The year and engine size would help us help you.
The engine on your 04 5.3L Chevy Tahoe could be knocking until it warmed up because of a bad fuel-air mixture. . The wrong oil could also be a cause.
What causes the change oil light to stay on after starting for 2 to 3 minutes maybe longer on a 2006 chevy equinox 3400 engine.
It is normal for the oil pressure to drop when the engine is warmed up and at an idle.
No.
Starting the motor.
Water coming out the tailpipe means there is water in the exhaust. This is not uncommon when the engine is cold and the exhaust is condensing. That situation should stop when the engine warms up. If the exhaust continues to have water in it after the engine is warmed up it could possibly indicate a leaky head gasket or cracked cylinder head.
clogged cat
check engine temperature sensor There cheap and if yours is weak or bad Computer tells engine wrong signal
It's lean. You have to figure out why.
What is the engine doing? Does it crank over? Does click?
It is probably a broken valve spring.
There's over 100 Chevy codes that will make it come on-you need to have code read