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Re: Rpm and speedometer gages goes crazy and radio goes...
If you have a light on the dash, you should get it scanned. Get code and post it. If you don't, disconnect the battery for 30 seconds, then hook back up.
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sounds like might b a main fuse. do u have a kick panel and a box under the hood? sometimes a main relay or fuse will cause many electric things to go out.
I'd wager that the fuse that controls the gauges is shot, or one of the internal connectors got unplugged (Fuse sounds more likely). Radio, Lights, and Turn Lamps are usually on seperate circuits.
This problem drove me crazy for 2 weeks. Then the car just stopped running. It would turn over but it would not fire. I replaced the crank and camshaft sensors. That did nothing. I replaced the ignition switch and the car started right up. So if your dash indicator lights start doing a light show for you and your gages jump around or just stop working. Try replacing the ignition switch.
I owen a 2005 hummer, my speedometer sometimes goes crazy, to back it up when it stays on a speed even when off, just start your engine turning the truck on then all the way to the off position, this will start to back the speedometer up, about 5 mph at a time, do this till it is set back to 0
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