Truck shaking when on gas sounds like exhaust help!!!

[iEnding]

Didn't get a chance Today but I'll be gettin around to it Tomorrow first thing in the Morning... Hope for the best!

 

[Vortec Lover]

 

[iEnding]

Well didn't find anything out of the ordinary. All fluids are good and checked front end.
Bout some shudder fix and I guess that's not the problem either.
It drives fine just a usual with a little shake but other than that I guess I'll be continuing to drive it until I look deeper into it.

If anyone has an idea to check please let me know!

 

[94Sierra4x4]

Any driveshaft play?
Fairly sure the DS has a balance weight on it, is it still there?
Check u-joints

You'd probably be able to feel these not just at 50-55 but, worth checking.

 

[iEnding]

Where else are the u joints located other than the 4 in the back?

And I haven't unbolted the driveshaft out yet but when I went to grab it and move it around it didn't have ANY play

 

[94Sierra4x4]

Where else are the u joints located other than the 4 in the back?

And I haven't unbolted the driveshaft out yet but when I went to grab it and move it around it didn't have ANY play

One in the front drive shaft one in the rear as far as I know.

 

[iEnding]

I have some Shudder fix in her now so hopefully it'll set and take the shudder away

 

[iEnding]

had a crazy idea... The shaking all started with a puff puff from my exhaust and I have had a bad 02 sensor for a while but could it be it just completely burnt up and needs to be replaced? Could that be where my shaking is coming from? Maybe to much back pressure?

 

[iEnding]

I've also noticed my gas mileage has dropped

 

[iEnding]

Alright the conclusion: A bad wire and plug... the wire was split and one plug wasn't even firing. with a few other nasty plugs in there.