@IHBD Thank you for sharing your time writing me this detailed reply. As has been said many times by other members, the fellowship and support here is invaluable and wonderful. I will begin schooling myself in Section 8D of the Factory Service Manual. I imagine The Manual will define what the different abbreviations are, e.g., CCM, PCM, SIR, etc. I will follow up a bit more after i have studied Section 8D. Other than the VSS not taking care of the "Check Gauges" light coming on at 75 mph, I'm fortunate in that I'm not throwing any codes. Otherwise, I've been methodically addressing minor issues, replacing fluids Other than the VSS, the only issue i have is the ECC doing what seems fairly typical for these older beauties, not shunting the air through its different channels. I've been researching the 'net and stumbled into Batee's wonderfully informative Youtubes, on troubleshooting and repairs for the HVAC Controller, Programmer and Blend Door Motor. I made up a thread under Technical where all these videos are in one post. I never thought i'd become a car guy at the age of damn near 73, but here i am. Thankfully i am in excellent health, and my body will do what my Corvette asks of me, and have 6 decades of mechanical experience restoring ancient, dead motorcycles, so my critical thinking for how i approach things will be helpful getting me moving forward in this new adventure. Again, thank you for your help, it is much appreciated.

 

@1985 Vette Thank you for sharing your time writing this detailed reply about the Mastertech scanner and providing the Ebay links to the scanner, adapter and card. I have purchased these 3 items. Initially, i will be following @IHBD 's suggestion to begin familiarizing myself with Section 8D of the FSB so i can begin learning the nomenclature, increase my understanding of where different components are located in my C4, what their functions are and most importantly address issues as any may come up. So far, having driven the car 1,500 miles since i purchased it September past, issues it came with are minimal and minor, so i think i got a good car even though it has 87,000 miles on it. Reading other member's threads and posts, i have no reason to believe that with attention and care, this car should last me a lifetime. For me, the C4 with the elegant simplicity of its exterior design, wraparound dashboard, how the cabin is laid out, the high frame rails, the comfortable sport seating, not to mention the 180' rotating headlights provides all that i could ever want in an at the least somewhat exotic luxury sports car. I'll check back in after i've received the scanner and parts. The other parts that come with the scanner which are non-specific to the Corvette, i'm certain i will have no use for in the future. I'd like to sell them to recoup a bit of my investment in the scanner. I'd appreciate your suggestions of how/where i can make them available to people who can use them. Again, thank you for your support. As i mentioned to IHBD, becoming a car guy, much less a Vette owner at this stage of my life is being made easier by the wonderful fellowship this forum offers.

 

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@IHBD Yes, thank you so much, no apology necessary, it's on me. i have to admit, getting started learning something new where there's acronyms, abbreviations, with unfamiliar information connected to concepts, processes and procedures i am unfamiliar with initially feels a bit overwhelming to my senses. I have learned the best way for me to learn is reading, videos when available, looking at what's being discussed and then setting up for what needs to be done. in my "other life" i am a therapist, so anything mechanical that i've been exposed to i have self-studied, being mentored and just doing it. So, thanks again! I look forward to learning from you and your participation in the community.