>>but I still have a nagging groan/vibration. It seems to be around TC
lockup, but I'm not convinced the two coincide. Most obvious around 60
MPH on the highway with light pressure on the gas... It's sort of a
groan/rumble with mild vibration. It seems to lessen as the truck warms
up. Worse in colder weather. Ideas?<<
hhmmm... time for all the questions they're not gonna' ask you at the
shop: in the afore mentioned tuneup, did you change the trans fluid and
diff fluids?
Does the vibration occur if you accelerate past 60 and are coasting
under no throttle?
Do your differentials ratchet for make noise when you take a tight turn?
Stock ride height?
When trying to pinpoint odd problems, I always tell people to start with
the cheapest and easiest stuff, then move up as budget persists =)
- miggity
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