Sounds like it'* in the cluster. When I picked up my 95 SSEi only the oil pressure gauge was supposedly bad. Boost was very good, temp was questionable and oil seemed fine when I picked it up.

I did a quick and stupid 2am cleaning of my dash. Now my temp is whacked badly and so is my oil pressure. I'd suggest cleaning again and maybe using some dielectric grease...it'* becoming my favorite weapon against problems on Bonnie.

not cluster fund out the gm sending unit is 250 ohms like all the all data says but my gauge is a 90 ohm gauge like pre 96 any ideads on how to fix the problem most 96 clusters i've seen that are 250 are one plug mine is 2

Check your title and inside the drivers door of your car for production dates. If your title says 96 then I bet your production date is mid 95. They used a wiring harness from 95 year and all the goodies. Someone replaced the sending unit not knowing it was incorrect for the car...because it was correct for the year.

I'd say either get the sending unit for 95 with the correct resistance or talk to an electronical person about adding a resistor in line to drop your ohms to the right range.

And then hit radio shack or pm me for the resistor...I've got tons..but couldn't tell you what ohms would be right to drop you down.

production was 5 of 96 another words early 96 as far as i know the sending unit was the original when we replaced it fuel gauge had worked properly for the previous owners but went dead about 1 year ago replace with exact replica of the original one
are you sure a resistor would work wouldn't that up the resistance at the sender which is the problem already to much resistance

Ok...now that doesn't make sense. Production on the next year usually begins around Aug/Sep. So your car was near the end of the production year.

Why the wrong harness and cluster is a question you'll never know...unless something really reallllllllllly bad happened to this car at one point and someone did a ton of work....but doubtful

Resistors resist electric current...therefore lowering the amount that gets through.

Problem solved....went to the local treasure yard and pulled a sender from a '95 Grand Am and adapted the resistor part to the Bonneville sending unit...tried it out before i put in the tank and seems to be pretty accurate, will have to get a '95 B'ville sender to keep around if this one bites the dust.....thanks for all the input everyone... ...on to the next project.