A 3.4l engine with aluminium oil pan had a oil level sensor near the plug sometime it stick(it is like a float)
Codes can be reset. that might work
SOURCE: The service engine soon light keeps coming on
take the truck to autozone and have them run the diagnostic machine on it, but make sure to take it when the light is on. I hope that helps you out.
SOURCE: service engine soon light just came on
May save yourself a fair bit of money by not guessing, autozone will scan it for free & then you should know exactly.
SOURCE: 2001 blazer service engine soon light is on
take it to have it scanned if you have a autozone in your area they will do it for free
SOURCE: SERVICE ENGINE LIGHT ON FAILED EMISSIONS
Yes, take it back. The might of replaced the Egr valve to turn off the light. Don't let them charge you for retesting it, that's why you took it in in the first place.
SOURCE: 1999 GEO TRACKER - CHECK ENGINE SOON LIGHT
Don't panic!! LOL Just take the vehicle to an autoparts store and have them use a scan tool to retrieve any fault code(s) stored in the computer. Most parts stores will do the scan at no charge. The code or codes will help note any problems or potential problems that the computer has identified. Sure hope this helped and best wishes.
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