2002 yukon set oil change light - 2002 GMC Yukon Denali

this is in the operators guide, lost that?

My suggestion would be to check it with a mechanical gauge.
You would need to use a Tee fitting to use the sensor to have fuel pressure.
If the mechanical gauge shows steady pressure at idle, it could be a problem in the wiring or the instrument cluster.

Turn the key on and listen for the fuel pump to run for about 2 seconds. If you don't hear it run the may be a problem with the fuel pump relay or its cicuit. The extra cranking from the first and second try builds up oil pressure and that will energize the pump through the oil pressure switch.

If the pump runs for the two seconds try to start it on the first key turn. If it still does not start there may be a pressure or deleivery issue. So many vehicles no longer have external servicable fuel filters, yours may not. If it does though you may want to change it.

Also, does a security light come one and saty on in the dash?

Hello: Try this, Key on engine off Check for flor mat(s) under accelerator pedal, depress accelerator pedal all the way to floor 3 times within 5 seconds.

the oil level sensor is located in the oil pan. There should be a yellowish/brownish plastic looking large diameter nut sticking out the side of the pan with some wires going to it. Unplug those wires and see if the message goes away. If it does then don't worry about it until you have the means to do so. Just monitor the oil level ever thousand miles or so.

The senors are pretty reasonable priced and available form the dealer. They are threaded into the pan and a medium sized crescent wrech is all you really need to remove and install.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Look at the mass air sensor next to the air filter, check to make sure the clamps are tightend and it is properly sealed. Quick oil change places ar famous for not putting it all back together properly after checking the air cleaner.

look in the manual......turn the ignition to the on position not starting it of course and then pump the gas petal 5 times then the light will blink a few times turn off then back on...problem solved

Ah, believe this one is done by:

With engine off, turn ignition key on. press accelerator pedal down 5 times quickly, all the way to the floor. Light should blink then go off.

Look where the wires go to the lights underneath. Grab the white rubber piece that goes into the light housing and twist 1/4 turn. Then pull. The bulb just pushes into its terminal in the white rubber.

FROM: LustyKid

Denalis are famous for clogged fuel filters. Change the fuel filter first and see what happens, Get the code for the check engine light. It could be you have a clogged EGR ports. Remove EGR valve and clean out the ports, replace with new gasket and see what happens. Advise of results.