This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
full bulletin at NHTSA ↗2021 Chevrolet Equinox powertrain problems
moderate Owners of the 2021 Chevrolet Equinox have filed 16 NHTSA complaints about the powertrain at roughly $2,500 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See powertrain across all vehicles →
Complaints
16
Recalls
0
Avg fix
$2,500
| Model year | powertrain complaints |
|---|---|
| 2017 Equinox | 30 |
| 2018 Equinox | 61 |
| 2019 Equinox | 34 |
| 2020 Equinox | 34 |
| 2021 Equinox (this page) | 16 |
| 2022 Equinox | 10 |
| 2023 Equinox | 4 |
| 2024 Equinox | 11 |
| 2025 Equinox | 27 |
When does it fail?
Of the 16 powertrain complaints filed for the 2021 Chevrolet Equinox, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Powertrain accounts for 18% of all owner complaints filed against this vehicle, across 10 categories tracked.
No new NHTSA powertrain complaint has been filed on this vehicle in over 4 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
full bulletin at NHTSA ↗This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
full bulletin at NHTSA ↗This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
full bulletin at NHTSA ↗This service bulletin informs the technician of an alternate lift procedure that has been developed when the lift plate does not fit the top of the transmission case for 6T30, 6T35, 6T40, 6T45, and 6T50 Transmissions.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners consistently report multiple powertrain failure modes across this generation. Transmission problems stand out: vehicles get stuck out of park with engines running uncontrollably, stall without warning, fail to accelerate above 25 MPH, and lose the ability to shift gears correctly. One owner's 800-mile vehicle lurched forward from park with no provocation.
Driveshaft and half-shaft failures cause severe shaking and wobbling between 30–80,000 miles. One owner replaced the propeller shaft at 59,000 miles for $859 without knowing warranty might have covered it, then faced $1,500–$3,500 for body control module and rear differential repairs shortly after.
Cold-weather turbocharger overboost (code P0234) forces limp mode in sub-zero temperatures, dropping highway speeds to 30 MPH. Owners report one TSB (20-NA-227) exists for shudder/hesitation issues, but Chevy refuses full recall coverage. Brake vacuum pump failure was reported, completely disabling the braking system. Dealers frequently refuse diagnosis, demand high diagnostics fees, and claim vehicles are out of warranty despite mileage under 80,000.
Same Chevrolet Equinox powertrain reports on nearby years: 2018 · 2019 · 2020 · 2022
Failure modes owners describe
Shudder and hesitation at low speed
Front of vehicle shudders significantly and hesitates to respond when accelerating, no warning light. Recurring issue. Related to TSB 20-NA-227 per dealer diagnosis.
When: 62,000 miles
Symptoms owners cite: front-end shudder; acceleration hesitation; no warning light initially
Repairs/costs cited: TSB 20-NA-227 identified; manufacturer offered only partial coverage since TSB was not a recall. Vehicle not repaired.
Recalls/TSBs owners mention: TSB 20-NA-227; partial coverage offered but not completed as recall
Turbo overboost causing limp mode in cold weather
Engine power reduced mode activated in sub-zero temperatures, dropping vehicle speed from highway to 30 MPH. Code P0234 indicates turbocharger overboost. Condition persisted after temperature warming. Owner reports 1.5L turbo Equinox not tested adequately in cold climates.
When: Cold weather operation, minus 18°F
Symptoms owners cite: engine power reduced mode; sudden speed drop to 30 MPH; check engine light
Codes mentioned: P0234
Recalls/TSBs owners mention: Dealer stated vehicle was safe to drive despite reduced power
Transmission shift to park failure with electrical dysfunction
Vehicle failed to shift into park, could not shut off engine or restart. ESC and brake control module warnings displayed. Vehicle remained running with all electrics in idle mode for extended period, draining battery.
When: 48,653 miles (out of warranty)
Symptoms owners cite: transmission stuck out of park; engine will not shut off; engine will not restart; ESC warning; brake control module warning; electrical systems in idle mode
Repairs/costs cited: Dealer demanded $550 diagnostic fee; battery died after 2 days with vehicle running
Shaking and wobbling at various speeds
Vehicle shakes and wobbles at various speeds. No warning light. Independent mechanic replaced four tires but failure persisted. Suspected driveshaft or drivetrain failure per mechanic. Not repaired.
When: 67,000 miles
Symptoms owners cite: shaking and wobbling at various speeds; no warning light
Repairs/costs cited: Four tires replaced without resolving issue; driveshaft or drivetrain suspected
Transmission acceleration failure with engine power reduction
Vehicle failed to accelerate above 25 MPH with engine power reduced message and check engine light. Failure recurred after restart. Not diagnosed or repaired by dealer.
When: 60,371 miles
Symptoms owners cite: unable to accelerate above 25 MPH; engine power reduced message; check engine light
Engine stall with fuel pump suspected
Vehicle stalled while in turn lane and would not restart. Check engine light illuminated afterward. Owner suspects fuel pump flow issue based on online research noting similar failures in other 2021 Equinoxes. Chevrolet denied recall exists.
When: <UNKNOWN>
Symptoms owners cite: sudden engine stall; vehicle will not restart; check engine light
Recalls/TSBs owners mention: Chevrolet denied recall when contacted about similar issues in other 2021 models
Transmission holding failure causing unintended lurch
Vehicle with 800 miles parked in park with engine off suddenly lurched forward, jumped curb, knocked down fence, and collided with tree. Transmission did not hold vehicle in park as expected.
When: 800 miles (brand new)
Symptoms owners cite: vehicle lurched forward from park; transmission did not hold; unsmooth feel at 800 miles
Front half shaft failure with vibration
Front end wobbles and vibrates severely between 30-50 MPH. Dealer diagnosed faulty front half shaft requiring replacement. Owner informed of TSB but no manufacturer assistance offered. Not yet repaired.
When: 80,000 miles
Symptoms owners cite: front-end wobbling and vibration at 30-50 MPH
Repairs/costs cited: Front half shaft replacement needed
Recalls/TSBs owners mention: TSB referenced but no assistance offered
Propeller shaft failure with warranty dispute
Propeller shaft replaced at owner expense ($859). Six months later, body control module and possible rear differential replacement recommended at $1,500-$3,500. Owner unaware manufacturer warranty may have covered propeller shaft repair.
When: 59,000 miles for propeller shaft; under 69,000 miles for BCM/rear differential
Symptoms owners cite: propeller shaft failure; body control module fault suspected; possible rear differential issue
Repairs/costs cited: Propeller shaft replacement cost $859 out of pocket; BCM and rear differential estimated $1,500-$3,500
Transmission failure with stalling and gear shift malfunction
Transmission gave out suddenly, causing stalling, jumping, and inability to shift gears correctly. Owner notes this is a reported problem affecting multiple 2021 Equinoxes.
When: 75,607 miles
Symptoms owners cite: transmission failure; random stalling; jumping sensation; gear shift malfunction
Vacuum pump failure affecting brake system
Vacuum pump failure rendered brakes unusable while operating vehicle. Critical safety issue affecting brake function.
When: <UNKNOWN>
Symptoms owners cite: brakes became impossible to use; brake failure while driving
Synthesized from 16 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
It was a dark cold (minus 18) morning driving to work. All of the sudden a warning came on. The engine power is reduced mode came on and I went from highway speed to 30 mph instantly. I barely got home. I was terrified and the car would hardly go. Very dangerous. After much research because no dealer could get us in ( three week wait) we figured out what was causing it. Code P0234…
2021 Chevy equinox vacuum pump failed causing the breaking to become impossible to use while operating.
The contact owns a 2021 Chevrolet Equinox. The contact stated that while driving at speeds between 30 and 50 MPH, the front end of the vehicle started wobbling and vibrating severely. The vehicle was taken to the local dealer, who diagnosed the vehicle and determined that the front half shaft was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of…
The contact owns a 2021 Chevrolet Equinox. The contact stated while driving 20 MPH and depressing the accelerator pedal, the front of the vehicle shuddered significantly, and the vehicle hesitated to respond. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the failure was related to TSB Number: 20-NA-227. The…
Had powertrain trouble with your 2021 Chevrolet Equinox?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2021 Chevrolet Equinox?
It's a documented issue but not catastrophic. 16 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 16 complaints filed, powertrain issues most often appear around 67,343 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Chevrolet/Equinox.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.