OK, I have a 98 blazer 4x4 4.3 and I just did the big 3 upgrade but when i turned the car on my speedometer and gas gauge needles got stuck in odd positions. The gas gauge needle is pointing at the gauge below it and the speedometer is stuck at 100. The needles dont move when i turn the car off and on and the fuses look fine... WHat did I do??

 

Update: Just turned it back on and got the gas gauge back but the speedometer is still stuck at 100 and i tried driving it around a bit but didnt help

 

Takes the gauges back out....sounds like the speedo is missing an electrical connection....check the flex print for lifted contact.

 

Sorry for panicking It finally went away when i got on the highway and headed home after work. Not sure why it happened tho