A flickering check engine light with a rough idle in a Chevy Tahoe usually points to a vacuum leak, dirty sensor, or worn ignition part. Here’s how to think through it before you panic.
Hey there — I know that little amber glow dancing around on your dash is enough to make anyone's stomach drop. When it's flickering at idle and the engine feels like it's doing a mild cha-cha, it's easy to assume the worst. But on the fifth-gen Tahoe, this combination is often less about catastrophic failure and more about something small that's messing with the air-fuel mixture.
