Recreational Vehicle Lpg Tank Valve/gauge problems of the 2002 Chevrolet Trailblazer

Oil pressure gauge drops to 0 when motor is idled up oil pressure returns to normal. This has been an intermittent problem and does not occur all the time. It has happened over the last 2 to 3 weeks and only when I come to a stop. Truck idles fine and shows no other problems.

Speedometer, gas, and tach gauge stopped working, would work some and then gradually stop working all together, speedometer gets stuck on approx 20mph or 120mph, gas gauge off meter.

Bought 2002 Chevrolet Trailblazer which operated fine until 2 yrs ago. First, the speedometer goes nuts, the needle registers faster speeds than car is going. Some days it would work, some days it would not. Now it points past 120 mph, directly downwards, stuck there and does not move at all. Sitting still in my driveway the speedometer shows its going over 120 mph. The gas gauge goes nuts next. The needle goes past full and back around to the gas pump icon and stays there. The tachometer followed suit doing the same thing and indicating rpms past the 9000 range and doesn’t settle back at zero with engine off. And now the temp gauge is showing 200 - 250 degrees when the engine is started. As far as I can tell the voltage and battery gauges are still showing normal readings - so far. Am I speeding, is my engine about to blow up, or am I going to run out of gas? I have no way of knowing if I am driving the speed limit or unknowingly speeding, no idea how much gas is in the tank, unaware that my engine is revving up into a dangerous range or about to blow up; or if my engine is dangerously overheating. I depend on the instrument cluster to alert me to those dangers. There should have been a recall on these failing instrument clusters a long time ago but although hundreds have complained gm says they won’t fix this issue on the Trailblazer. They don’t care that we Trailblazer owners must drive our vehicles without working instruments. This situation is dangerous.

I have a 2002 chev. Trailblazer and 2 weeks ago the speedometer went upside down- it is not telling me I am going over 100mph or it tells me im going 0-to nothing. The gauge is upside down and will cost over 500 to get if fixed this is a new vehicle I don't think this is fair- if it were a 95 model I wouldn't be surprised but how many vehicles loose a speedometer gauge over within a vehicle that new?.