2002 GMC Sonoma Service Engine Lite is on

99,800 MILES • 6 CYL • 4WD • AUTOMATIC
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RLECHNER2
  • MEMBER
  • 1 POST
What are the possible problems associated with the illumunation of the Service Engine Lite.
Nov 27, 2009 at 4:39 AM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
Too many to try and Guess! Several hundred codes can cause an MIL(service enge) light. Do this.
First thing you need to do is have the codes read, Post the results with the code number(s). Even if the service engine light is not on, there should be freeze frame data stored.
If it won't make it, buy a cheap scanner, they can be had for 30-40 dollars, a good investment, since they cover all cars sold in the USA from 96 on...
If the light is blinking, it means possible damage to the converter...service it right away!
Nov 27, 2009 at 4:43 AM
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