2005 GMC Sierra 1500 Q&A

2005 GMC Sierra 1500 Question: what is causing my speedometer to start sticking and oil pressure gauge on high

At times my speedometer is stuck between 10 and 40 mph when I haven't started moving and when driving moves slowly. other time it's fine or at least I think. It is starting to get worse. I was cited for doing 80 mph when my speedometer was reading 70 on cruise control. My oil pressure gauge is stuck on the high side all of the time. -
Answer 1
Sounds like a faulty cluster to me. Some clusters will have voltage regulators on the circuit boards that go bad, while others have gauges that go bad. I would have this diagnosed by a dealer level tech that sees these vehicles everyday. -