trans clicking while shifting into park

noshowjones · 10-02-2008, 04:29 AM

When i come to a complete stop and shift my trans into park sometimes it will make a clicking sound like a normal trans makes if you shift into park while its still moving this has happened several times in the last couple of months and does not sound good
please help
thanks

**BigRedChevy** · 10-02-2008, 09:23 AM

Mine does it all the time. Does it also do it when in reverse backing up? Mine as done it since new and continued to do it after the re-build.

noshowjones · 10-03-2008, 05:56 AM

fliud is fine no other issues just come to a complete stop and shift trans into park it will make a clicking sound that probably last 2 or 3 seconds really loud does not do it all the time just ever now and then
sounds like that cant be good
thanks

ufreak · 10-07-2008, 10:06 PM

mine has done since it was new as well. and i do a lot of stop and go at work its in and out of park alot, its lasted 40,000 miles so far.

noshowjones · 10-12-2008, 02:52 PM

i can also make it do this in 4 wheel low shifting from drive to park park to drive

LetzRock · 10-12-2008, 05:17 PM

Quote:

Originally Posted by noshowjones

i can also make it do this in 4 wheel low shifting from drive to park park to drive

My stock 2004.5 does the same thing in low lock.

D.W. · 10-12-2008, 06:00 PM

It could be your locking powl getting worn, it the locking mechanism in the allison that puts the truck in park and stops it from moving.

**Durallymax** · 10-12-2008, 07:00 PM

In Low I think all of our trucks do it.

I would say its just getting worn.

It not always as bad as it sounds. Just run it till you dont have park

. Kidding but if you had a shop replace it it will be expensive.

Diesel Nut · 10-13-2008, 07:52 AM

If the park pawl is wearing you will know it. The park pawl on these transmissions is fairly large as are the notches it engages. Also, you have a spring wedged into the case to pull the park pawl back when the park rod disengages.

I don't really have an answer for the clicking other than maybe its all the solenoids in the vb releasing.

**bigdaddydiesel** · 10-13-2008, 08:58 AM

I have had 12 GM trucks since 2000 and all of them have this problem, not just with the Allison... I would also check the gear lube in the differentials, and in the transfer case, if they get low or have never been change and are dirty they can cause this too...JMHO