ok this grinding noise is happening when i go into third gear. it will pass the synchro and as soon as it does it grinds. if i put it in third the synchro does its job and holds the gear in but it grinds. no other gear does this, only third. HELP!!!??? could someone tell me if they had the same problem and what they did to fix it or someone tell me what the problem is??

Are you sure it is staying in gear? Sounds like it is grinding the gear. It could be the tips of the shift fork are messed up, or the gear is grinded down. Either way tranny needs to be opened.



FU Tuning

yes it is staying in gear. it goes right into gear. no force is needed to make it go into gear. but when it passes the synchro it grinds. HELP! i hat having to go all the way to 4th from 2nd

Brett Basham wrote:yes it is staying in gear. it goes right into gear. no force is needed to make it go into gear. but when it passes the synchro it grinds. HELP! i hat having to go all the way to 4th from 2nd

when it goes into gear and you let out on the clutch is it in gear?



FU Tuning

yes it is in gear. it doesnt come out of the syncro or anything. i can put it in. let the clutch out, and drive it. it just grinds when it goes in.

Brett Basham wrote:yes it is in gear. it doesnt come out of the syncro or anything. i can put it in. let the clutch out, and drive it. it just grinds when it goes in.

That is your syncro's. Sorry to say, but it is.



FU Tuning

yea thats what i was thinking it was. hoping it wasnt but thinking it was. thanks john i appreciate your help dude.

Brett Basham wrote:yea thats what i was thinking it was. hoping it wasnt but thinking it was. thanks john i appreciate your help dude.

No problem. Is the car under warranty?



FU Tuning

no it actually just got out of warranty about 2k miles ago..sucks a**!!!

My 06' hhr shift fork was messed up. It would grind going into third, and leaving third only. No problem any other gear. Mine would not grind if you double clutch like an old truck. In my trans is was a "plastic" fork, the dealer replaced it with a bronze fork.

I never had a problem with it popping out of gear. It was just grinding going in and out of gear passed the synco's.



PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO

well mine doesnt grind coming out of third. just going into third. and so john is it tough to swap those bell housings or is it fairly simple?

-MD- LD9 wrote:My 06' hhr shift fork was messed up. It would grind going into third, and leaving third only. No problem any other gear. Mine would not grind if you double clutch like an old truck. In my trans is was a "plastic" fork, the dealer replaced it with a bronze fork.

I never had a problem with it popping out of gear. It was just grinding going in and out of gear passed the synco's.

The tips of the forks are covered with a nylon sheath....... your saying GM has updated forks with bronze tips? That would be music to my ears, since that alone is the weakest part of the Getrag Transmission.





SPD RCR Z - '02 Z24 420whp
SLO GOAT - '04 GTO 305whp
W41 BOI - '78 Buick Opel Isuzu W41 Swap

SpeedRacerZ wrote:

-MD- LD9 wrote:My 06' hhr shift fork was messed up. It would grind going into third, and leaving third only. No problem any other gear. Mine would not grind if you double clutch like an old truck. In my trans is was a "plastic" fork, the dealer replaced it with a bronze fork.

I never had a problem with it popping out of gear. It was just grinding going in and out of gear passed the synco's.

The tips of the forks are covered with a nylon sheath....... your saying GM has updated forks with bronze tips? That would be music to my ears, since that alone is the weakest part of the Getrag Transmission.

Yeah find out about this Speed if you could. I would take a cvouple set myself.



FU Tuning

there are bulitens on this, all 05 F23's are suposed to have this, also there is a buliten about geting a thrust washer\spring inside of them to get rid of gear rattle.....

ill get the part #'s from the bulliten.

Chris<- GM parts


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

Well, for gear rattle GM ID# 1337141
It says to install wave springs\washers between blocker ring in 3rd and 4th.

I looked for a good hour for the shift forks, there are bulletins on them, but nothing i was looking for, just says to replace them....

so I looked on my parts listing, ALL F23's get the same PN's, that makes me think there all the old nylon style.... I will car part-tec tomorrow and learn what’s up!

Chris



'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

John, Chris or I will let you know what we find out...... I would love to see a set of these in my hands




SPD RCR Z - '02 Z24 420whp
SLO GOAT - '04 GTO 305whp
W41 BOI - '78 Buick Opel Isuzu W41 Swap

I too would love to upgrade mine for some better shift action. Keep us posted on those numbers.


"If you aren't shifting, then you certainly aren't driving!"

silvercav02 wrote:I too would love to upgrade mine for some better shift action. Keep us posted on those numbers.

these tips would not really give better shift action. It would be more to keep from break.bending the factory ones.



FU Tuning