[V8] Loss of Power Saga: Finally Pulled Codes

[Ryandfreise at aol.com]

That 00521 code has me stumped as well. I may have missed it but I did not 
see this code listed. So I would have to suggest clearing the codes and see if 
this one ever returns.

The 00529 the flow chart says there is a probable problem between the trans. 
control unit and the engine control unit. This is different from the typical 
engine speed sensor code that you would get if you pulled codes while it was 
not running (the one Jason is speaking of). The flow chart says to look at 
section D3-80 in the manual.

I would agree with Jason that if you haven't replaced the O2 sensor it's a 
good idea.

Ryan