Question about 1993 GMC Sierra
No leaking, new thermostat, hoses seem full of hot water, just does not get warm inside truck??help"
You may have a clogged heater core or heater core bypass valve may be stuck closed. bypass valve is usually on the firewall on one of the heater core hoses. if valve seems to be operating properly. you will need to let the vehicle cool down. disconnect both heater hoses. connect garden hose to one side of heater core let water run through one side and then the other side. if the heater core is too clogged it may need to be replaced.
Posted on Jan 17, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
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
Odds are your heater core isn't working or plugged. Check your passenger floorboard for water, and replace the heater core. If that doesn't fix it, get a coolant system flush.
Posted on Feb 12, 2009
airjoc does not have a clue to your problem, I take you want to have warmer air not cooler ac. check the control system, if you have a vacum system tou may have a leak, if it is controlled by voltage, check the control panel and the control box. Also open the hood, place the heater on high but not on any defrost setting preferrably on just the floor setting. Start the engine and see if the ac compressor is running. If it is, the control panel is bad.
Posted on Oct 09, 2009
Tips for a great answer:
May 14, 2017 | Lincoln Cars & Trucks
Jun 01, 2017 | Cars & Trucks
Dec 12, 2012 | 2004 Jeep Grand Cherokee
Jan 25, 2012 | Cars & Trucks
Feb 09, 2011 | 1997 Honda Civic
Dec 13, 2009 | 2000 Mercury Sable
Dec 07, 2009 | 1998 Chevrolet Astro
Nov 12, 2009 | 2002 Chevrolet S-10
Mar 07, 2009 | 1996 Ford Taurus
Jan 18, 2009 | 2004 Honda Civic
348 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: