My dash board doesnt work nothing no heat gauge

Faulty instrument cluster. You will need to replace it to fix this problem GM has had many problems with these cluster along with some others.

The warning lights should be listed in your owners manual. It could be a warning for one of the gauges, or engine/transmission problems.
They are more common on Toyota Prius.

if you saying the fan wont blow it may need a fan motor not uncommon it might be a speed switch if it has one some time you can hook a wire on the back of the speed switch plug in to get it on high use a 14 gauge wire or bigger a small jumper bent in a loop with the rubber peeled off the ends and shove them in the switch plug find the 12 volt ht wire on the plug with light or vom then try the other wires one at a time til fan runs with ignition switch on

Well, if a mechanic on-site can't find the problem, you probably need a technician trained on Pontiac or GM systems.
Automotive systems today are so complicated and diverse, I couldn't even hazard a guess, and I've worked on cars and trucks for over 30 years. Us shadetree mechanics have just about seen our waterloo. Sorry, Denise.

There are few help links provided to resolve this issue of dash board light not working.Click the link below to go through its procedure:-----Dash board lights not working? http://repairhelpcenter.blogspot.in/2012/02/dash-board-lights-not-working-on-gmc.html
----------- light in the dash blinks? http://repairhelpcenter.blogspot.com/2012/01/overdrive-light-in-dash-blinks.html
-----------Orange O/D warning light flashing on dash? http://repairhelpcenter.blogspot.com/2012/01/orange-od-warning-light-flashing-on.html
---------gauge on the dash quit working on? http://technoanswers.blogspot.com/2012/01/temperature-gauge-on-dash-quit-working.html---------No 4x4 light on dash? http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html
----------Digital Dash Display not working? http://schematicsdiagram.blogspot.com/2011/12/cadillac-seville-digital-dash-display.html
---------warning on dash and alarm sounds? http://schematicsdiagram.blogspot.com/2011/12/chevrolet-tahoe-hood-open-warning-on.html
---------Light Stays On dash of car? http://schematicsdiagram.blogspot.com/2011/06/brake-indicator-light-stays-on-dash-of.html
----------The ABS and Traction Control Lights stays ON dash of car? http://schematicsdiagram.blogspot.com/2011/06/abs-and-traction-control-lights-stays.html
----------warning lights remains steady on dash? http://schematicsdiagram.blogspot.com/2011/12/abs-brake-warning-lights-remains-steady.html
---------light bulb under dash replacement?

http://schematicsdiagram.blogspot.com/2011/12/heating-knob-light-bulb-under-dash.html

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Parking lights, tail lights and dash lights not working? http://technoanswers.blogspot.com/2012/01/parking-lightstail-lights-and-dash.html

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How to replace Instrument panel and dashboard?

http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-instrument-panel-and.html

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Tail lights and dash light fuse keeps blowing? http://technoanswers.blogspot.in/2012/02/tail-lights-and-dash-light-fuse-keeps.html

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This will help.

Thanks.

These lights for the dash are controlled by a rheostat instrument control dimmer switch next to the main light switch for the headlights, it is either turned off (have seen this dozens of times) or it is defective. Below is a picture of the switch assembly I speak of. The thumb wheel next to the knob is the dimmer control.

firstly you need a new sensor or drive on the gearbox ,its located above the passenger side drive shaft where the diff is ,change this first so it works then see if the ABS light goes out ,temperature gauge could just be a faulty sender unit on the engine .If the ABs light still doesnt go when speedo is repaired then check the sensors with a automotive meter and also check the toothed gear ring on each wheel as they do sometimes crack and come loose on the drive shaft .This fault will also throw the brake warning lights on for this vehcle

Try to tightin up the light bulb. be aware the only way to do this is to remove the hole dash. if you do not know how to do this i would recamend you take it to a shop are ask me to go through step by step directions.

Check for fuses and fusible links that may be tripped or blown.

Next, check for grounding issues someplace easy to reach like the heated seat connectors.

Most dummy lights work by choosing the warning light path over the circuit path when the circuit path is higher resistance. Which may explain your dash warning lights.

So, what I am trying to say is...you are looking for a open ground in a big big place....like under the hood at one of the major fuse/relay/fusible link points.

Check it out. Good luck and be careful.

It sounds like there's a short in the wiring and I assume dashboard light to mean the lights for your gauges and not the lights for your a/c, fan, heat. You'll have to remove your dash board to get at your gauges and then you'll have to test each wire with a voltmeter for resistance to see which is shorted... I've seen wires that for some reason, will fuse together and short out