2000 Silverado 1500 read mode 6??

[bryan george]

I've been having issues when I start my truck it'll run rough for couple minutes then smooth as butter, just had transmission rebuilt as well. I'm getting no CEL with my scan tool but my  mode 6 data has many errors but im having trouble diagnosing my trucks rough idle with  no codes and reading this mode 6 data, anyone familiar? i provided photos with my post- im struggling to diag. this can GM trucks team help me out? thanks in advance guys! (5.3 vortec v8 LS) also sometimes when its warm out even when at a stop light i feel the jitters from my engine very lightly

[CamGTP]

I have no idea what any of that data means, it gives nothing to go on. If this is like a phone app for a scan tool it doesn't seem very good.

 

A handheld scanner with better data and worded explanations would be far better for figuring stuff out.

 

 

Easy things to check are spark plugs and wires. Check fuel pressure key on engine off and then while running, make sure that is within factory spec. Check for broken exhaust manifold bolts and that your EGR is not leaking or gummed up/sticking. Clean the throttle body and IAC sensor too, if those are all dirty it will idle rough.

[bryan george]

Blue driver mode 6 data, i will try those and update if they work, thank you!