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Message:: [QUOTE="believe456, post: 11809461, member: 163625"]So here’s the thing. Shop did valve adjustment/ transmission valve replacement and marker id light. They drained the batteries by not turning off the lights over night. I picked up the truck they had to jump it to get it running. I get the truck back the only gauges working are voltage/ air pressure/ fuel/ suspension load/ and pyro temp. When you open the door the mileage pops up but when you start the truck it looks like this - - - - - - -. I checked all fuses and everything. I removed the blower motor the relay and the hvac control (because the knob was broke) and each item i removed made the gauges start working one by one. The next day i get in the truck and everything is still working but it’s going in and out (all hvac items unplugged) so i figured it couldn’t be related. I bought new blowe new relay new hvac Knob hooked it all up and now everything went back dead. Ps my eld is flicking as well. So I’m assuming it’s an engine wire issue. But what could have they messed up in those areas. It seems like everything that isn’t working is receiving info directly from motor (speed rpm oil pressure turbo mileage etc)[/QUOTE]