9-Speed Automatic Transmission Shift Quality
high- Typically appears
- 0–50k mi
- Estimated repair
- $150 – $1,800
Popular pick
2021 Chevrolet
BlazerSUV
2.0L Turbocharged Inline-4 or 3.6L V6 · SUV
The 2021 Chevrolet Blazer is a mid-size, car-based crossover SUV that GM revived under the storied Blazer nameplate after a long hiatus. Built in Mexico on GM's C1XX platform, it slots between the smaller Equinox and the three-row Traverse. It's styled aggressively for the segment and focuses on road manners and a sporty cabin feel over off-road capability. Two engines are offered: a 2.0L turbocharged four-cylinder producing 227 hp, and a 3.6L V6 making 308 hp. Both pair with a 9-speed automatic. FWD is standard; AWD is available on most trims. Neither powertrain is designed for serious towing or trail use — this is a suburban commuter and highway cruiser. The Blazer competes on style and feature content, but its first few model years picked up reliability complaints around the 9-speed transmission, infotainment software, and a fuel pump recall. It's a reasonable choice for someone who prioritizes looks and driving feel, but buyers should go in with eyes open on those known trouble spots.
Reliability
2/5
Verified data
Specs shown for Blazer FWD — the most common configuration.
Other trims may vary in engine, drivetrain, or fuel economy. Sign in to see your vehicle's exact specs.
Engine
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Drivetrain
FWD
Fuel
Gasoline
MPG
21 city / 27 hwy / 23 combined
Seats
2
Doors
4
Body
Small Sport Utility Vehicle 2WD
Length
191.4 in
Overview
AI-curatedThe 2021 Chevrolet Blazer is a mid-size, car-based crossover SUV that GM revived under the storied Blazer nameplate after a long hiatus. Built in Mexico on GM's C1XX platform, it slots between the smaller Equinox and the three-row Traverse. It's styled aggressively for the segment and focuses on road manners and a sporty cabin feel over off-road capability. Two engines are offered: a 2.0L turbocharged four-cylinder producing 227 hp, and a 3.6L V6 making 308 hp. Both pair with a 9-speed automatic. FWD is standard; AWD is available on most trims. Neither powertrain is designed for serious towing or trail use — this is a suburban commuter and highway cruiser. The Blazer competes on style and feature content, but its first few model years picked up reliability complaints around the 9-speed transmission, infotainment software, and a fuel pump recall. It's a reasonable choice for someone who prioritizes looks and driving feel, but buyers should go in with eyes open on those known trouble spots.
Known for
- Aggressive, sport-influenced exterior styling for the segment
- Strong V6 power output (308 hp) for a mid-size crossover
- Comfortable, car-like ride quality
- Feature-rich cabin with available RS and Premier trims
Best for
- Daily commuters and highway drivers wanting something sportier than the average crossover
- Buyers who prioritize styling and interior tech over cargo utility
- Two-adult households who rarely need the third row
- Those who want AWD capability without going to a truck-based SUV
Watch for
- 9-speed automatic transmission hunting and harsh shifting — a documented complaint across early model years
- Fuel pump module recall (NHTSA 21V-650) — confirm it has been performed before purchase
- Rear toe link recall (NHTSA 21V-376) — affects handling safety, must be verified closed
- Infotainment software bugs causing freezes and reboots
- Cargo space is smaller than segment competitors despite similar exterior size
Common issues by mileage
6 knownFuel Pump Module Failure (Recall 21V-650)
high- Typically appears
- 0–60k mi
- Estimated repair
- $0 – $800
VVT Cam Phaser / Timing Over-Retarded (2.0L Turbo)
medium- Typically appears
- 40–100k mi
- Estimated repair
- $400 – $1,200
VVT Solenoid Circuit Faults (3.6L V6)
medium- Typically appears
- 50–120k mi
- Estimated repair
- $300 – $900
Infotainment System Freeze / Reboot Loops
high- Typically appears
- 0–40k mi
- Estimated repair
- $0 – $300
Rear Toe Link Failure (Recall 21V-376)
medium- Typically appears
- 0–50k mi
- Estimated repair
- $0 – $600
Maintenance schedule
- 1 Every 7,500 miles or 12 months, whichever comes first Engine Oil & Filter Change — GM dexos1 Gen 2 5W-30 Full Synthetic
The 2.0L turbo and 3.6L VVT systems are oil-quality-sensitive. Non-spec oil accelerates cam phaser and VVT solenoid wear. Don't stretch this interval in Wisconsin winters — cold starts are hard on turbo bearings.
- 2 Every 7,500 miles (with every oil change) Tire Rotation
FWD models wear front tires significantly faster, especially with the heavier front-engine layout. Consistent rotation extends tire life and maintains even braking.
- 3 Every 30,000 miles; replace if discolored or contaminated Transmission Fluid Inspection
GM rates the 9-speed fluid as 'lifetime' under ideal conditions, but real-world shift complaints often improve with a fresh DEXRON-VI fill at 60–80k miles. Worth inspecting early given this transmission's reputation.
- 4 Every 30,000 miles (inspect at 15,000) Engine Air Filter Replacement
Wisconsin road conditions — especially spring and fall with heavy particulate — can load the filter faster than the service interval suggests. A restricted filter hurts turbo response and fuel economy.
- 5 Every 15,000–20,000 miles Cabin Air Filter Replacement
Shorter interval than the manual suggests is wise in Wisconsin due to road salt dust, pollen season, and fall debris. A clogged cabin filter also strains the HVAC blower motor.
- 6 Every 3 years or 45,000 miles Brake Fluid Replacement (DOT 3)
DOT 3 is hygroscopic — it absorbs moisture over time, which lowers its boiling point and accelerates internal caliper corrosion. Wisconsin's wet winters make this especially relevant.
- 7 Every 2 years; first full change at 150,000 miles or 5 years DEX-COOL Coolant System Inspection
DEX-COOL is long-life but must be kept at the correct 50/50 dilution. In Wisconsin's sub-zero temps, verify the freeze protection level every fall. Low coolant or degraded mixture can cause cold-start overheating on the 2.0L turbo.
- 8 Every 97,500 miles (2.0L Turbo) / Every 60,000 miles (3.6L V6) Spark Plug Replacement
The V6 iridium plugs have a shorter service life than the turbo four. Worn plugs on the 3.6L contribute to rough idle and misfires, and the engine's packaging makes replacement more labor-intensive — don't let it go past the interval.
Always defer to the manufacturer's service manual for warranty-mandated intervals.
Cost of ownership
Annual maintenance
$600 – $1,200
Fuel
At 25 MPG combined and Wisconsin average gas prices (~$3.30/gal), expect roughly $1,700–$2,200/year at 15,000 miles annually. The V6 bumps that to $2,000–$2,600. Premium fuel is not required.
Insurance
Mid-size SUV, typically $1,400–$1,900/year in the Lake Geneva area for a driver with a clean record. AWD trims run slightly higher due to replacement part costs.
Routine annual maintenance on a well-kept 2021 Blazer runs $600–$1,200 at an independent shop — oil changes, filters, tire rotation, and a brake inspection. Budget an additional $300–$500 every third year for brake fluid and a transmission fluid check. The real wildcard is the 9-speed transmission: if it develops shift quality issues beyond software updates, a valve body repair or full replacement can run $1,500–$3,500. Keeping up with oil changes on spec is the single best way to avoid the most expensive repairs on this vehicle.
Seasonal care
Lake Geneva, WI Winter
- Switch to a dedicated winter tire set before temps drop below 40°F — the Blazer's standard all-season tires lose grip quickly on Wisconsin ice. FWD models especially benefit from four matched winter tires.
- Fill the washer fluid reservoir with a -20°F or colder rated fluid rated for Wisconsin winters. The 1.3-gallon tank depletes fast on salty roads — keep a spare jug in the cargo area.
- Test the battery before first hard freeze. Cold-crank amps drop sharply below 0°F; a battery showing even marginal health in fall will often fail by January in Lake Geneva.
- Check DEX-COOL freeze protection level with an antifreeze tester — confirm protection to at least -34°F.
- Use the remote start feature (if equipped) to warm the engine and cabin before driving, but do not let the turbo spool hard until oil temperature rises — let it idle 60–90 seconds minimum on sub-zero mornings.
- Inspect and treat door, hood, and liftgate rubber seals with a silicone-based protectant to prevent freezing shut.
Summer
- Check tire pressure after any significant temperature swing — every 10°F rise adds about 1 PSI. The Blazer's recommended pressure is on the door jamb placard, not the sidewall.
- Test A/C performance early in the season — the 2.0L turbo generates significant underhood heat; a marginally charged A/C system will struggle on hot Wisconsin afternoons.
- Inspect the engine air filter after spring — road salt residue and spring pollen can load it faster than the mileage interval alone suggests.
- Check coolant level cold — heat soak on the turbocharged 2.0L can be hard on the cooling system if the mixture is marginal or the level is low.
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