Ok here goes..
92 K1500, 350 engine, 7004R transmission.
I've noticed a unusual noise coming from what I think is the
transmission at cold start-up. Its almost sounds to me like
a pump noise, some type of unusual whine / metal rattle noise.
Only hear at initial cold start and or if the truck sits for a long
period of time and only when you first start it. Sounds lasts
for just a few seconds and then diminishes.
I also hear a "whine" at the various shift points.
Transmission fluid is good.
Another thing, which I believe is related.
At normal driving acceleration truck will down-shift
and operate "normally". If you are going around
70mph on the hwy and floor the throttle (WOT) the truck
will act like its downshifting but the rpms will red-line if you
are not careful and the transmission feels as if its in neutral.
At WOT going down the hwy from a roll at 70mph the truck wants to rev
to the redline and it feels like the truck is in neutral.
I'm assuming that the transmission is about to go up in smoke??
I've made no changes to the transmission or to the engine, I did
recently change the gearing , but I don't see how this would cause my
Anyone dealt with a similar issue?
This only happened recently, and I only noticed it one day
when I was out driving around. I usually get in some WOT
runs to just see what its running like.
I have to say that the transmission feels like its totally slipping at
WOT from a kick down at roughly 70mph. If you let off the throttle
then truck pulls normally and shifts normally, also downshifts
If I have to replace the transmission any suggestions on an
aftermarket Trans or OEM rebuild. B&M, TCI,
I've seen the above guys web sites but I have no knowledge of their
noticed this place for "good wrench transmissions"
I don't abuse the truck, but I've been known to give it a little
gas every now and then. Truck is serviced at regular intervals
including Trans fluid and filter.