On your vehicle when the Check engine light comes on and a code is store, the driver can retrieve the codes themselves with the onboard diagnostics. Put the key in the on position and watch for the light.The light will blink in a code .FOR EXAMPLE:
If the light blinks 4 flashes then a pause then 3 flashes then .......yep code 43. Easy enough.
Oh yea, by the way A bad intake manifold gasket would be a constant problem which would cause a vacuum leak. ( That's if it effected engine performance) A vacuum leak would be sensed at the Oxygen sensor as a lean condition. Code 44
Try the codes yourself
http://www.troublecodes.net/saturn/
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