CLASS RACER FORUM - View Single Post - GM 4l80e trans vibration in O/D when towing

Dave Noll · 02-04-2013, 12:01 AM

I saw a local shop sell a customer a trans rebuild for the same issue your having. When the customer got it back it, did the same thing. In his case the engine was missing under load. Common issue's would be carbon tracked plug, plug boot, weak injector if it has 8, coil output if it has 8, or plug wire etc.

02-04-2013, 12:01 AM	#2
Dave Noll Senior Member Join Date: Nov 2007 Location: Div. 6, Eastern, WA Posts: 710 Likes: 2,681 Liked 240 Times in 112 Posts	Re: GM 4l80e trans vibration in O/D when towing I saw a local shop sell a customer a trans rebuild for the same issue your having. When the customer got it back it, did the same thing. In his case the engine was missing under load. Common issue's would be carbon tracked plug, plug boot, weak injector if it has 8, coil output if it has 8, or plug wire etc. __________________ Dave Noll, EF/S ,?/SA 6526