HINT 1:check fuses first???????
NO ENGINE STATED AND WORK DIFFERENT.
the free FSM book is here
read that? HVAC and cooling chapters.
heater does not blow hot air AT VENTS.
does that mean blower dead?
is hot AIR knob at hot zone.?
is fan on high, :"?
can you hear a normal sounding fan on high???????
does it fail in recirc mode and vent??
Does hot are work with car moving fast?
is engine at 180f or more>using tools to measure rad temp?
OR LEARN TO USE SCAN TOOLS
SEE ECT AT 180F+ AND KNOW AT FULL TEMP.
yes,/no, if engine is hot, and AF LEVELS ARE FULL
did you scan the pcm for hvac errors (DTC)
Then this is a HVAC failure.
some GC have a hvac calibrate mode, read the Fsm ON THIS.
some have the climate control option, do you,????? very important fact to know.
EVER FLUSH THE COOLANT SYSTEM IN 12 YEARS.
WJ JEEP (got AZC?)
HEATING CHAPTER, READ THAT?
IF THE BCM CAN NOT TALK TO THE AZC
guess what. things fail
no scan it twice. and win..
only with AZC OPTION
SEE ALL THOSE lines bottom
lots of damper motors on each
COMPLEX. diagnosis. if present.
SEE PIN 4 BLEND
the Mtc WORKS TOTALLY DIFFR
The TVA below runs the blend door. motor. unlike aBOVE.
LOTS more IN THE BOOK.