Not a blazer but has same 4.3l vortec engine. And I need help. Fuel issue I suspect. I've uploaded a screen recording of live data stream along with the graphing. It doesn't make much sense to ne but I'm sure it will to yall. Thanks in advance for the help I receive. Starting around 3 mins of video you will see graphing

https://photos.app.goo.gl/8NWfmgnQedGHjLicA

 

Base engine on a 2010 Silverado is a 4.8 liter V8. Do you mean a 2001? There is no link here to any screen recording. Also it would be very useful for you to state exactly what your problem is - not just what area you think the issue lies in.

If we are going to help you, you will need to post much different info than you have in the past, and then you need to do/give us exactly what we ask for. Posting screen records of lists of all data sensors like in the past just isn't working - it is pretty useless info. Also, contrary to popular opinion, OBD2 codes and scanners don't tell you what part is bad so you can simply replace it. OBD2 codes only lead to a factory diagnostic chart.

ID the phone app that you are using in previous posts. I don't recognize it. If it is something that anyone knows about here, maybe they can help teach you how to use it.

If not, get either Torque Pro or Car Diagnostic Pro and I will be happy to try to help you. They are both Android apps that run on Android phones/tablets. $10 for either if you already have the Bluetooth OBD2 device.

 

Is that app Dash Command? If so I can help you work with it.

 

https://photos.app.goo.gl/8NWfmgnQedGHjLicA

 

You simply aren't listening to me or answering any of my questions. I'm over and out of this thread!

 

I didn't even see your replies ..to answer your question I have thinkdiag scan tool and app. As far as what the truck is doing..it's sputtering. Has a misfire cyl 1 and 5. No power on acceleration. Previous to this you can hear popping in intake on startup.

 

Not familiar with ThinkDiag but for $85 it should read GM Enhanced Powertrain PIDs. You will have to figure out how to run it.

First thing to check on a Blazer is cam sensor retard with the scanner and then fuel pressure, both running pressure and how fast it leaks down when engine is shut off. Also check condition of spark plugs on the cylinders that misfire. Please check those things and report with photos.

I am still assuming this is a 2001 not a 2010. Details, details

 

No this is a 2010 chevy silverado c1500 with a 4.3L vortec engine...same as the blazer I had previously. Will get spark plugs out and report back with photos as directed.

 

OK - I'll be damned - I see where they use the LU3 in the 2010 Silverado. My service manual info goes to 2009, but should be the same as 2010.

 

There are some significant differences however, one of which is that the cam sensor has been moved from the distributor to the front cover. In fact the distributor is gone altogether and the plug wires plug directly into the coil. So checking cam sensor retard will not serve the same diagnostic function as on the earlier Blazer. But we can try to diagnose this one