The fuel pump was replaced on my 2006 quad cab. When I filled it up with gas, the gauge stopped at 3/4. After about 10 minutes it started to move slowly up to full. Took it back to the garage that installed it and they put a different mfg pump in. Still did the same thing. Took it back again. They pulled the tank again and manually worked the sending unit and told me it's working fine. It's still not functioning properly. It has gotten better but still not the same. Could this be a gauge issue?