SES Problem with my 2006 Pontiac G6
V6   
Check engine light
GM tech = MW, JK
question = I was driving in traffic today and my check engine light came on. My car kicks  
  back quite a bit but not all of the time. There were no symptoms leading up to this and
the   car has not acted up since the check engine light has come on. Is it a problem that
I can fix?  Is it only a computer issue? It may be time for the timing belt to be changed?







MW:
Todays GM vehicles use many sensor, switches, solenoids, and other  
electrical components to control or monitor every aspect of the engine.
From controlling the fuel and ignition systems, to monitoring the emissions.
A problem in any of these systems, or subsystems, can cause the check  
engine light to come on.

The first step in any diagnosis of the check engine light is to get the  
computer (PCM or ECM)
scanned for codes. Any time this warning comes  
on, a code is stored in the computer memory along with many data  
parameters that were present at the time of the fault.

By what you describe, i would have to guess the engine is misfiring. Possible spark plug,
wire, injector problem. If the above mileage is correct, this would be under warranty. So
take to any GM dealer for a scan.
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