No Overdrive/4th gear...need help

[AZGTP]

2000 GTP with 115k miles, I just bought it. It had no overdirve and a tranny shutter. I did a service on the trans. Filter and fluid plus a lil Lucas and still no OD. It shifts under power just fine, Anyone have an idea as to what might be going on?

[TheOtherNick]

If you would have tried a search, you would have found that your 4th clutch hub is stripped, you need a new trans or a rebuild.

[Mjcanton]

Yeah, you bought a car without 4th, you will need a new tranny for sure.

[Bedwards]

Any DTC codes? Some codes inhibit 4th gear, doesn't necessarily mean your 4th clutch shaft is ruined.

[BillBoost37]

Yes..and being in AridZona.. you may have a couple local buddies of mine near you. One does work on transmissions. To swap out a 4th hub shaft (if that's the issue) isn't bad with the trans in the car.

[BoostenGTP]

You don't need a whole new trans... just the 4th gear clutch shaft. Pick up a Hardened one from ZZP for like $80, then gaskets, then some fluid and swap out the shaft, can be done with the trans still in the car..

My 4th has been gone for over a year now.. i just drive it like that haha.

[Bedwards]

You don't need a whole new trans... just the 4th gear clutch shaft. Pick up a Hardened one from ZZP for like $80, then gaskets, then some fluid and swap out the shaft, can be done with the trans still in the car..

My 4th has been gone for over a year now.. i just drive it like that haha.

Gas mileage FTL. Plus your transmission is getting pretty hot running those high RPMs. I'd just get it fixed!

[AZGTP]

No DTC codes, computer is telling the trans to shift and the lockout is working properly but yet no 4th gear. Looks like i will be giving it a new 4th gear. Thanks you all for your input as to I am new to the GTP group. Only one regret; I DIDNT BUY ONE EARLIER!!! even without 4th gear, a very fun car to drive!

[BillBoost37]

FWIW ZZP is very overpriced on the shaft.

TEP has them cheaper and sometimes you can find a name your price on ebay. I've gotten a couple for $45 shipped.

[tayl5645]

Also if your not comfortable doing the work yourlsef let Bill know hes very reputable on here and can hook you up with one of his buddies

[BillBoost37]

Also if your not comfortable doing the work yourlsef let Bill know hes very reputable on here and can hook you up with one of his buddies

Already tossed him a pm with how to get in touch with a good guy in Phoenix.

[coreygnar]

to the op, the guy in az is good, you can trust him with your car..

[BillBoost37]

Corey...next time you see Bob, tell him Majestic Teal is a girlie color.

Yeah..Thomas is the man.

[coreygnar]

i will, but he barely comes around though, ive only met him once

[tayl5645]

Majestic teal?? Sounds kinda ehhh

[BillBoost37]

Last off topic post. It's a color Gm used for 1 year on bonneville, and I think GP's too. In sun it'll look green, dusk...and it's purple then teal .. it's a cool color. But busting a buddies chops is always in order.