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  1. 6

    96 GMC sierra p0172 and P0300 and flashing ses

    Yeah, have seen these failures over the years. Have yet to double check the new wires . Will hopefully have some time to mess with this weekend
  2. 6

    96 GMC sierra p0172 and P0300 and flashing ses

    Yes, o2 sensors new. And a fresh, complete tune. Intakes done 2 years ago. We gotta get a real scanner on it and look at misfire counts and data streams . Only showing rich on one bank. My guess is the spider injection, but I'm not sure failing ignition module would just cause rich on 1 Bank...
  3. 6

    96 GMC sierra p0172 and P0300 and flashing ses

    170k miles on original injectors. So I'm sure its way past time.
  4. 6

    96 GMC sierra p0172 and P0300 and flashing ses

    I was leaning toward bad injector as the fuel pressure is fine, volume is good as well. All 8 cylinders firing correctly. Unfortunately the real diagnostic tool is what we need . Thankfully, I think I know a guy. Thanks for reaching out.
  5. 6

    96 GMC sierra p0172 and P0300 and flashing ses

  6. 6

    96 GMC sierra p0172 and P0300 and flashing ses

    New tune and o2 sensors with a rough idle. No cats, and o2 cheater for downstream o2 sensors. Idle rough and super rich. No intake pcv leaks. Occasional flashing ses light vortec 5.7. Have seen some posts about relearn of crank sensor after tune up. Just wondering if anyone else has encountered...
  7. 6

    95 gmc hvac controller swap

    I have a good controller with pigtail #09378815 that i am wanting to swap into my 1995. cannot find proper diagram or pinouts to adapt newer controller to my 95 harness. I am sure someone has done this and can help. Thank you in advance!

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