If you have no heat in your 02 grand Cherokee limited blower works heater lines are hot good circulation just no heat comes out?Maybe blocked heater core. Also check thermostat.
Your problem is with the blend doors in the GC. Check the HeaterTreater eBay listings for diagnostic information and a fix.
There is a fuse that protects the HVAC (Heating, Ventilation, Air Conditioning) blower motor circuit.
blower motor bad or no power to it chech fuses blower switch blower motor
Blower resistor is under the glove box. It is diamond shaped with 2 screws holding it in.
Probably the blower motor resistor, check blower motor at the same time
There are several things that can cause heater problems in your 1998 Jeep Grain Cherokee. The most common cause of heater problems is low fluid in your cooling system.
Under the hood, on the passenger side firewall, close to the passenger side fender.
sometimes this is caused by the blower resistor heating up and shutting the circuit down, or it could be in the blower itself heating up and shutting down.
Remove the wiring harness from the back of your 2005 Chevy Cavalier heater blower motor. Remove the heater blower motor retaining bolts. Remove the heater blower fan.
Heater blower resistor is what controls the low medium high speeds...
The blower may simply have burned out. If the blower is out then the heater probably still works.
This happened on my wife's 2005 Jeep Grand Cherokee. She took it in to Chrysler for diagnostics and they found the blower motor resistor was bad and replaced it. part no# 5143127-AA Resistor Blower - 803502 $11.12 Electrical System Tech labor $149.21 It worked.
Remove the wiring harness to the heater blower fan. Remove the retaining bolts. Remove the fan from the blower. Reverse the process to install the new heater blower fan.