Last post on Dec 09, 2002 at 7:50 PM
You are in the Pickups - Archived Discussions
What is this discussion about?
Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, Truck
Dec 07, 2002 (12:11 pm)
"I can have it exibit the proplem, put it in neutral, then shut the engine off and it still vibrates."
You're saying that it vibrates with the motor off? Exactly what speed are you rolling at?
"It is at about 10 MPH intervals.
Is your truck 2wd or 4wd? Extended cab? Are the vibrations in the seat of the pant or steering? And to get three of them? OMG what did you do to deserve this?
I had one that shaked. After replacing the rack and pinion, it doesn't vibrate. Just wondering what your story is all about.
Dec 07, 2002 (4:06 pm)
I must say a fullsize pickup truck and a VW jetta will ride very differently and i hope that they do
Dec 07, 2002 (5:29 pm)
Dec 07, 2002 (6:21 pm)
oh yea why did you go from a fullsize pickup to a small (i couldnt think of any other way to describe it sorry) car.
It kinda boggles my mind how i hear all the time about people who drive cars and they decided to buy a pickup then complain about the ride.
Dec 07, 2002 (7:40 pm)
How often does that happen? lmao
Dec 07, 2002 (9:24 pm)
Not flaming just trying to get to the bottom of the story all the facts ya know
Dec 09, 2002 (7:50 pm)
In a few decades of working on vehicles here are a few things I've found.
I hope they help someone.
Vibrations can come from a number of sources, tires being the obvious first thing to look at.
Drive shafts on longer trucks often are in two pieces, the yokes on both ends of the part with the slip joint must be in the same plane. also look at the shaft from the rear of the truck. The center support bearing on most can be shifted side to side, the shafts should both be parallel to the center line of the truck.
On models with rack and pinnion steering, have someone move the steering wheel back and forth with the power steering (stay off to the side so they cannot run you over if they put it in gear), if the rack housing seems to move more than just barely noticably, aftermarket thermo-plastic mounting bushings may help.
Try raising and/or lowering the tire pressure five pounds.
For back and forth shimmy of the steering wheel, a steering damper for trucks without one, or extra heavy duty one to replace stock, often works wonders.
This SHOULD not be a problem with trucks as built, but dealers change tire sizes, and a tire too wide for the rim will make you hate the ride and handling.
Check for loose bolts on shocks and suspension parts.
Check the ball joints for slop. With any mass produced product a defective one can slip through.
Motor mounts? Rear trans mount?
Jack up the truck, loosen the lugs, and use a torque wrench to tighten the lugs in stages to the proper torque. This is especially effective in correcting vibrations in Tacomas with big tires. their wheels do not center correctly if one lug is tightened before the rest are snugged up.
If your truck is empty, the back end will bounce around if the tire pressure is sent for maximum rated load. For running empty setting the rear to the same pressure as the front often works well, even if the door sticker says 30 pounds more in rear.(Load range "E" tires on 3/4 or 1 tons).