Its hard to say for sure but chevy uses the oil pressure sending unit as a back up power system for the fuel pump so if the fuel pump relay blows out power will go to the pump through to oil pressure unit so even though the gage is working it could be a problem inside the oil pressure uint for this secondery back up fuel pump system. Dose the gage stay at 45 PSI when the light is on or drop down when the ignition is turned off if it holds pressure i would look at the pressure sending unit its probably not giveing a correct reading not to say you have an problem with your oil pressure its to new for that but you need to be able to trust the reading
http://schematicsdiagram.blogspot.com/2011/12/car-turns-off-due-to-low-oil-pressure.html
------------
leaking oil from timing cover?
http://technoanswers.blogspot.in/2012/02/toyota-corolla-leaking-oil-from-timing.html
----------
For more oil and oil pump details check out the direct links below: ---
How to Replace Oil Pan on car?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-oil-pan-on-audi-a4-and.html
--------
How to Replace an Oil Pan Gasket?
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pan-gasket.html
-----------
HOW TO REPLACE AN OIL PUMP
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pump.html
----------
HOW TO CHANGE ENGINE OIL AND FILTER
http://schematicsdiagram.blogspot.com/2011/07/how-to-change-engine-oil-and-filter.html
----------
HOW TO REPLACE AN OIL PRESSURE SWITCH (SENSOR)
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pressure-switch.html
-----------
How to Check Differential Oil Leaks and Replace Oil
http://schematicsdiagram.blogspot.com/2011/07/how-to-check-differential-oil-leaks-and.html
----------
HOW TO PERFORM A BASIC ENGINE TUNE UP-OIL CHANGE
http://schematicsdiagram.blogspot.com/2011/08/how-to-perform-basic-engine-tune-up-oil.html
-------
Oil pan Gasket on car?
http://howtobyme.blogspot.com/2011/11/oil-pan-gasket-on-1998-toyota-tercel.html
---------
Oil pressure for car?
http://schematicsdiagram.blogspot.com/2011/12/oil-pressure-for-2001-gmc-jimmy-v6.html
----------
How to replace Oil Pan on car?
http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pan-on-2008-honda.html
---------
How to replace Oil Pressure Sensor on car?
http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pressure-sensor-on.html
-----------
How to replace Oil Pump on car?
http://howtobyme.blogspot.com/2011/12/how-to-replace-oil-pump-on-2008-honda.html
----------
Car oil leak?
http://schematicsdiagram.blogspot.com/2011/12/car-oil-leak.html
----------
Car oil leaks from valve cover gasket?
http://schematicsdiagram.blogspot.com/2011/12/car-oil-leaks-from-valve-cover-gasket.html
----------
Oil light blinks on dashboard?
http://schematicsdiagram.blogspot.com/2011/12/oil-light-blinks-on-dashboard.html
-----------
Oil pressure issues on car?
http://repairhelpcenter.blogspot.com/2012/01/oil-pressure-issuers-on-toyota-tundra.html
-----------
Oil leaks from air filter on ford?
http://technoanswers.blogspot.com/2012/01/oil-leaks-from-air-filter-on-ford.html
---------
Wire running from oil pan to alternator?
http://technoanswers.blogspot.in/2012/02/wire-running-from-oil-pan-to-alternator.html
--------------
Why car leaks oil from oil filter?
http://schematicsdiagram.blogspot.in/2012/02/toyota-camry-leaks-oil-from-oil-filter.html
------------
Why engine is consuming lots of oil?
http://schematicsdiagram.blogspot.in/2012/02/2008-scion-xb-24l-engine-is-consuming.html
-----------
Maint REQD message on car dash?
http://schematicsdiagram.blogspot.in/2012/02/maint-reqd-message-on-2008-lexus-rx350.html
------
Remove Sump oil pan?
http://repairhelpcenter.blogspot.in/2012/03/remove-volkswagen-sump-oil-pan.html
--------
Sump not coming OFF?
http://repairhelpcenter.blogspot.in/2012/03/sump-not-coming-off.html
-----------
How to remove the sump on car?http://repairhelpcenter.blogspot.in/2012/03/how-to-remove-sump-on-vw-beetle.html----------Car oil sump removal diagram?
http://repairhelpcenter.blogspot.in/2012/03/volkswagen-beetle-oil-sump-removal.html
---------
This will help.
Thanks.
http://schematicsdiagram.blogspot.com/2011/12/car-turns-off-due-to-low-oil-pressure.html
------------
leaking oil from timing cover?
http://technoanswers.blogspot.in/2012/02/toyota-corolla-leaking-oil-from-timing.html
----------
For more oil and oil pump details check out the direct links below: ---
How to Replace Oil Pan on car?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-oil-pan-on-audi-a4-and.html
--------
How to Replace an Oil Pan Gasket?
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pan-gasket.html
-----------
HOW TO REPLACE AN OIL PUMP
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pump.html
----------
HOW TO CHANGE ENGINE OIL AND FILTER
http://schematicsdiagram.blogspot.com/2011/07/how-to-change-engine-oil-and-filter.html
----------
HOW TO REPLACE AN OIL PRESSURE SWITCH (SENSOR)
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pressure-switch.html
-----------
How to Check Differential Oil Leaks and Replace Oil
http://schematicsdiagram.blogspot.com/2011/07/how-to-check-differential-oil-leaks-and.html
----------
HOW TO PERFORM A BASIC ENGINE TUNE UP-OIL CHANGE
http://schematicsdiagram.blogspot.com/2011/08/how-to-perform-basic-engine-tune-up-oil.html
-------
Oil pan Gasket on car?
http://howtobyme.blogspot.com/2011/11/oil-pan-gasket-on-1998-toyota-tercel.html
---------
Oil pressure for car?
http://schematicsdiagram.blogspot.com/2011/12/oil-pressure-for-2001-gmc-jimmy-v6.html
----------
How to replace Oil Pan on car?
http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pan-on-2008-honda.html
---------
How to replace Oil Pressure Sensor on car?
http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pressure-sensor-on.html
-----------
How to replace Oil Pump on car?
http://howtobyme.blogspot.com/2011/12/how-to-replace-oil-pump-on-2008-honda.html
----------
Car oil leak?
http://schematicsdiagram.blogspot.com/2011/12/car-oil-leak.html
----------
Car oil leaks from valve cover gasket?
http://schematicsdiagram.blogspot.com/2011/12/car-oil-leaks-from-valve-cover-gasket.html
----------
Oil light blinks on dashboard?
http://schematicsdiagram.blogspot.com/2011/12/oil-light-blinks-on-dashboard.html
-----------
Oil pressure issues on car?
http://repairhelpcenter.blogspot.com/2012/01/oil-pressure-issuers-on-toyota-tundra.html
-----------
Oil leaks from air filter on ford?
http://technoanswers.blogspot.com/2012/01/oil-leaks-from-air-filter-on-ford.html
---------
Wire running from oil pan to alternator?
http://technoanswers.blogspot.in/2012/02/wire-running-from-oil-pan-to-alternator.html
--------------
Why car leaks oil from oil filter?
http://schematicsdiagram.blogspot.in/2012/02/toyota-camry-leaks-oil-from-oil-filter.html
------------
Why engine is consuming lots of oil?
http://schematicsdiagram.blogspot.in/2012/02/2008-scion-xb-24l-engine-is-consuming.html
-----------
Maint REQD message on car dash?
http://schematicsdiagram.blogspot.in/2012/02/maint-reqd-message-on-2008-lexus-rx350.html
------
Remove Sump oil pan?
http://repairhelpcenter.blogspot.in/2012/03/remove-volkswagen-sump-oil-pan.html
--------
Sump not coming OFF?
http://repairhelpcenter.blogspot.in/2012/03/sump-not-coming-off.html
-----------
How to remove the sump on car?http://repairhelpcenter.blogspot.in/2012/03/how-to-remove-sump-on-vw-beetle.html----------Car oil sump removal diagram?
http://repairhelpcenter.blogspot.in/2012/03/volkswagen-beetle-oil-sump-removal.html
---------
This will help.
Thanks.
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