2008 chevrolet Avalanche pops up low oil pressure when on idle and the pressure guage drop to 0psi. any explanation for this?
2 Answers
I have a 2008 Avalanche and had the same thing happen as well. Oil pressure gauge would initially read a normal level then suddenly drop. After checking the oil level I took it straight to the shop. Luckily it ended up just being a bad oil pressure sensor in my truck. If the problem wasn't caused by a bad sensor I'd assume the oil pump went bad.
1 people found this helpful.
Bowlerbrian25 answered 4 years ago
Had this happen to mine at 190k miles, when pressure would drop below 25 psi on gauge you will start to hear a lifter tick when cold, once it got to temp it would keep pressure over 25 psi. Long story short it turned out to be the O-Ring on the oil pump pickup tube. Once fixed, pressure never drops below 40 psi.
4 people found this helpful.