No oil pressure on start up.

[richs1]

I searched but didn’t find exact issue, but I could just suck at searching on here….

2012 Tahoe LTZ. Randomly on startup, zero oil pressure. Rev engine to 2000rpms and gauge jumps up to 40. Stays around 40 during the drive, idles about 26-30.

Any ideas what is causing it to register zero on startup? I have changed the sensor and screen, still having the issue.

I appreciate any help I can get.

 

[swathdiver]

I searched but didn’t find exact issue, but I could just suck at searching on here….

2012 Tahoe LTZ. Randomly on startup, zero oil pressure. Rev engine to 2000rpms and gauge jumps up to 40. Stays around 40 during the drive, idles about 26-30.

Any ideas what is causing it to register zero on startup? I have changed the sensor and screen, still having the issue.

I appreciate any help I can get.

Pump losing prime? Not sure. Let's start by asking what brand and weight oil are you using? What oil filter are you using? How long has this been going on?

 

[iamdub]

I'm with ^^^James.

Does it do it only after it has sat for a while, like over night?

 

[richs1]

It’s random, can be cold start or after driving and it’s been parked for 20 min. No clear cut “time”. Doesn’t do it every time.

Running mobile 1 5w30 with mobile 1 filter. That’s what I run in my other Tahoe(2011) and my C5.

 

[swathdiver]

It’s random, can be cold start or after driving and it’s been parked for 20 min. No clear cut “time”. Doesn’t do it every time.

Running mobile 1 5w30 with mobile 1 filter. That’s what I run in my other Tahoe(2011) and my C5.

And has it only just begun, dang, another song, since the last oil change? If so, I would put in a new oil filter.

 

[iamdub]

It’s random, can be cold start or after driving and it’s been parked for 20 min. No clear cut “time”. Doesn’t do it every time.

Running mobile 1 5w30 with mobile 1 filter. That’s what I run in my other Tahoe(2011) and my C5.

Dammit. You're not making this easy.

What happens if you don't rev it when it's at zero?

 

[iamdub]

And has it only just begun, dang, another song, since the last oil change? If so, I would put in a new oil filter.

Sounds like you're experiencing my world, just with a much older soundtrack.

 

[richs1]

And has it only just begun, dang, another song, since the last oil change? If so, I would put in a new oil filter.

No, it’s been doing it since I bought it a month ago, the previous owner is the one that told me about it, so it’s been going on for a while.

 

[swathdiver]

Sounds like you're experiencing my world, just with a much older soundtrack.

Saturday mornings growing up my dad would play these records in the morning.

 

[richs1]

Dammit. You're not making this easy.

What happens if you don't rev it when it's at zero?

I haven’t had the guts to just let it sit and see. I don’t know if it will come up on its own or not. I will add, there is. Zero engine noise, no ticks at all.