2014 Chevy Silverado - Oil pressure problem?

andiegirl · August 19, 2021

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.

JimCost2014 · August 19, 2021

2 hours ago, andiegirl said:

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.

Welcome to the site.

Oil pressure sounds normal for the most part, with the spike at speed being a little odd, since there is no load being applied.

CEL, best place to start is to see what codes are present, otherwise you could spend the rest of your life guessing.

newdude · August 19, 2021

These engines do have a variable stage pressure pump. Over 3500RPM the oil pressure will spike up to the second stage and put out 65-80psi. At hot idle it typically will be 22-30psi, acceleration under 3500rpm it typically pulls 40-50psi and about 40psi cruising.

If you find a P06DD in there when you scan it, you will need an oil pump however. P06DD is 95% of the time the death knell of the oil pump variable pressure control solenoid. Solenoid is not serviceable outside of a new oil pump.

Scan it and see what codes you get.

Edited August 19, 2021 by newdude