2006 chevy eqinoix blower motor quit working on one setting, would work on high, then quit altogether. Then it started woking again on all settings??

Most common issue is the blower motor itself. Unplug it and test for 12v w/ key on and fan set to hi. If you have 12volts you need a new motor. If not check the fuse. If the fuse is good check for power at the resistor. Both the motor and resistor are below the glove box. Access them from underneath.

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ok i what you trying it

More than likely you need to have your blower motor checked and possibly replaced.

resistor

The switch, high blower speed relay or the wire harness at the blower motor has gone bad. The highest setting 5 has no resistor, so the blower runs on high but the high current flow ends up burning up the switch's contact on that setting or the relay and may be the resistor wire harness at the blower motor has gone bad. Common would be the switch it self, if the switch is good. Then it's going to be the blower relay or wire leads at the speed resistor by the blower motor under the glove box by the passenger leg compartment. Keep me posted, be glad to help you get your Silverado running 100% again soon.

Sounds like you may have a bad blower motor resistor.  When they go bad, they usually wipe out all speeds except high.  But could knock out just one or two of the speeds.  It should be located near the blower motor.

could be the resister tht controls the 4 speeds. It's in te plenum case to keep it cool. Or blower motor is failing

it seems like u have either a bad switch or bad blower motor.

the blower motor more than likely has burned out....that is assuming its the blower your talking about. They get pretty hot if run on high constantly. Bout all you can do is replace it....what about the warranty?

Bad blower motor resistor.Remove plug & look to see if the plug is burnt/melted on any contacts.Also check the pigtail that plugs into blower motor.I only had to replace my resistor.