Chevrolet Blazer EV Problems: 7 Issues Every Owner Should Know
2019-2025 model years · Based on 382+ owner reports · Last updated March 2026
According to Au7o's analysis of 382+ owner reports, the 2019-2025 Chevrolet Blazer EV has 7 documented known issues, with 3 rated critical by the Au7o research team. The most serious are Rear Parking Brake Wiring Harness Defect Causing Unintended Activation ($0-$0 repair), Rear Drive Unit Motor Insulation Failure Causing Power Loss ($0-$0 repair) and Door Striker Fracture Allowing Unexpected Door Opening ($0-$0 repair). The most commonly reported issue is Infotainment System Black Screen, Freezing, and Software Glitches with 180 owner reports. Across all issues, repair costs range from $0 to $4,000. Full technical analysis and DIY maintenance guides at au7o.io.
All 7 Known Issues
GM recalled approximately 40,233 Blazer EV vehicles from 2024-2025 model years due to a defect in the rear parking brake wiring harness. The defect can cause the parking brake to activate unintentionally while driving (causing rear wheel lock-up) or fail entirely when needed. Between August 2023 and May 2025, 97 complaints were filed, including two instances of rear-wheel lock-up while driving and one report of complete parking brake failure.
Common Symptoms
- Parking brake activates unexpectedly while driving
- Rear wheels lock up without driver input
- Parking brake warning light illuminated
- Parking brake fails to engage when activated
- Service parking brake message on display
How to Fix
Contact Chevrolet dealer for free recall repair. The dealer will inspect and replace the rear parking brake wiring harness as needed. Do not ignore parking brake warning messages. If you experience rear wheel lock-up while driving, pull over safely and have the vehicle towed to a dealer.
What Owners Are Using
Parts and tips from 97+ owners who fixed this issue
- NoteThis recall affects 40,233 Blazer EVs. Two rear-wheel lock-up incidents have been reported while driving. Check your VIN at nhtsa.gov immediately and schedule dealer service. This is a free repair under recall. Do NOT delay as wheel lock-up at speed is extremely dangerous
GM recalled certain 2024 Blazer EV vehicles where the electric motors in the rear drive units may have insufficiently insulated wires that can contact each other, resulting in an electrical short and loss of drive power. This manufacturing defect can cause sudden propulsion loss while driving, creating a serious safety hazard particularly at highway speeds.
Common Symptoms
- Sudden loss of propulsion power
- Reduced power warning message on display
- Vehicle enters limp mode unexpectedly
- Unusual sounds from rear axle area
- Propulsion system fault warning
How to Fix
Contact Chevrolet dealer to check recall eligibility. The rear drive unit motor will be inspected and replaced if insulation deficiency is found. This is a free repair under the recall. Do not drive the vehicle if you experience sudden propulsion loss - have it towed to the dealer.
What Owners Are Using
Parts and tips from 65+ owners who fixed this issue
- NoteThis is a safety recall for loss of propulsion. If you experience sudden power loss while driving, pull over safely immediately. Check your VIN at nhtsa.gov/recalls. The rear drive motor unit replacement is free under this recall
GM recalled certain 2024 Blazer EV vehicles where the door strikers may fracture, allowing the door to open unexpectedly while driving. A fractured door striker compromises vehicle structural integrity and occupant safety, especially at speed. The door may not properly latch or may open during side impacts.
Common Symptoms
- Door ajar warning light when doors are closed
- Door does not feel solidly latched when closed
- Clicking or unusual noise when closing a door
- Wind noise suggesting door seal issue
- Visible damage to door striker mechanism
How to Fix
Contact Chevrolet dealer immediately to check recall eligibility. Dealers will inspect and replace door strikers at no cost. Test each door by firmly pulling on the exterior handle with the door closed - any unexpected movement or noise warrants immediate dealer inspection.
What Owners Are Using
Parts and tips from 40+ owners who fixed this issue
- NoteA fractured door striker means the door could open while driving. This is an immediate safety concern. Check your VIN at nhtsa.gov and schedule dealer service immediately. Free repair under recall
The 2024 Blazer EV has widespread infotainment system issues including black screens, frozen displays, camera glitches, audio dropouts, CarPlay/Android Auto disconnects, virtual control malfunctions, and cluster display errors. The 17.7-inch touchscreen controls most vehicle functions including HVAC, making software failures particularly disruptive. GM has released multiple software campaigns but OTA updates have been problematic, with some updates causing additional issues like checkered screen backgrounds.
Common Symptoms
- Main touchscreen goes completely black
- Infotainment system freezes and becomes unresponsive
- Display shows checkered pattern after OTA update
- CarPlay or Android Auto disconnects repeatedly
- Backup camera feed cuts out or displays incorrectly
How to Fix
Schedule a dealer visit for the latest software campaign updates. Not all updates can be delivered OTA - some require USB installation at the dealer. If the screen goes black, try holding the home button for 10 seconds to force a restart. Contact Chevrolet customer service at 1-800-222-1020 if dealer cannot resolve the issue.
What Owners Are Using
Parts and tips from 180+ owners who fixed this issue
- TipWhen scheduling dealer service for infotainment issues, specifically ask them to check for software campaigns that are NOT showing as available on the vehicle. There is a known issue where the system reports being up to date when newer updates exist. The dealer must manually search for pending campaigns
- TipIf your screen shows a checkered background after an OTA update, try pressing the Hey Google button to access some functions while waiting for a fix. This is a known issue from recent OTA updates. Schedule a dealer visit for a manual USB-based software reinstall
The 2019+ Blazer infotainment system (Chevrolet Infotainment 3) suffers from screen lockups, lag, and unresponsive touch input. The screen can freeze on the backup camera view or refuse button and touch input. GM bulletin PIT5790A acknowledges the issue but initially had no fix available. Bluetooth and Apple CarPlay disconnections are also common. Some owners have had the radio module replaced.
Common Symptoms
- Touchscreen unresponsive or lagging
- Screen freezes on backup camera or other display
- Bluetooth audio disconnects randomly
- Apple CarPlay/Android Auto connectivity issues
- Volume and audio controls unresponsive
How to Fix
The Blazer uses the GM 9T50 (2.0T/2.5L FWD) or 9T65 (3.6L AWD) 9-speed automatic with similar shift quality concerns as other GM 9-speed applications. Harsh shifts, delayed engagement, and shudder at light throttle are reported. GM has released multiple TCM calibration updates.
Common Symptoms
- Harsh or clunky shifts
- Shudder at light throttle
- Delayed shift from Park
- Gear hunting on hills
How to Fix
TCM recalibration with latest software. Fluid exchange with Mobil 1 LV ATF HP. Most issues resolve with software updates.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- TipTSB 20-NA-136 specifically lists 2019 Blazer with 9T65 (RPO M3V) for 1-2 upshift slip/flare and hesitation 5-15 mph. First authorized step is TCM calibration update. If dealer says 'no calibration available', request second opinion - GM has released multiple 9T65 updates since 2019. Print TSB from NHTSA.gov and bring to appointment
- TipIf TCM reprogramming doesn't resolve harsh shifts, next step per TSB 20-NA-136 is valve body and solenoid pack inspection. P0756 (Shift Solenoid B Performance/Stuck Off) is a known 9T65 failure mode not resolvable by software. Solenoid pack is integral to valve body - both replaced together
- NoteIf Blazer experiences complete loss of drive, sudden neutral at highway speed, or recurring hard shifts after TCM updates, escalate to GM Customer Care (1-800-222-1020) and request field engineer review. Extended warranty or goodwill repair granted in documented repeat-failure cases on 9T65. Same transmission as Traverse, Equinox, GMC Terrain
The 2019+ Blazer with the 9-speed automatic transmission (9T50/9T65) develops a shudder during acceleration from a stop, particularly between 1st and 2nd gear. GM bulletin PIP5608J addresses TCC shudder/surge issues. The root cause involves excess lubrication on internal parts contaminating the transmission fluid. Some owners require torque converter or full transmission replacement.
Common Symptoms
- Shuddering during acceleration from stop
- Hesitation or jerking between 1st and 2nd gear
- Vibration at low speeds (20-40 MPH)
- Rough or delayed shifting
- Bucking sensation during light acceleration
How to Fix
Frequently Asked Questions
What are the most common Chevrolet Blazer EV problems?
According to Au7o's analysis of 382+ owner reports, the 2019-2025 Chevrolet Blazer EV has 7 documented issues. The most frequently reported are: Rear Parking Brake Wiring Harness Defect Causing Unintended Activation, Rear Drive Unit Motor Insulation Failure Causing Power Loss, Door Striker Fracture Allowing Unexpected Door Opening. Of these, 3 are rated critical and should be addressed promptly.
Is the Chevrolet Blazer EV reliable?
The 2019-2025 Chevrolet Blazer EV has 7 known issues documented across 382+ owner reports. 3 issues are rated critical: Rear Parking Brake Wiring Harness Defect Causing Unintended Activation and Rear Drive Unit Motor Insulation Failure Causing Power Loss and Door Striker Fracture Allowing Unexpected Door Opening. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Chevrolet Blazer EV problems?
Repair costs for known Chevrolet Blazer EV issues range from $0 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Rear Parking Brake Wiring Harness Defect Causing Unintended Activation, typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What year Chevrolet Blazer EV is the most reliable?
Reliability varies across model years of the Chevrolet Blazer EV. Based on owner reports, issues are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2019-2025 Chevrolet Blazer EV with 7 documented issues from 382+ owner reports.
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