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grinding in 4-wheel

steve mauriello

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steve mauriello New Member

steve mauriello

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Have lots of probs..had loud grinding/vibration in 4-wheel so i went and had my front diff replaced had bad carrier

bearing also 1-month ago passenger wheel hub assembly was also replaced because of noise in two wheel drive ..after differentail is replaced noise still there in 4x4 but slightly different very annoying and almost a vibration is worse under load and when releasing gas pedal but can make it diisapear when just barely toucing gas and driving.this truck was used hard and im into it for $$ so i have to finish the fix ..anyone have any ideas,transfer case?? whats this about a new updated one piece drive shaft?? had the new nickel plated yoke done with good results so far all rotors and caliper brackets,tires due to vibration at just about any speed still has vibration and a rattle and vibration in the steering wheel even on smooth roads had new goodyears road force tested and balanced twice with still same vibration  ...im losing interest at this point but kind of stuck between a rock and a hard place ..oh ya intermittent rough idle in park or nuetral..too bad i like this truck so much..............

Shaners Senior Enthusiast

Shaners

Posted
Posted
Could we have some details on the truck???  Year, make, model, cab and bed size and motor size with an auto or manual tranny???
steve mauriello New Member

steve mauriello

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truck is a loaded 99" 1500 silverado 4x4 LT extended cab, 5.3 litre, heavy duty rally sport suspension package,tow,G80 lock differential, maroon metallic /pewter w/ oak interior..goodyear RT/S wranglers p265,K+N,poly sway bar bushings,liner,bushwacker flares,NR white face gauges,racer grille,wood dash kit,in process of installing 3"body lift,rear sway bar and custom bent exhuast..but really need to get the bugs out before i lose it for this rig.........
Shaners Senior Enthusiast

Shaners

Posted
Posted

The rattle vibration in the steering is in the steering shaft itself.  The dealer just fixed mine (for the second time).  The TSB states to fill it  or pack it full of grease and the put a special cork in there...  I didn't look at the TSB very close, but I did talk to the mechanic about it...  So far so good this time around...

 

As far as the 4x4 vibration...  I personally have never owned a 4x4 truck that didn't have a little vibration at highway speeds, especially on dry roads.

 

If yours is excessive, I would tend to think you have definatly isolated it to the front drive area of the truck.  Check your front drive shaft out closely for damage.  I don't know if these shafts are balanced but look for a sign of a missing weight...

 

You say the front diff has been replaced so if it isn't the drive shaft itself then I would think it's in the transfer case.

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