Help with my 'burb...AGAIN

[Highway Star]

Hey folks...

I have a problem with my DD '96 gmc suburban. I was driving home last night and the CHECK GAGES light came on and my oil pressure went to 0 a few times. It seemed like it wanted to happen more at idle (light and oil pressure drop) or lower engine speeds, and didn't happen but intermittently.

I thought that gauge wasn't a "real" oil pressure gauge, and didn't REALLY show the true engine oil pressure. I was driving gingerly, and carefully watching/listening, but still needed to make it home. This is my only vehicle right now.

Before I made it home, a ticking sound started to accompany the light and gauge failure. I say gauge failure because I'm hoping it is a sending unit or electrical connection somewhere, and not that the engine is about to let go. I can't (as if anyone can) afford for it to die right now. When the engine was up around 2500 or so, oil pressure would spurt back up to around 40-60 on the gauge and the light would go off simultaneously.

Anyways, about a mile from home, a distinct knock started to become prominent, but would subside when the CHECK GAGES light went off.

I'm lost, know nothing about where to start, and am TERRIBLY worried that a rod or something is knocking. What a nice Christmas present.

Any ideas? Help please. Thanks.