Aurora By Olds said:Powerglide, First of all, if the SES light is flashing, it is detecting a cylinder misfire.
This can be caused by either a bad plug wire, plug, fuel injector, or combination of the three. The best thing to do is pull the codes and see what is up.
Secondly, 72K is not too early to do a tune up. You'll probably find that it helps quite a bit, especially if the car has been babied most of its life.
If youre changing the plugs and wires, get a good set of wires, and use only ACdelco plugs. From my experience with the N*, anything else is a waste of time and money, however some claim to have used decent NGK something or others that worked fine as well.
By the way, changing the plugs and wires is a fairly simple DIY job. Take your time, and you should be fine.
alright...Ii fgured out how to get the codes.powerglide said:Can someone tell me how to get DTC codes from my 98 Deville?
JimD's method not the same for Devilles...I tried.