Question about Chevrolet Silverado 1500

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I have a problem with a viberation and acts like a drive shaft out of balance,have had a new drive shaft installed and now does it at a lower speed on a 2014 silverado 1500 on a 5.3 eng. any help

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  • Chevrolet Master
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Did you have new u-joints installed CORRECTLY... the drive line balance is tricky... try rotating the drive shaft 180*.. ALSO - you can rotate the drive shaft one (transmission) spline at a time (you have to remove the drive shaft each time) - (with the rear wheels OFF the ground so you can rotate the rear end a "spline" each time..its TIME consuming!!

Was the "new" driveshaft a NEW one or a used one?... take it back to the company that did the work, take the boss for a ride and show him what his "new" driveshaft is causing.

Posted on Aug 11, 2017

Testimonial: "Had new driveshaft & joints installed by Brooks Motors, new shaft is worse than the one that came on truck, truck only has 31,000 miles"


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Posted on Nov 04, 2009

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3 things that i know of that could cause vibration noise that starts/stops at speeds. 1- The tires, either they need balancing, or they got used up irregularly and "bounce" on the pavement. 2- drive shafts are damaged (dented, waved), dirty, or need balancing. It happens from time to time that the weights the solder on the shafts to balance them at the factory just fall off due to rotation and rust and all, and just a good clump of baked on dirt can also unbalance the shafts. 3- U-Joints that need replacing don't let the shafts move freely and tend to make them vibrate. If that is the problem, you can replace the u-joints with new ones using a few tools to remove the snap rings and a hammer or vice to press the u-joints out of their sockets. Also i do believe the front end on a liberty is made basically like a FWD and has 2 half shafts to drive the wheels, and the joints in those can also be done for and need replacing, although half shafts don't have u-joints and aren't really serviceable so if the problem is there you will need to replace the whole half shaft. Hope this helps.

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This can be a little tricky to do depending on what you have for tools and how good you are at working on things but the joint is held in with C clips and is a loose press fit into the yoke there are single and dobble cardan yokes the single are easyer to do because you olny need to press two caps out instead all four . So remove the drive shaft it has 4 bolts make SURE YOU MARK THE ALINGMENT OF THE SHAFT . Drive shafts are balanced like tires and will viberate if not realinged correctly. Remove the shaft from the vehicle it will slide out of the back of the transmission you will loose some trany oil out the back so make sure you refill it. If you have a vise clamp the shaft into it use wood between the shaft and the jaws so not to dent the shaft. Remove the C clpis with a small screw driver you get new ones with the new joint so if they are distroyed its not a problem.If you don't have a vise you can do this on the ground you just need a vary clean area to work on put down some clean cardboard and a 4x4 block of wood to rest the shaft on. With the clips out take a hammer and a scocket that is close to the size of the cap and drive it out if its stubbern heat the out side of the yoke with a propane torch this will expand the metal on the yoke and the cap will move in and the other side will move out and thing will fall apart . The trickyest part is putting the new one in . You need to remove the caps from the new joint . They should have greese in them already with neddle bearings that will fall out if your not careful i like to put more greese in them to act as kind of a glue to hold them in place . Slide the new caps into the yoke from the out side and carefuly fit the new joint into the caps from the inside and press the caps into the joint by hand as far as you can . Then take a C clamp that fits the cap size and finish pressing in to the stop piont . Install the new C clips make sure the caps are pressed in enough so the new clips snap into the groove in the yoke to hold them in . The new U joint may or may not have a greese fitting if it dose install it before you install the new U joint but do not try to greese it until the new joint is installed and the clips are in .Then reinstall the shaft making sure that it goes back in the same atitude it came out from to mantain the the correct balance and tighten the bolts that hold it to the carrier and you should be good for 70 or 80 thousand miles . Good luck

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1 Answer

Drive shaft bearings

Do you mean u joints because there is realy not a bearing in the driveshaft so to speak But the u joints have neddle bearings in the yoke You need to unbolt the drive shaft from the rear cairrer then pull it back out of the transmission tail stock it will laek some oil you can take a plastic bag and a couple of rubber bands and seal that up Then take the shaft out from under the vehicle to some place you can work on it like a bench but when you remove the shaft make sure you mark it its weighted and needs to go back in the same way or the balance will be off and it will viberate at certion speeds There small c clips that need to be removed from the out side of the bearing caps then you can press or drive the oid yokes out a little head helps something propane torch you don,t have to worry about the old ones When there out this is the tricky part you need to remove two of the caps from the new joint oppiste sides there pregreesed and the bearings will stay inside of them slide one cap into the drive shaft then slide the u joint yoke into the cap from the inside and gentle puessit on the yoke then do the same with the other side of the cap on the oppiste side of the driveshaft you can use a large c clamp to press them into pisition install the new clips and gresse if the unit has a gresse fitting and you will save a lot of money if you can do this Then install but make sure you put in the same side up as you took it out

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1 Answer

Hiwich timing mark I used to time the balancer shaft on a 99 honda accord with a 2.3L

To Install:
NOTE: Clean balancer belt drive pulley, timing belt pulleys and upper/lower timing cover prior to belt installation.

  1. Set timing belt drive pulley to TDC by aligning dimple on pulley with dimple on oil pump. honda-03-23-3426.gif

  2. Set camshaft pulley to TDC so that "UP" mark is at top and grooves align with top of cylinder head. Timing belt installation honda-03-23-3549.gif

  3. Starting with driver pulley, install timing belt in a counterclockwise sequence.
  4. Loosen and ten retighten adjusting nut.
  5. Install balancer belt drive pulley. NOTE: Inspect rubber seal on lower cover and replace as necessary.
  6. Install lower cover.
  7. Install crankshaft pulley and bolt.
  8. Rotate crankshaft pulley counterclockwise several times to seat belt.
  9. Loosen adjusting nut 1 turn.
  10. Rotate crankshaft counterclockwise 3 teeth on camshaft pulley.
  11. Tighten adjusting nut to 33 ft lb (44 Nm). honda-03-23-3542.gif

  12. Turn crankshaft pulley until TDC is achieved. honda-03-23-3426.gif

  13. Ensure that camshaft pulley "UP" mark is at top and grooves align with top of cylinder head.
  14. Remove crankshaft pulley and lower cover.
  15. Rotate crankshaft to TDC again and lock timing belt adjuster arm with a 6 mm timing cover bolt.
  16. Loosen adjuster nut 1 turn and ensure that belt tensioner freely moves.
  17. Push tensioner up and tighten adjusting nut. Balancer shaft alignment honda-03-23-3556.gif

  18. Remove bolt and washer from maintenance hole.
  19. Using a 6 X 100 mm bolt, scribe a mark 2.9 in (74 mm) from end.
  20. Insert bolt into maintenance hole and hole in balancer shaft.
  21. Install bolt up to scribed line. Balancer shaft alignment honda-03-23-3557.gif

  22. Align groove on balancer shaft with pointer on oil pump housing.
  23. Install balancer belt and loosen adjusting nut 1 turn to tension.
  24. Retighten bolt. Balancer shaft alignment honda-03-23-3556.gif

  25. Remove bolt from maintenance hole and install bolt and washer. Tighten to 22 ft lb (29 Nm).
  26. Reinstall crankshaft pulley.
  27. Loosen adjusting nut 1 turn.
  28. Rotate crankshaft pulley counterclockwise 1 turn and tighten adjusting nut.
  29. Remove bolt from timing belt adjuster arm. NOTE: Inspect rubber seal on lower cover and replace as necessary.
  30. Remove crankshaft pulley.
  31. Install lower cover.
  32. Install seal at adjusting nut. NOTE: Crankshaft pulley, bolt and washer must be cleaned prior to installation.
  33. Lubricate crankshaft pulley bolt between head and washer and bolt threads with clean engine oil. honda-03-23-3537.gif

    Do not use impact wrench to perform following step.
  34. Install crankshaft pulley and tighten bolt using special tools to 181 ft lb (245 Nm).
  35. Install dipstick/tube assembly.
  36. Install upper cover. Tighten bolts to 9 ft lb (12 Nm).
  37. Install cylinder head cover.
  38. Install alternator bracket and alternator.
  39. Install power steering pump belt and alternator belt. Upper bracket installation honda-03-23-3420.gif

  40. Install upper bracket and tighten fasteners in proper numbered sequence.
  41. Install stop.
  42. Install battery and enter radio anti-theft code.
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