pattern is total loss of brake assist. The pedal sinks, a brake assist failure message appears, and the problem clears after a restart. One owner reports it 4 times in the first 450 miles. Many complaints point to recall 25V433, with owners waiting months for parts. One crash report describes a rear-end collision where no safety system responded.

The rear parking brake engages on its own while the car is moving. Reports include reversing at 5 mph and driving at 20 mph, with abrupt stops and sometimes a Service Parking Brake message. One report lists back, neck, and whiplash injuries. Most complaints focus on recall 25V433. Parts are unavailable, cars that fail the recall inspection are held at dealers, and one owner was told parts would not arrive until January 2026. Another owner left the car at the dealer pending a buyback.

Automatic emergency braking fires with nothing ahead. Reports cover highway speeds of 55 to 65 mph, left turns, slow school lines, and dawn or dusk driving with cruise control on. The car may drop 15 to 20 mph or come to a full stop, which risks a rear-end collision from following traffic. Some owners report back pain or seatbelt bruising after these stops. Another describes brakes that lock and will not release. Dealers often blame overly sensitive sensors, and many owners turn the system off.

Glare from the glossy dashboard reflects onto the windshield in sunlight, especially when driving toward the sun. Owners say it hides pedestrians and animals at certain angles and blocks much of the passenger side. The second pattern is wipers that stop working without warning, sometimes in heavy rain or on the interstate, with the washer failing too. Wipers usually return after a restart. One report listing 20 injuries describes glare and false braking, not a wiper failure.

Transmission failures show up at low mileage. Symptoms include searching for gears, revving, jerking, a check engine light, whining, grinding, and rough or hesitant shifts. One car needed a faulty valve body, and parts are on national backorder, leaving cars at dealers with no repair date. On EV versions, one-pedal driving does not work in reverse, so the car lurches backward instead of creeping. Another EV report describes blank displays, grinding inside the dash, and vibration.

Few reports, but two involve crashes with 4 injuries between them. In one crash the airbags did not deflate right away. In the other, the owner blames the parking brake recall for a loss of control that ended on top of a parked pickup. In a third report, the curtain airbags deploy while going slowly over a speed bump. The car then shuts off and will not restart, and OnStar reports a crash that never happened.

The turn signal stalk snaps back too hard when it cancels after a turn. That flashes the opposite signal about three times and can mislead drivers behind. Engaging the right signal can also be difficult. The second pattern is a failed right rear LED tail lamp. The brake light and tail light go dark on that side, the signal flashes rapidly, and a lamp failure message appears. One dealer reports GM has no fix yet and told them not to attempt repairs.

Only a few reports. In one, the rear suspension is noisy from the start and then fasteners on the rear strut break at about 1,850 miles. The dealer advises against driving it, and the car sits for 51 days waiting on GM approval. Another report describes severe vibration and wobble at highway speed, like a wheel coming loose. A third complaint is mostly about an unrepaired brake recall.