Heater Problem and Horn Problem
chahn48926 Member Posts: 4
edited July 2014 in Chevrolet
I have a '99 GMC Suburban with two problems. Problem #1 is no heat from the front heater. Plenty of heat from the rear heater though. I have replaced the control head and the vacuum actutor that controls the valve that supplies hot water to the heater core. The valve moves, and appears to be functioning. Problem #2 it a non-functioning horn. It is not the horn relay or the horns themselves. The problem appears to be in the switch mechanism under the driver's side air bag. How can I remove it to check it?
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Thanks in advance for any tips/help!
When the mechanic removed the engine, air got to the coolant in the heater hoses and turned the "stop-leak" to an oatmeal consistency. Now the heater core is clogged and no heat is the result.
My question is, can the heater hoses be taken loose and a pressure sprayer be used to blow the sludge out or will the core need to be replaced(It worked fine before the transplant)?
Any help would be appreciated greatly, It's cold.
- the horn switchs
- a Horn PCB relay
- a 15A Horn fuse
Check the fuse first, and then the relay, and if you have to get to the switches you have to get into your steering whell behind the airbag.