I have a 89 silverado and the services engnie soon lights goes on and off truck runs great any idea maybe why its doing it?
Sunday, January 9th, 2011 AT 1:48 AM
1 Reply
JACOBANDNICKOLAS
MECHANIC
109,755 POSTS
When the light is on, take it to a nationally recognized parts store and have them scan the computer. If the engine continues to run well, chances are it is an EVAP code issue.