2004 Chevy Avalanche. Low oil pressure light comes on at idle. Changed sensor and still does it. Been parked since it first started. Oil pressure picks up as long as not idling. Guessing needs a o-ring between oil tube. Has 5.3 with quiet tick. It still ran and shifted fine when parked. Have owned since 2018. Milage is around 180k. No trades, no payments, no part out… Clean and clear title. Price is obo