That's good advice. I know for a fact the ground is perfect on the rear sending unit Have to check the one on the front. But I have gone over all the connections on the truck inside and out and used dielectric grease on all connections through out the truck. I also have at work a old school GM...
Hi I'm new here to the site. I'm a GM Tech who use to work for the dealership but I'm on my own now. I am at a shop We have a 1998 C3500HD 6.5TD Auto with dual tanks It's a Repo body tow truck. We have had many problems over the years with this truck. Right now and has been for a wile the truck...