Hello, my name is XXXXX XXXXX welcome to JA.
The "Service Engine Soon" light is not trelated to the oil life monitor, nor is it related to oil consumption. This light means that there is something wrong with the vehicle and it needs to be diagnosed using a scan tool in order to retreive the code that is turning on the "SES" light, and following the diagnostics for the applicable code.
The lights, or messages, that occur due to oil level will be "check engine oil" or "Engine oil low". The message for service will say "change oil soon", or some vehicles can turn on a "service vehicle soon" when there is a minor issue like a brake light or something.
Checking your engine oil is always important, but in this cadse, you need to start by getting the code that is turning this light on. If you intend to diagnose theis yourself, I can help you. If that is what you'd like to do, you can stop by a store like Autozone to have them puill the trouble code for you.
I apologize for having to leave the house for the afternoon.
I live in a very small town and there are no Autozone stores. I would like to see if the garage down the street (not where I had the car serviced the last time but have in the past) would be willing to give me the error code. Besides the oil being down and dirty, It appears the coolant is also low. I recently had the water pump replaced and the anti freeze refilled in March 2009. I'm getting more confused.
Ok, I see.
There may be new coolant leak or source of oil consumption, but in order to know why the light is on, we just need the code.
Be sure to top off the coolant and oil right away.
Ok, thank you for the information.
This code does invlolve a crank sensor circuit. Your vehicle uses 2 crank sensors that are positioned right close to each other. Thses sensors have been updated by GM, so replacing both of them is adviseable, but the sensor that is involved in this code is sensor B.
There is, however, a potential that the code could be caused by a wiring problem. There will be some circuit testing necessary in order to verify that the sensors being replaced will resolve the problem. A good visual inspection of the wiring in the area could reveal a problem as well.
I hope that helps you pinpoint the problem. It doesn't explain any new coolant or oil leaks, but that is what is turning on the light.
I don't consider the crank sensor issue to be a huge expense as far as repairs go, they aren't too bad.
The thing I'm more concerned about are the oil and coolant leaks. These cars develop some leak issues that require a 20 hour engine teardown in order to repair, so It would be worth considering since you say there are no real Cadillac repair centers near you.
I don't want to scare you into getting rid of the car if you aren't ready yet, but this is worth considering if you were already debating.