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Reviewing TSB's for 1996

1151 Views 12 Replies 4 Participants Last post by  sootnsmoke
I was looking through TSB's for 96' and I found two uncorrected conditions on my 96' that match the TSB description exactly. My truck is all stock with 94k miles. Anyone have any more info on these two TSBs or info on thier technical/corrective action and verification?


Creaking noise from rear of vehicle.
The diagnosis involves the inspection of the rear leaf spring assembly to verify the appropriate
number of spring tip inserts are present. If tip inserts are broken or missing the repair procedure
is detailed in the TSB.



Droaning noise/vibration.
The symptom typically occurs at maximum load and is engine speed specific - 1900 rpm for 4x2
models, 1850 rpm for 4x4 models with the truck in fourth gear and the torque converter clutch
locked up. If the problem is identified, a repair procedure involving a revised propeller shaft with
a yoke weight damper is described.

94-’96 (BR)
With automatic
transmission and 5.9
Turbo Diesel engine.
Note: ‘96 2500 club
cab, 155 WB 4x4 with
heavy duty transfer
case built after 5/9/96
have the revised
propeller shaft.
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Look on ebay. I have seen TSB listed under factory service manual. You can also probably find them at the chrysler website that offers factory service manual.
Reading this you would see...

One person had the dreaded drone with one exhaust setup and eliminated it by changed the preload and hanger locations to stop the pipe from resonating and droning.

Clamp a piece of angle iron onto the straight pipe to change its weight and resonance to reduce and eliminate drone. Putting different lengths and weights may be required to find the sweet spot."

From TheDieselStop.Com Forums: Can I dampen my drone? Please!

""Do a search on "flex kits" and you may find your answer. My truck had a significant drone/resonance starting in the 1700 RPM range. After reading a couple of positive posts about installing a section of flexible exhaust I obtained a pre-made kit that consists of a 6" section of flex exhaust complete with the couplers and U bolts. I installed the kit last night and I am very pleased with the results. I cannot hear/feel the drone." (and) "The flex pipe eliminates about one third of the normal noise this truck makes" That makes sense as putting in a flexible pipe would change the resonance frequency of the exhaust system.

Another person glued lead sheet using liquid nails panel adhesive onto their roof. This was done because of drone using stacks. That helped the drone a lot. The roof can be a cause for excess noise in at least some cases.

Stock trucks are around 92-98 Db under load at 70 mph. (88-90db is where most say hearing damage starts) and this is more than enough to cause hearing damage over time."
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