I have a 2003 Pontiac aztek. When I turn on my bright lights, my running lights turn off. Do you know why this is?

SOURCE: Pontiac Aztek running hot

You may want to do a inspection of your cooling system, here's a list that might help,

• Check the thermostat, if it's defective replace it.
• Check the coolant in the reservoir tank, it should be at the proper full level.
• Sometimes when you change a thermostat there's a possibility you could get air in your coolant lines from having the coolant system opened up, this could keep your coolant from circulating through your system, if so you will need to bleed the air out of the coolant system.
• The water pump should be inspected for leaking coolant out of the weep hole's, when a water pump go'es bad it may leak coolant, which would mean the seals on the pump are bad, also listen for squealing noise's coming from the pump when the car is started, if it squeals the bearings are bad, there is also a possibility the water pump fins are wore down from corrosion, there is no way to inspect this without removing the pump.
• check the drive-belt for wear and tension, a bad tensioner or a bad drive-belt could have an effect on the operation of the water pump.
• check the pressure cap on the coolant reservoir tank for good pressure, when you remove the cap you should hear a hissing sound this means you have good pressure in your cooling system, check for corrosion or build up on the cap, clean the cap if necessary, also check the coolant in the reservoir tank, it should be clean, if not you might need to have the cooling system flushed, during the flush you can observe if the coolant has a good flow through the system.
• check the large upper and lower radiator hose's for crack's, swelling, and proper coolant flow.
• Check the operation of the cooling Fan, and circuit, cooling fans use relays and fuses, some vehicles use more than one cooling fan, if your vehicle has two cooling fans there should be two relays and two fuses one for each fan, first visually inspect the fuses if one or both are bad replace them, you can test the relay or relays for continuity by removing them and doing a proper continuity test according to your relays circuit diagram.
• Check the coolant temperature sensor, most coolant temperature sensors are located directly in the thermostat housing, this sends information to your pcm which determines when to turn your cooling fan on and off, if it's defective replace it.
• Inspect the radiator grill for damage or debris build up.
  

SOURCE: 2002 Pontiac Aztek - AWD disable light and Anti Lock Light

AWD disabled from a sensor unit in rear differential that senses high temp. This thing is over $300. Whine is from fluid. Need to change fluid. This versatrack fluid is about $40 per bottle and you need 3 bottles. Thumping noise is from loose rear knuckle bushings. These are part of the entire rear knuckle assy. and you must replace complete knuckle.

SOURCE: 2004 Pontiac Aztek Odometer light

Cluster is pretty much non serviceable. It's a circuit board problem that will have to be fixed by a cluster repair shop.

SOURCE: pontiac aztek awd disabled

Mine does this same thing...After taking it to the dealer and paying lots of money I found the solution my self while changing the Driver Side tire. Look behind the tire there should be a little plug for the abs if it comes un plugged in any way or loose then it will disable the AWD. Worked for me hope this works..

SOURCE: how do i reset service light on 2001 pontiac aztek?

Before you re-set it, take the car to AutoZone or other similar store to read the code. That way, you know why the service light came on.
Then AutoZone can re-set it for you (all free)!

== or ==

Disconnect the negative cable from the battery for 10 minutes, or more.
When you re-connect the battery cable, the service light will have benn reset. But it will turn back on eventually.

Hope this helps!