Easy question

[only 205 hp]

my 2002 suburban AC and heat dont work for the first 3 settings. theres a total of 5 settings. between off and the 3rd setting, the air and heat dont even make a sound. any ideas?

[94century]

Sounds like a bad switch.

[MT-2500]

Originally Posted by only 205 hp

my 2002 suburban AC and heat dont work for the first 3 settings. theres a total of 5 settings. between off and the 3rd setting, the air and heat dont even make a sound. any ideas?

If manual heater control.
It is usually the blower motor reistor.
If automatic control may be the module.
MT