How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ron Z. Your Own Question
Ron Z.
Ron Z., - Pontiac Tech -
Category: Pontiac
Satisfied Customers: 18775
Experience:  18+yrs experience. State Inspector and Pontiac Diagnostics
Type Your Pontiac Question Here...
Ron Z. is online now
A new question is answered every 9 seconds

2000 Pontiac Grand Am, service engine soon light is on steady....

Resolved Question:

2000 Pontiac Grand Am, service engine soon light is on steady.... any troubleshooting suggestions before I head to the mechanic?
Submitted: 6 years ago.
Category: Pontiac
Expert:  Ron Z. replied 6 years ago.

When the Service Engine Soon light comes on, it's the on-board computers way of telling you it sees a problem in one of the monitored systems. If you are not experiencing drivability issues (surging, stalling, rough idle), then more than likely it is a problem in an emissions system. Unfortunately, there are litterally 100s of sensors monitored and to take a "guess" would just be inefficient and a waste of time and money. A good place to start is at your local parts store (ie. NAPA, AutoZone, Advanced). Most of these stores will read the "p-codes" from the on-board computer for Free in hopes of selling you the part/sensor you need to make the repair. Once you have this p-code, it will tell you which system is faulting, and usually which sensor/part is the culprit, and then you can more accurately begin a diagnostic and repair effort. If the people at AutoZone cannot help you to your satisfaction, you can take the p-code(s) here and any one of our Techs can tell you what it means, and give you advice on how to diagnose and repair the problem.

Ron Z. and other Pontiac Specialists are ready to help you