I recently bought a ultragauge last wk. It works on my truck. But I just put on my dads 2000 gmc extended cab. It does not turn on. Truck is running an nothing. Is the ultragauge only meant for one vehicle, or is there a fuse out somewhere for the ob2...if so where. Thanx in advance

 

Ive got one I put mine on the girls 96 s10 blazer and it read it just fine

 

Ya it works good on my 84 wit a 5.3 swap. It just doesn't come on on the gmc. I'm thinking maybe there is no power like a fuse might be out. I checked the fuses an everything is good. Just doesn't work on gmc for some reason

 

If the gauge doesnt power up check the underhood fuse block, fuse labeled "cigar" it also feeds power to the OBD2 port. If looking at the fuse block from the left fender it will be towards the rear of the truck near the outside of the box. Good luck

 

Thanx ill check this wkend. Didn't think to check fuses under hood just ones in cab