My 98 is having a slight shudder problem which has led me to use Mode $06 to try to find out the culprit. What I have found is that Test ID $41 Component 12 and Test ID $52 are both out of range, as well as cylinder 8 causing the shudder. I believe that 41 is related to the egr, but I cant find any explanation as to what 52 is.

 

Fix the misfire and ignore the rest, they're probably red herrings (poorly implemented software, usually).

 

Alright, that sounds like a good plan. Thanks for the reply!