Electrical Problem in the gauges
 

Hey guys, so im having a serious problem with all my gauges, the gas gauge sucks n bounces all over n mainly sits on E so i never know how much gas i have. Also all my gauges jump around n my PRND321 and my mileage goes in an out all the time, n all the sudden today my mileage reset by its self somehow so the real mileage isn't there anymore. the rpms gauge just randomly shoots up n stops at like 4k n stays until i smack the dash, n i have to smack the dash every time to get it back, n also every light on the cluster pops up then i have to hit the dash again to get them all off! WTF is going on its really pissing me off ive had this thing for a month! I NEED HELP PLEASE!!!!!! Thanks!

My PRND321 and odometer has a gletch in it to, it goes in and out when ever. I have taken the gauge cluster out and looked at the harness and made sure everything is tight and not coroded and it still does it. Im thinking its something internal in the gauge cluster. If anybody has some information please let us know, Thanks.

I also had problems with My PRND321 and Odometer not working, if you are having problems with your gauge cluster you can look at my post (with pics) and what to look for, I fixed mine
https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/98-blazer-mileage-prnd21-%2A%2Afixed%2A%2A-16911/
usually an open in a solder joint.

Thanks pcfixit.