Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner

steady light

  1. 4x4 Drivetrain
    I have an '04 Blazer with the Vortec 4.3 I6. ~73K miles. Service: Oil changes only. I've used Auto 4WD several times over the past few months. Every so often, the 4WD light on the dash blinks once for just a split second, then goes away for weeks. Just recently, with 4 inches of snow on...