Question about 2003 Chevrolet TrailBlazer

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Aux air prblems

My 2003 trailerblazer's rear used to intermittently go on and off on it's own. Now it doesnt work at all overhead. rear air controls still work for foot level air

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Have the sysem replace

Posted on Jul 29, 2009

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My front air works fine,rear air does not even come on using either driver or passenger control knobs.Think control switch(switches) are inop?


If you had a volt meter, you could test inputs at switches, but start with the one on the dash first not the overhead. Always check fuses first for correct voltage on bothe sides of the fuse. It is not likely ther is a rear blower fuse. You can actually test the switch too with the resistance test of the meter. As you cycle the switch through positions you can see if the paths are getting transferred then if they are you move to rear blower and check for voltage at blower. The main rear blower switch will only function in the rear selection mode on the dash switch so the rear switch is out of the equation., good luck

Feb 24, 2016 | Cars & Trucks

1 Answer

Cruise control doesnt work the light doesnt even come on


Fuses are a great place to start, if not fuses the actual cruise control switch may be to fault. Rear heater do you get heat out the front and if so is there a fuse for a rear fan maybe a blower.. Let me know

Mar 28, 2014 | 2003 Dodge Durango

1 Answer

2003 Chevy Trailerblazer getting low gas mileage


Try changing the fuel and air filter as well as spark plugs and wires

Jan 02, 2013 | 2003 Chevrolet Chevrolet TrailBlazer

1 Answer

P1506 mfr ctrl veh spd idle ctrl aux inp


most likely the idle air control valve is dirty.try cleaning it,if that doesnt fix it test the throttle position sensor.TPS usually causes higher than normal idle speed or intermittent misfires depending on throttle angle while driving.send me a msg for test procedure if needed

Dec 17, 2011 | 2002 Mercury Sable

1 Answer

There are 2 lighter plugs on my yukon. the one on the drivers side stopped working. The other, on the passenger side still works. Pulled every fuse in interior fuse box by drivers side door. None look...


{: ) There are two fuses that protect the front IP power outlet or lighter plugs. At the underhood fuse block, labeled CIG LTR 15amps and AUX PWR 20amps. See red arrows on diagram below.
The fuse on the driver side door fuse block labeled AUX PWR2 20amps protects the rear lighter plugs.

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Aug 28, 2011 | 2003 GMC Yukon XL

1 Answer

The fan stopped working for the rear AC/heat in our 2003 odyssey. Checked 40amp suqare fuse under hood and it tested ok. Is there a fuse or breaker for the rear fan motor?


The large fuse you checked is for the rear fan blower motor. The fuse you need to check is for the fan motor relays and rear mode control motor. It is fuse No. 3 (7.5A) located in the driver's under dash kick panel fuse box.

If fuse No. 3 is blown and you replace the fuse and it blows immediately, you'll have to check the five relays and the mode control motor all located near the rear A/C unit in the right aft sidewall. Most likely, the mode control doors have become jammed and that is why the fuse blows. The doors shift air from overhead vents (cool) to floor vents (heat).

If the fuse is fine, the trouble is probably with the blower motor itself or the wiring to the blower motor is broken, or there is a bad ground.

Feb 28, 2011 | 2003 Honda Odyssey

3 Answers

IM IN NEED OF A FUSE BOX DIAGRAM FOR A 1999 LINCOLN NAVIGATOR


go to the ford lincoln mercury website and enter you year, make, model of your vehicle. It will let you download a pdf version to your computer. then open the document and go to page 135. this is free don't pay for something you shouldn't, you already got the vehicle. this is just information. Fuse Location,Fuse Amp,Description
1) 25A Audio
2) 5A Clock, Overhead Trip Computer, Electronic
Automatic Temperature Control (EATC),
Powertrain Control Module (PCM), Cluster
3) 20A Cigar Lighter, OBD-II Scan Tool Connector
4) 15A Autolamp Module, Remote Entry Module,
Mirrors, Memory Module, Adjustable
Pedals, Air Suspension Switch
5) 15A AC Clutch Relay, Speed Control Module,
Reverse Lamp, EVO Module, Climate Mode
6 5A Cluster, Overhead Trip Computer, Compass,
Steering Sensor, Brake Shift Interlock
Solenoid, Air Suspension Module, GEM
Module
7 5A Aux A/C Blower Relay, Console Blower
8 5A Radio, Remote Entry Module, Cell Phone,
Clock, GEM Module
9 — Not Used
10 — Not Used
11 30A Front Washer Pump Relay, Wiper Run/Park
Relay, Wiper Hi/LO Relay, Windshield Wiper
Motor, Rear Washer Pump Relay
12 — Not Used
13 20A Stop Lamp Switch (Lamps), Turn/Hazard
Flasher, Speed Control Module
14 15A Rear Wipers, Running Board Lamps,
Battery Saver Relay, Interior Lamp Relay,
Accessory Delay Relay (Power Windows,
Flip Windows, Audio)
15 5A Stop Lamp Switch, (Speed Control, Brake
Shift Interlock, ABS, PCM Module Inputs),
GEM Module
16 20A Headlamps (Hi Beams), Cluster (Hi Beam
Indicator)
17 10A Heated Mirrors/Rear Window Defroster
Indicator
18 5A Instrument Illumination (Dimmer Switch
Power), Clock (Dimmer)
19 — Not Used
20 5A Audio, Four Wheel Air Suspension (4WAS)
Module, Memory Module, GEM Module,
Digital Transmission Range Selector
21 15A Starter Relay, Fuse 20
22 10A Air Bag Module
23 10A Electrochromic Mirror, Aux A/C, Heated
Seats, Trailer Tow Battery Charge,
Turn/Hazard Flasher, Console Blower Door
Actuator
24 10A Climate Mode Switch (Blower Relay),
EATC (via fuse 7), EATC Blower Relay
25 5A 4 Wheel Anti-Lock Brake System (4WABS)
Module
26 10A Right Side Low Beam Headlamp
27 5A Foglamp Relay and Foglamp Indicator
28 10A Left Side Low Beam Headlamp
29 5A Autolamp Module, Transmission Overdrive
Control Switch
30 30A Passive Anti Theft Transceiver, Cluster,
Ignition Coils, Powertrain Control Module
Relay
31 10A Rear Integrated Control Panel (Audio), CD
Player, Cell Phone
Relay 1 — Interior Lamp Relay
Relay 2 — Battery Saver Relay
Relay 3 — Rear Window Defroster Relay
Relay 4 — One Touch Down Window Relay
Relay 5 — ACC Delay Relay

hope this helps.

Jun 16, 2010 | 1999 Lincoln Navigator

1 Answer

2007 Chevy Uplander Rear Overhead A/C Vents Won't Work


Have you checked the Aux switch near the bottom of the center control console.
There should be a knob with: Aux, Off, 1, 2, 3. This is the switch for the rear AC blower.
If the driver wants to control the rear AC, use the 1, 2, 3 settings.
If you put it on Aux, Than the rear AC is controlled by the passenger in the back seat using the extra controls located on the Overhead DVD player. (The front AC must be on the rear to work)

Jul 09, 2009 | 2006 Chevrolet Uplander

2 Answers

Front a/c works fine~~blower in very back works~~NOTHING will come from overhead outlets


it maybe a door are something thats not opening i do not know but try these websites fix & troubleshoot heating & A/C www.automedia.com and the other one is car A/C repair www.directgardening.com and if all fails stop by your local library and get your hands on a haynes auto repair manual for your truck.

May 31, 2009 | 2003 Ford Expedition

2 Answers

The rear heater does not generate heat - only cold air in vents


does front air work properly? for heat i mean?.. the blend doors are suspect as well as the heater hoses to the rear core and its heater valve.. possibily the control head is to blame or?, but i cant tell from here

Jan 14, 2009 | 2003 GMC Yukon Denali

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