'04 Yukon 6.0L Oil Pressure Reading Lower Than it Used to

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OP
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Beer 30

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Hi all - just an update on my lower oil pressure issue since some people asked for it.

I was too busy to do much diagnosing myself, so I took it to a shop. They replaced the oil pressure sending unit ($200), but that didn't fix anything. Pressure remained between 20 and 30. So, they spent another couple of hours on it - no charge - and discovered that the pressure is fine, right at 40, and the signal being sent to the instrument cluster is reading correct, but the gauge is not working right.

So, I ordered a set of stepper motors for the instrument panel gauges and will replace them in the next couple of weeks. I'll let everyone know if that solves the problem.

Thanks again for the suggestions and help.
 

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