2003 Chevy Impala wont blow air,replaced blower motor and still nothing. wont blow hot,cold or even just the fan

Sounds like you have a shorted power wire to ground in your heater circuit.

providing your coolant is full cause low coolant will cause no heat
and your temp gauge is normal in the middle then most likely u have a bad blend door actuator usually on the passenger side

you have a bad connection at the blower motor - something

If you need further help, reach me via phone at https://www.6ya.com/expert/james_9c1b039055413ffa

start with using a meter to test for power start from fan back to switches need to check harness and connectors

You have a bad resistor. This controls your speed of the blower motor. It is located near your blower motor on passenger side behind glove box. You might be able to access it from underneath the glove box by removing the lower panel. This is what it looks like, but you will only see the black part going into the ducts near your fan

To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

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Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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No heat on car? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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Heater blows intermittently and temp gauge goes erratic? http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html------------Heater blows cold? http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
---------Car heater blowing warm, but not hot air? http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html-------- Heater/AC blower motor not working?

http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html

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A/C, heater, defroster fan, not working? http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html Heater problem? http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html---------

This will help.Thanks.

Try giving the blower motor a rap with a hammer handle or long screwdriver while it is on. Sometimes it will get it started. That is a sign that the motor brushes are bad and the motor will need to be replaced. The smack jars the contacts just enough to get it in motion and it will continue to run until you shut off the car.

2003 Chevy Impala w/dual zone heat/AC. The fan stopped working in speed 1 adn 2. Do I need to replace the switch?

why would the heat on a 2000 Chevy Trailblazer only produce heat when the temp dail is to the right to the red indicator, but produces cold air when the temp indicator is any where else on the dial. Thank
Charles McLane
[email protected]

If it will not switch to any different positions,and you did not have this problem prior to repair.Check for a leaking vacuum line to the control unit.The line should run through the firewall to the control unit.Good Luck!!!