Oooo man i just spent a ton of money trying to figure this problem out. i have a 99 bravada to. let me guess the gauges lite up but the rpm and spedo do not work. also the transmission wont shift while in drive. this is how i fixed mine. on the driver side, open the door there is a fuse box on the side of the dash. it is probly shorted out, even tho the fuses arnt blow it could still not be working. here is what u can to to fix it temporarly. take out the fuses that say dash and ignition, now run a hot wire to the fuse box and touch it to the ignition and dash fuse spots. and while u have both of them connected turn the car on and put it in drive and it should take off in first gear and run how it should. (when u connect the hot wire to those spots the dash should come on, even tho the key isnt on)
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