My 2003 Chevy Tahoe 5.3
Dear BL: when i turn on the a/c it makes a clicking noise
and it only gets cold if you are driving and rear ac does not get cold
at all as long as you are driving it is cold in front but if you stop at
a light it does not stay cold and you can still hear the clicking sound
thank-you
Dear BL: when i turn on the a/c it makes a clicking noise
and it only gets cold if you are driving and rear ac does not get cold
at all as long as you are driving it is cold in front but if you stop at
a light it does not stay cold and you can still hear the clicking sound
thank-you
Other related articles:
Why does my Tahoe make a clicking noise with a/c on
Todays ac systems can be very complicated. Some systems use several
controllers, sensors, switches, relays and modules. Especially automatic, dual
zone, and front/rear systems.
To start with the basics, low freon charge is usually the reason for insufficient
cooling. Normally low freon charge will give poor cooling under all driving
conditions.
You mentioned a clicking noise. If it is repetitive and coming from the dash
area, a common problem is one of the blend/mode door actuator motors.
Sometimes when they fail, they randomly search for a position.
There are also a few bulletins for ac problems.......
1- The low pressure cycling switch in the receiver/dryer may malfunction.
Sometimes a lite tap can help diag.
2- Adding an auxiliary fan in front of condenser
3- May also be a control head reprogram update.
Would recommend having a dealer technician look at it. There may be trouble
codes stored, and a technician will most likely have to look at several different
data parameters to diag. properly.
controllers, sensors, switches, relays and modules. Especially automatic, dual
zone, and front/rear systems.
To start with the basics, low freon charge is usually the reason for insufficient
cooling. Normally low freon charge will give poor cooling under all driving
conditions.
You mentioned a clicking noise. If it is repetitive and coming from the dash
area, a common problem is one of the blend/mode door actuator motors.
Sometimes when they fail, they randomly search for a position.
There are also a few bulletins for ac problems.......
1- The low pressure cycling switch in the receiver/dryer may malfunction.
Sometimes a lite tap can help diag.
2- Adding an auxiliary fan in front of condenser
3- May also be a control head reprogram update.
Would recommend having a dealer technician look at it. There may be trouble
codes stored, and a technician will most likely have to look at several different
data parameters to diag. properly.