2014 Chevy Silverado - Oil pressure problem?

[andiegirl]

Hi there! New here. I have a 2014 Chevy Silverado, bought it new and I'm at 104,000 miles. In the past year I have replaced the engine harness, transmission and oil pump and fixed a few evap leaks. My check engine light came on this morning and leading up to today I have noticed the oil pressure gauge acting funny sometimes. When I'm at an idle it drops to 20 once the engine warms up and then goes back up and holds at 40 while moving. Sometimes when I'm driving, not accelerating but holding my speed the gauge will go to 60 or 80 real quick and shoot back down, its really weird.  Last night driving home same thing but this time I felt what I thought the engine rev a little. Other than this the truck runs great, gas mileage is good, engine temp is good but the oil pressure gauge and last night and now the check engine light on is freaking me out. Any help would be greatly appreciated.  

Edited August 19, 2021 by andiegirl
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