AZFX4 - Now that you're talking to Bill and Cody, I'll stay out of it. I like Bill's explanation. But, can you tell us - do they actually test anything on your model year truck besides plugging into the OBD port? For instance, do they take your gas cap off and attach it to a vacuum port to see if it's alright? Do they put a sniffer into the tailpipe?
As I recall, on my 2005 truck, I use the OBD port only line and the ONLY thing they do is read the data at the port. I seem to remember that line is for 2001 and up trucks (but I may have the year wrong).
Knowing this information may help Bill.
Oh, one more thing. I don't think you will be able to read the P1000 code if it's set using the monochrome Gryphon. At least I never did. I DO see it (when it's set) with the CTS programmer though and I assume the CS would show it too.
- Jack
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