2019–2024 Chevrolet Blazer · common problems & known faults

9-speed automatic harsh or delayed shifts.

Typically appears

Any

What to inspect

Test-drive through the gears for smoothness.

Infotainment reboots and Stop/Start faults.

Typically appears

Any

What to inspect

Test the touchscreen and auto stop/start behaviour.

Electronic parking brake and ABS sensor faults.

Typically appears

Any

What to inspect

Check for warning lights and test the parking brake.

AC compressor and blower issues on some cars.

Typically appears

60,000+ miles

What to inspect

Confirm the AC blows cold and the fan works on all speeds.

Timing chain stretch causing metallic rattle and rough idle.

Typically appears

70,000-100,000 miles

What to inspect

Perform a cold start with the bonnet open. Listen closely to the front timing cover for a distinct metallic rattle lasting 2-3 seconds before oil pressure builds.

EVAP purge valve failure leading to rough idle and EML illumination.

Typically appears

40,000-60,000 miles

What to inspect

Start the engine and let it idle. Listen for an excessively loud, rapid ticking noise from the top of the engine bay near the inlet manifold.

Front anti-roll bar drop link wear causing knocking noises.

Typically appears

50,000-80,000 miles

What to inspect

Push down firmly on the front wings to bounce the suspension, listening for a clunk, or perform a low-speed figure-of-eight lock-to-lock test on the forecourt.

Panoramic sunroof drain blockage causing water ingress.

Typically appears

3-5 years

What to inspect

Press your hand firmly into the front carpet under the overmats, particularly near the A-pillars, checking for dampness or a strong mildew odour.