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Re: 98 Blazer - Odometer unlit
The instrument cluster needs to be removed.
I used a 7mm hex head socket to remove the hex screws that hold the Instrument cluster in place (the dash around the cluster will need to be removed). Unhook the 12 pin connecter as you pull the cluster out (be careful of the flasher button on top of the steering column).
With the cluster out – carefully remove the plastic framing and the plastic around the two small circuit boards behind odometer and PRND321. You should see a white 9 pin cable on each board.
I just resoldered all the pins - both sides.
Just to confirm - before you resolder you might want to look at the solder connections with a magnifying glass to see if there are any cracked joints.
Good luck
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