Are the gauges supposed to be live when the ignition is switched off (and key removed)?
On mine (1999 C2500 Suburban 5.7) of the four auxiliary gauges, only the voltmeter dies with the key off. The fuel, temp, and oil pressure gauges all show a reading with the key off. Oil pressure gauge is the weirdest. Without the engine having been run for days, if I switch the ignition on, the needle goes from wherever it stopped on shutdown to zero and when I turn the ignition off again it starts to rise. Doesn't go far but is off its stop.
Is this how they all are?
On mine (1999 C2500 Suburban 5.7) of the four auxiliary gauges, only the voltmeter dies with the key off. The fuel, temp, and oil pressure gauges all show a reading with the key off. Oil pressure gauge is the weirdest. Without the engine having been run for days, if I switch the ignition on, the needle goes from wherever it stopped on shutdown to zero and when I turn the ignition off again it starts to rise. Doesn't go far but is off its stop.
Is this how they all are?