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Posted on Jan 02, 2017
Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.
Posted on Jan 18, 2009
That "thing" is part of the compressor clutch. When it’s spinning the clutch is engaged, when it stops the compressor is off. If it’s constantly cycling, you probably don’t have enough freon in the system. But remember, however the gas escaped before, it will escape again, unless you fix the leak.
Posted on Jul 15, 2009
I recently had the same problem with my 04 Silverado 2500HD after I replaced the battery. I am guessing that you have dual climate contol. You need to reset the climate control. I reset mine by simply shutting the AC off when truck is running and parked. Then turn off the truck
and pull the AC and HVAC fuses out of the fuse box. Leave them out a few seconds and put them back in. Start the vehicle and leave the AC off for about a minute, then turn it on. This should fix the problem. If not, try it again. If still not, you might have to do the same thing except unhook the battery at the same time you pull the fuses. Good luck.
It worked for me.
Posted on Aug 06, 2009
SOURCE: Front Blower
ok, missed the part about the rear ac working, the part that causes this is called the air temperature control blend door actuator motor, it is an electric motor driven gear drive that moves the plastic door inside the air ducking to mix or shut off the hot or cold air from the ac evaporator core or the heater core, you will need to replace it.
Posted on Sep 03, 2009
Testimonial: "Great thanks that could be my problem. Is the motor by the inside coil"
SOURCE: 2005 tahoe no air blowing
as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash..
Posted on Oct 13, 2009
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