I wouldn't worry about it. If there was a miss, stumble, etc. you would have a check engine light on the dash. Did you do the crank relearn after installing the Westers PCM? If you think it's a problem, have the dealership check it.

 

Mine's always done it.

 

mine only started the shake after the 4l80e swap, my trnny guy said its in the convertor and not to worry so far so good 10k on swap,only does it 550-1050ish rpm then wreeeeeeeeeee RADIX GOES ZOOM ZOOM hehe radix best mod to my truck so far i hate the frikin power loss of the 80e 6.0 stroker here we come .

 

mine too, my f150 did it really bad

 

My 03 1500 hd has 135k on it now and has done it for as long as i have had the truck, about 20k, It really gets on my nerves but i am about to do some work on it and get it tuned so i hope it can tune out of the truck. I would be really interested to figure out what causes it though

 

Man this is an oldy (4 me). Factory sets idle too low. A good tune will eliminate most of it.....Unless you put a big 'ol nasty cam in there

 

yea i had to same problem. as for my truck... a couple bottles of fuel injector cleaner later... the problem was gone, and its stayed gone for about 10k miles and counting. i think i had an injector getting dirty and the problem only showed at idle.

 

i ran a big bottle of the lucas fuel treatment through my truck over about month and a half using about 5 ozs. per fill up instead of the 3 that they say use. No help still did it.

 

Mine does it....but only started since i did the cam/motor swap.My 5.3 would every now and then start kinda chop idleing.All stock motor but it would almost idle like it had a big ol cam.It would do it for like a second or two then stop and it only did it every so often.Not sure why it ever did that.

 

both my motors had the severe case of the shakes..