2002 bonneville SLE- is there something I could check before bringing to service station?Thanx

have you taken it to your local auto parts store yet? they read the codes for free.. do this and then come back and post your codes then we can help also go to the profile link and put you year and make in your signature so once the topic gets bigger everyone will know what car were dealing with and also your location in case we have a member near you

I'd go to advance rather than autozone. Advance has a scanner that they hook up to their computer and then give you a printout of it. I hate having to scurry for a piece of paper to write down the code that the AZ scanner gives me! Also, I've found that on average, Advance has more knowledgeble people (that may just be in my area, but idk...)

Plus, you can always look up the code they give you in our TECHINFO section above. To make it easier for you, I've put the link to your codes here:

2000-2005 DTC (PCM Trouble codes) listing