Question about 1993 GMC Sierra K1500
Cannot get air to defroster ?Hear bower running but will not deflect to windshield ?
Can you hear your blend door at all. Does it change into other settings. Like to floor and vents. It could be your blend door actuator.
Posted on Jan 19, 2015
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Posted on Jan 02, 2017
SOURCE: 93 gmc sierra heater not working
THERMOSTAT REPLACE IF NOT SEE IF HOSES ARE CLOGGED SHOT OF AIR COULD HELP OR DISSCONNECT BATTERY CABLE 10-15 MIN CONNECT BACK TRY HEATER
Posted on Jan 04, 2009
the resister block needs changing... oddly enough i'm unsure of what fan you are saying is not working.... if it's the front.. the resister block is located on the duct work under the dash for the air... near the fan... you will see a connector going into the side of the duct work. two screws and the block comes out... should be fairly obvious for the rear one but it will be near the fan.
Posted on Apr 16, 2009
either a vacumn pipe is broken or the ends split so its not passing a vacumn to open the flaps,where they are and how to get to them i cant help because i have never worked on one as they are not here in spain.check the engine end first though .Look for some small rubber pipes running from the inlet manifold
Posted on May 30, 2009
Oxygen sensor[s],map sensor and fuel pressure regulator.Although you should have a check engine light "on" with any sensor malfunction.I would look at fuel lines for a leak under vehicle.
Posted on Apr 17, 2010
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