[greggreg]

Ahh, good. Let's talk about this GM Drive Cycle. Short of having your own personal test track, how can any normal person ever do the GM Drive Cycle "exactly"? First of all you need to cold start and run for 2.5 minutes and then accelerate to 55 for 3 minutes. Now, unless I have my truck sitting COLD (i.e. overnight) on the side of the highway (not likely!!), how can I do this? Then I need to drive for 3 minutes at 55 and then coast to 20 without touching my brakes. So at "exactly" 3 minutes down the road I need a very long exit ramp - Not likely! (Note: if I try to just coast down to 20 while still on the highway I'm going to get killed!) Let's get real!!! "Normal" driving should reset all codes eventually. I could drive 10 years and not "coast from 55 to 20 without using my brakes"!!! So, since I haven't done the Drive Cycyle exactly, I will NEVER reset my codes??? This doesn't make sense. While the "exact" drive cycle may reset the code, there has to be some other criteria which will also reset the codes, otherwise "normal" driving would not reset the codes! Any thoughts?