Need help starting my 04 1500 4.8 turbo Silverado P59 PCM for first time, trying to learn how to tune. I've tried starting it, but seems as if its not getting fuel at all, it has good fuel pressure and spark. New FIC 525cc injectors with data installed. Any help would be appreciated. Just want to hear it run. Truck has been sitting in the driveway for a long time. lol I'll post file.
Last edited by 04Silverado4.8S366; 04-07-2023 at 04:22 PM.
What MAP sensor did you buy?
And I'd just turn off the VATS too, just so that isn't ever a problem.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
ACDelco 19418810 2bar map sensorOriginally Posted by 5FDP
This should get you going. Sometimes you just have to adjust the MAF curve so that it'll run for a second or two and actually fail the sensor.
4-4-23 step 1 tune 2bar speed desity kw mod 2.hpt
Thank you Kevin, I really appreciate that. The truck started right up and idled pretty good. It was nice to hear it run after all I've been going thru. Not trying to make a sob story, but was diagnosed with vocal cord cancer last year, went thru radation treatments and had lost interest in the turbo truck project. After hearing it run, its got me excited again. Next step is learning what things I need to data log.
Last edited by 04Silverado4.8S366; 04-07-2023 at 05:59 PM.
I'm glad the tune helped out. I'm sorry to hear about your diagnosis. Let me know if I can help you get the truck dialed in.
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