Sounds like you have had a lot of fun with this rig
#1 - replace the stereo - that's cheaper than sending yours out for repair.
#2 - Make sure your cooling system is full. You can get an air lock/bubble in the heater core that is really difficult to resolve sometimes. When the cooling system starts to get low on coolant - the heater core is the first to get starved. Physically feel the temperature of the heater hoses at the firewall - they should both be hot - if one is hot and the other not - there is a restriction in the heater core. If neither are hot - your coolant level is probably low. With the engine running you can pinch the upper radiator hose which should force flow through the heater core. Try those things - if you get sufficient heat from other modes - i.e. DEF VENT then your coolant level is not an issue. your controls are your problem - and is this a Auto Temp control system (digital) or manual?
#3 sounds like the ground circuit for Pass side Brake light is not sufficient. Works OK until the park light is turned on. I presume a bulb from the drivers side that worked ok doesn't on the pass side (known good bulb) - the ground circuit needs repair.
#4 the illumination issue - Dash lights/buttons/switches - all those should illuminate together (dimmer controlled)
Radio buttons - refer to #1
Console symbols - wiring connections for the bulbs
Dome lights working ok from rear doors and not the front - probably issues with the front door switches
that's a lot of different things for one car
SOURCE: Heater blows cold, and fan switch only works on 4 and 5
working on 4 and 5 speed that the resistor that broken cold air you got to move the selector to see the motor that move the trap hot and cold sometime when the motor was not move to the hot side for a long time its jam the motor on the passager side under dash put to hot and gently tap the motor tanks pierre
SOURCE: Brake lights/turn signals work sporatically.
heyii lady i am not so sure in this case but if it is not a short then may be your induction coil is producing more crrent than required.. so get your coil checked.. or this time..if u have not been then put genuine compant lamps.. i hope this will help you out.. belated Merry X-mas and Happy New Year :)
SOURCE: 2004 Tahoe Heating Problems
Did you open the radiator cap and make sure the radiator is full of coolant? Sometimes the hose from the coolant reservoir to the radiator becomes plugged, and the radiator will become low on coolant even when the plastic reservoir is full. Low water levels will prevent the coolant system from getting hot water from the engine to the radiator or heater cores. This will cause the engine to run hotter while the heater appears to not be working.
SOURCE: 2005 Yukon Denalli - Blow cold air out the drivers side
the passenger side electronic controller is sensing the passenger side temperature is cooler than it really is, which causes the controller to increase the hot water flow to warm up the passenger area...any time you replace a battery or loose your charge, the HVAC module will need to be reset...Try this...
Remove your hvac fuse for 10 sec - reinstall fuse.
Start engine "DO NOT TOUCH ANYTHING FOR 3 MINUTES"
Recalibration of module will accure when power is lost (fuse pulled, battery changed or died)
If hvac reset did not work you have a trouble code - reset BCM
There are two ways to reset your body control module
Go to the GENERAL
Remove BOTH battery cables (for the sake of CAUTION remove air bag fuse and wait 5 MINUTES)
Hold both cables together for 1 minute - drains KAM (keep alive memory).
Put everything back together
Start the engine "DO NOT TOUCH ANYTHING FOR 3 MINUTES"
If you have no broken parts - system not default (normal operation)
If that works it just saved you 600 dollars...dealer costs to repair.
Good Luck...please rate me a fixya.
SOURCE: 01 durango: passenger side rear brake light does not come
try changing or checking the fuse for it.
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