Chevrolet Tahoe and Suburban Warning Lights: What They Mean

Amber: check soon

Four-Wheel-Drive Light

Normally shows the selected drive mode and flashes during a shift. Amber means a possible four-wheel-drive malfunction.
What to do: See your dealer. PDF page 117

Other warnings and indicators

Airbag Readiness Light

Electrical problem in the airbag system; airbags might not inflate in a crash or could inflate without one.
What to do: Have the vehicle serviced right away. It should come on briefly at startup; if it doesn't, have it fixed immediately. PDF page 113

Antilock Brake System (ABS) Warning Light

ABS has detected a problem. Brakes still work, but ABS is not functioning as expected. With the brake warning light, regular brakes are affected too.
What to do: See your dealer for service. PDF page 117

Tire Pressure Warning Light

Low tire pressure detected. If it flashes about a minute then stays on, the tire pressure monitor system is malfunctioning.
What to do: Stop as soon as possible and inflate tires to the pressure on the Tire and Loading Information label. PDF page 346

Passenger Airbag Status Indicator

ON means the front passenger frontal airbag is allowed to inflate; OFF means the passenger sensing system has turned it off.
What to do: If both or neither are lit, or the airbag readiness light is on, there may be a problem; otherwise adjust seating as described. PDF page 113

Hill Descent Control Light

Lit when Hill Descent Control is ready for use; flashing means the system is active. PDF page 117

Summarized in our own words from the 2026 Chevrolet Tahoe and Suburban 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.