Little vibration, can't pinpoint
June 17th, 2017, 12:37 PM
#1
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Little vibration, can't pinpoint
Hi all, newbie with a question.
I have a 1998 Silverado 5.7L rwd w/90,000 mi(140k), I've had this vibration- starts up around 25mph/worst @ 40 and still there, but less noticable on the hway.....since I bought it used a year ago.
In attempts to resolve I've done the following: full rear brakes( it needed) full front brakes and new bearrings, New tires(balanced) rebuilt drive shaft(2 part) and balanced both pieces( new center bearring and u-joints.
Things are still the same. Also checked the rear axles in case of a bent one, both are good.
Vib is there weather I drive in other gears, in curves, in neutral acc. and deccel.
If anyone has experience with this and willing to share info, it would be great ...Next, tearring into the diffy( pinion bearring ?)
Thank you
G.
I have a 1998 Silverado 5.7L rwd w/90,000 mi(140k), I've had this vibration- starts up around 25mph/worst @ 40 and still there, but less noticable on the hway.....since I bought it used a year ago.
In attempts to resolve I've done the following: full rear brakes( it needed) full front brakes and new bearrings, New tires(balanced) rebuilt drive shaft(2 part) and balanced both pieces( new center bearring and u-joints.
Things are still the same. Also checked the rear axles in case of a bent one, both are good.
Vib is there weather I drive in other gears, in curves, in neutral acc. and deccel.
If anyone has experience with this and willing to share info, it would be great ...Next, tearring into the diffy( pinion bearring ?)
Thank you
G.
Last edited by Guiys427; June 17th, 2017 at 12:41 PM. Reason: typo
June 17th, 2017, 1:08 PM
#5
at this point you may want to consider using this app
the price you pay for the app probably will save the cost of diagnostic charges or shot gun diagnostics. a factory tool cost upwards of $5000
the price you pay for the app probably will save the cost of diagnostic charges or shot gun diagnostics. a factory tool cost upwards of $5000
June 17th, 2017, 2:44 PM
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Tk's Tech2, I will look into it.
In the meantime, it has been suggested to check the tranny mount( little soft and moves a bit) but not certain how much is too much, but fast and cheap to change.
Also, someone mentionned the extention shaft bushing. There again, not certain how much play is too much, also an easy R&R on the 4L60e.
G
In the meantime, it has been suggested to check the tranny mount( little soft and moves a bit) but not certain how much is too much, but fast and cheap to change.
Also, someone mentionned the extention shaft bushing. There again, not certain how much play is too much, also an easy R&R on the 4L60e.
G
June 19th, 2017, 4:45 PM
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UPDATE
After inspection, I found the original transmission support to be soft with a fair amount of oil and grease on it, decided it has given enough. Instaled a available replacement, result: vibs are still present at the same intensity @ 40mph but much WAY less noticable at higher speeds.(50mph+)
If this helps anyone think of something....let me know. Thk's for the imputs!
Tech2, I did look into that app. but finding it a little steep for my pocket at this time, for a one time use but thank you for the lead.
G
After inspection, I found the original transmission support to be soft with a fair amount of oil and grease on it, decided it has given enough. Instaled a available replacement, result: vibs are still present at the same intensity @ 40mph but much WAY less noticable at higher speeds.(50mph+)
If this helps anyone think of something....let me know. Thk's for the imputs!
Tech2, I did look into that app. but finding it a little steep for my pocket at this time, for a one time use but thank you for the lead.
G