fuel gauge

Hi guys,
on my 12/'98 Camaro V6 (Germany) 125.000 km sometimes the fuel gauge is wrong.
Even after 100 ... 200 it indicates full tank, after 200 ... 300 then
slowly the fuel gauge starts with indicating correct level.
This happens only sometimes, not always
Is it easy to change the fuel gauge ?
What principle is here working ?
Thank you in advance
Ralf
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You probably have a ground problem. there are 3 wires on most senders. One is a ground, one hot and one sends to the gage. Don't touch the sires together or you can toast the sender.
Ralf Neitzel wrote:

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