Did you check to see if the A/C drain hose is clogged. You can sometimes use a hanger and clear the hose.
When you find it faulty and need to be replaced
at the front of the car the sides left and right and at the back middle
Could be the socket or wiring is faulty. Year, make and model would help us.
Temperature insufficient for closed loop operation. Don't assume the thermostat is faulty. The code is set due to a faulty O2 sensor heater. There are three O2s. The code is set by one of the front sensors located in the front or rear exhaust manifold. The sensor after the Cat is not the problem.
You probably have a faulty temp blend door actuator in the front. It is located directly behind the radio on the front of the AC/heater case.
You probably have a faulty temp blend door motor assembly on the front unit. It is located directly behind the radio, way back in on the front of the heater case. Could also be the door inside behind that assembly is broken. The door lifts to allow hot air and drops to close to send cold air. I am in the process of fixing mine and it aint pretty, but cheaper to get the assembly than to replace the door which requires the whole assembly to be replaced. Lots of luck with it.
I just replaced the front heater motor in my 99 Suburban, it worked great, now the heater/ac absolutely does nothing. Could the switch be bad, the motor, I am stumped and need help. Thanks Jim.
replace front heater corefront and rear have independent heater cores
needs a new heater core
The a/c heater blower motor for the front unit is located at the rear right side in the engine compartment behind the air duster......... The a/c heater blower motor for the rear unit (if equipped) is located in the rear a/c housing below the armrest..........
It is probably a faulty temp blend door actuator located behind the radio on the front of the heater case. It could be a stopped up heater core, but it is really hard to replace. The whole dash has to come out to replace it. Have him feel both heater hoses when the vehicle's engine is hot and running. If they both feel hot, you dont need a heater core. If they are cold, then you may have a stopped up core, or you could have limited circulation, possibly caused by a faulty waterpump. But I suspect that you have a faulty blend door actuator as I said in the beginning
Faulty socket wiring problem Faulty flasher faulty switch