Injectors

[Doublebase]

10 hours ago, Mark Frazier said:

I’ve had my truck back for three weeks after getting four injectors replaced I still felt the miss after about a week now it’s in the shop again the other four injectors are bad I think there should be a recallI’ve had my truck back for three weeks after getting four injectors replaced I still felt the miss after about a week now it’s in the shop again the other four injectors are bad I think there should be a recall

That's a shame that you have to go through that, hopefully it was under warranty for you.

 

I started having some random misfire issues when I owned mine, but the event seemed to really happen mostly when under load going up a hill. I couldn't really ever figure out what it was...it wasn't the plug or coil, I figured it was the injector...and when I drove with a scan tool hooked up to it watching the data display, it did appear as if all the cylinders would have random misfire events, and it also appeared that fuel trim levels were in pretty severe negative range for the first ten miles of driving or so. (meaning fuel needed to be taken away). I have since read on this site that random misfires are common on these trucks (probably I'm guessing from the injectors) and honestly most probably don't even notice it happening. So I think you're right, there is an issue with their injectors - and I think it'll be a cold day in hell before GM does something about it.

[Mark Frazier]

54 minutes ago, Doublebase said:

That's a shame that you have to go through that, hopefully it was under warranty for you.

 

I started having some random misfire issues when I owned mine, but the event seemed to really happen mostly when under load going up a hill. I couldn't really ever figure out what it was...it wasn't the plug or coil, I figured it was the injector...and when I drove with a scan tool hooked up to it watching the data display, it did appear as if all the cylinders would have random misfire events, and it also appeared that fuel trim levels were in pretty severe negative range for the first ten miles of driving or so. (meaning fuel needed to be taken away). I have since read on this site that random misfires are common on these trucks (probably I'm guessing from the injectors) and honestly most probably don't even notice it happening. So I think you're right, there is an issue with their injectors - and I think it'll be a cold day in hell before GM does something about it.

 

[Mark Frazier]

Yes your right they will not recall them thanks for your post

[spenpet]

I had to replace the #8 cylinder a while back, and just the other day i felt my truck was acting similar to what it was...but no engine light yet...I am going to tr the cleaner again...but if it is like last time, it will have minor misfires for a while...then the light will come on (cold rough idle) and then will pretty much go out...this seems like a pretty common problem...any write ups or acknowledgements from GM?  71k miles, this has been my worst GM truck out of the three new trucks i have bought...