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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 5787
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have a 2006 Hummer H2. The engine oil pressure gauge, all

Customer Question

I have a 2006 Hummer H2. The engine oil pressure gauge, all of a sudden, has defaulted to 80 pounds. stays there while running, goes to zero when turned off. oil level good, no engine lights, temps all normal. is this a sensor that has failed?
JA: How many miles are on the vehicle? And when was the last time it was serviced?
Customer: 152000, was serviced two weeks ago, runs like new.
JA: Are you fixing your H2 yourself? What have you tried so far?
Customer: I checked for loose electrical, all looks well. have not changed sensor. don't believe it is an oil pump, if it were I would get an engine malfunction.
JA: Anything else you want the mechanic to know before I connect you?
Customer: i take good care of her, oil change with new filter every 4000 miles.
Submitted: 8 months ago.
Category: GM
Expert:  Jared D replied 8 months ago.

That's a pretty common failure.

The oil pressure sending unit is at fault. It's not terribly hard to change. You will need a special socket which can be found on amazon for about $15 and a new sending unit. Do you want to replace it yourself?

Expert:  Jared D replied 8 months ago.

I can send a diagram showing how to replace it if that would help.