new to the forum here, and looking for some help..well big time help...heres heres the deal..i have a 2000 chevy silverado 4.8...runs great..however 2 little things that for the past months has me going crazy...

1)acceleration of a dead stop is poor and i mean really poor. i let the foot down and i mean i push it all, and no joke takes about full second or 2 to even feel anytime of push on the truck. sort of like the timing is off. however no dtc's codes show up..only dtc code is p0463 wich is the fuel gauge indicator. ive been told it can be the knock sensors or even the torque converter

2) when on idle stop(like stop sign or red light) after a few seconds my truck starts shaking alot..and i mean alot...much like if im running out of fuel..but im good on that end with the fuel...i have to either shift to neutral or park for the shaking to stop, and when i even when i do, my rpms go up, like if im accelerationg...

now i dont know if they are related to one another, but i need some help guys..any feedback is greatly appreciated...

 

How many miles do you have? And when was the last tune-up.

 

Going on 200K already..had it for about 6 years and never had any issues with it..always did the normal oil changes, sparkplugs, cables oxygen sensor changes..to be honest since I got it did a tune up my first year with it, since then haven't done one. You honestly think it could be that?

 

yup. 5-6 years is way too long between tune-ups.

 

Do a tune-up, and go from there.

 

also, trans fluid and filter.

 

Thanx guys..ill make sure I do a tune up this week and take it from there...as for the trans fuild and filter, can't be that...trans fluid and filter were changed 2 chirstmas ago...

 

Still ain't a bad idea to do it again.

 

I cant post a new thread and dont know why so I am jumping on this one in hopes of getting a reply.I am new to this so bear with me. I have a 05 silverado that threw a o2 code. it was for the left bank upstream sensor. To be sure it was the sensor i went to switch them side to side and bugered up the threads on the right one and had to replace both. i replaced them with two bosch sensors from autozone and lost 2-3 mpg. are bosch junk or did i just get a bad one? only have about 60000 miles on truck. any help would be great. thanks.