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Re: dash lights for the heat and temperature burned out
A lot of these were L.E.D. Lights and have to be Soldered back on with new ones. Some were Small Bulbs. You just need to Dig in to it and Find out Which one it is. You can get the LED's at Radio Shack.
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Probably just the thermocouple They are made of two dissimilar metals spot welded together and contact can break down at the edges resulting in reduced efficiency, hence lower numbers than expected at the gauge end. You don't even want to talk about it if its the gauge itself. Console clusters are built as a unit. No Replaceable parts.
It was going to cost me $600.00+ plus installation to fix 3 burned out micro-bulbs on my Avalanche Dash. Not even the bulbs are replaceable anymore. I was able to find some after some looking, but I haven't a clue where you'd buy the correct gauge part. It's NOT like it's a 1/64th scale Street Light. Those you can find.
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.
I've done this before. You have to remove the cover for the gauges and speedometer, which is on a sort of a circuit board. The whole thing comes out in one piece, or did on the car I was working on. Then you just locate the burned out bulb, go buy a replacement, replace it and you're good to go, It's easier than you might think.
Yes you can replace the lights in your dash. You will have to remove the gauges to get at them. On the back side of the gauges the bulbs are in small holders that quarter turn to release them. The bulbs that are burned out should be obvious as they will be silver black from the burn out. Take one of them with clean numbers visible to your local parts store and they should be able to match them up for you. I would expect these bulbs to cost about $1 each.
I would also suggest that you get a Haynes repair manual at your local parts store. These are model specific so they are considerably cheaper at about $20. In the book you should be able to find detailed instructions on how to remove the instrument panel.
The next thing you should check is the engine thermostat. If you have dash gauges, see if the engine temp reaches regular operating temperature in under 5 minutes of driving. If it doesn't, your engine (radiator) thermostat is stuck open and needs to be replaced. Not only will you get no heat with this bad component, but it will cause the engine to get sludgy and dirty inside from varnish and un-burned-off water vapor in the crank case. Not a good thing. Good luck.
Your dash needs to come out. These bulbs push into a plastic piece that "twists" into the back of the dash board. (About a 1/4 turn) Unless you can get at them from underneath, but I think it's to tight.
Check fuses on fuse panel. Take car to autozone and have them find / locate your fuse block. You check fuses and light bulbs with a volt ohm meter.(vom can be bought @ wal-mart, target, kmart etc. an investment - not a cost.
Let there be light . . .Good luck
From one female to another...taking the dash off is a big job. you have to pry off the entire frame first to get to where you want to go. Once you have everything off, the lights are easy. Just remember to place everything in order as you took it off, makes things easier to put back together.