Hello Fellow Tuners,
I would like to apologize as I'm fairly new to the Tuning scene. I have a 2017 Silverado 4.3 4x4 with a 6l80 Trans that I just purchased. It supposedly has a Superchips tune in it. Long story short, engine/trans performance is HORRIBLE. I'm hoping it just a bad tune and therefore easily correctible. I don't have the original tuner, so no way to go back to stock tune and start fresh.
Behavior Summaries:
Slow acceleration will advance normal until I hit a spot in the accelerator and it jumps as if I increased throttle greatly for just a second the fall back down.
During normal driving when I get up to normal cruising speeds, it's like it just jumps through 4-5-6 shifts within 5 seconds and sounds/feels bogged down during cruising.
I am attaching the tune file I pulled and a scan file I pulled for review if anyone has time and can offer any guidance/advice. Like I said, I'm hoping these issues are correctable by tuning and I don't have any underlying mechanical issues.
Thanks in advance,
Kendal
2017Silverado4x4.hpl
2017SilveradoInitial.hpt