Chevrolet Avalanche Warning Lights: What They Mean

Red: stop or act now

Brake System Warning Light

Comes on when the parking brake is set, or with a chime if there may be a brake problem or low brake fluid.
What to do: Pull off the road and stop carefully. Have the brakes inspected right away; if the light stays on, have the vehicle towed. PDF page 146

Other warnings and indicators

Airbag Readiness Light

If it stays on after starting or comes on while driving, the airbag system may not work properly and airbags might not inflate in a crash.
What to do: Have the vehicle serviced right away. PDF page 142

Charging System Light

If it stays on or comes on while driving, there may be a charging system problem, such as a generator drive belt or electrical fault.
What to do: Have it checked right away. If you must drive a short distance, turn off accessories such as the radio and air conditioner. PDF page 143

Antilock Brake System (ABS) Warning Light

If it stays on or comes on while driving, the antilock brakes are not working. Regular brakes still work unless the brake warning light is also on.
What to do: Stop safely, turn the ignition off, restart to reset. If the light stays on or returns, the vehicle needs service. PDF page 147

Low Tire Pressure Warning Light

One or more tires are low on pressure. If it flashes about a minute then stays on, the TPMS has a malfunction.
What to do: Stop as soon as possible and inflate tires to the pressure on the Tire and Loading Information label. PDF page 388

Malfunction Indicator Lamp

Part of the OBD II system that monitors emissions. It comes on at ignition as a check that it works.
What to do: If it does not come on at ignition, have the vehicle serviced by your dealer. PDF page 143

StabiliTrak OFF Light

Comes on when the StabiliTrak system has been turned off using the TCS/StabiliTrak button. PDF page 147

Tow/Haul Mode Light

Comes on when Tow/Haul Mode has been activated. PDF page 147

Summarized in our own words from the 2013 Chevrolet Avalanche owner's manual (AI-assisted; every light name was matched against its cited page 2026-10-18). Your vehicle may not have every light, and other years can differ. A red warning that stays on usually means stop safely and check: your manual has the final word.