2012 Silverado Problem

[JayR89]

My 2012 Silverado 1500 stutters/rumbles/vibrates when cruising at any speed 50 or under, sometimes doing 75 as well. When I accerlate it'll stop. Owner had tranny redone a little over a year ago and I just got the torque converter replaced. Any help?

[Jworks]

Have the universal joints been checked?

 

[dna9656]

I don't think it's the tranny, so far as I know trannys don't exhibit those kinds of symptoms, what you describe IMHO is an engine symptom. There are a lot of could be's; ignition coil, injectors, spark plug wires, spark plugs, etc. Post more info.

If you haven't replaced the plugs and wires and don't know when they were last changed I'd start there. Get a spark tester and see if all the coils are firing. Remember, a plug that doesn't fire doesn't mean the plug is so bad it can't fire, it could be the wire, test the plug with another wire that's known to be good. If the plug still doesn't fire you can suspect the coil, the wiring between the coil and the computer...etc.

Edited February 20, 2022 by dna9656

[Brenden Burnham]

Agree with dna9656 do the basics here if you have never done then just replace all the plugs and wires.  But easy enough checking the tranny fluid easy to detect problem if is discolored and or has an abnormal smell to it.