heater and defrost problem 1988 silverado

mingas · #1 12-23-2003, 11:01 AM

My 1988 silverado has a problem getting the air to blow out of the floor vents and the windshiled vents. The control on the dash shows it to be on heater or defrost but the hot air comes out of the AC vents only. Please help.

LastOne · #2 12-23-2003, 01:16 PM

Check the door on the duct behind / underneath the glove box. I think on your model it is vacuum operated. It should transfer the air door to make the air blow out the bottom. Also check the cable or hose from the control to the door.

mingas · #3 12-29-2003, 02:47 PM

Thanks I'll give it a try.

Thread Thread Starter Forum Replies Last Post

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
AC and defroster problems	rbsteve	Grand Prix	3	06-02-2007 01:14 PM
2003 century heater and airconditioning problems	Ea$TBaYMonEyGeTTa	Century	1	12-12-2006 03:59 AM
Heater and Defroster	detourguy	Thunderbird	2	03-02-2005 11:49 PM
1993 upper middle vents and defroster problem	WRG	Camry/Camry Hybrid/Vista	4	02-05-2005 02:20 PM
heater and defrost on 1988 silverado	mingas	Engineering/ Technical	5	02-12-2004 07:50 PM

POST REPLY TO THIS THREAD