Help - another transmission leak - The 1947 - Present Chevrolet & GMC Truck Message Board Network

4tiresngas · 12-31-2005, 10:31 PM

Okay, I have been trying to clean up the underside for a little while now. I finally figured out where the transmission was leaking from. It leaks from around the dip stick. I got a brand new dip stick w/ new o-ring and installed it. It still leaks there.

So, I need to figure out where to get the grommet that is actually in the transmission housing where the dip stick goes in. Anybody know where I can get a new one..preferably online, since it's 45 miles to the nearest part store.

Thanks for any help.

**truckdude239** · 12-31-2005, 10:36 PM

umm last time i had that problem i use blue rtv and gooped the o ring in it and soved my problem just neve could get the dip stick tube back out

Ron · 12-31-2005, 11:44 PM

I just replaced my dip stick seal (the one in the tranny). Their are 2 types, the old style (mine) is just an "O" ring. The new style is a rubber grommet. This fixed that leak however, I soon found that the shifter shaft is leaking also.

4tiresngas · 12-31-2005, 11:52 PM

Ron, where did you find the dip stick seal at?

Longhorn Man · 01-01-2006, 01:35 AM

Dan, Barstow doesn't have any parts stores?
I almost re-upped to go there.

Kinda wish I did.
kinda glad I didn't.

4tiresngas · 01-01-2006, 01:54 AM

Longhorn Man, it is 35 miles to get to I-15 and then it's another 10 miles to get to the AutoZone and Kragen. I try to only go when I need several things...that's also where the closest Wal-mart (not even a Super Wal-Mart). Gas just cost too much. Believe me, I use the internet for almost everything out here.

Longhorn Man · 01-01-2006, 01:59 AM

I remember Ft Irwin road being long...but didn't remember it being that long.
I guess there isn't much on post for that kind of stuff either huh.
Man, that's a 1/2 tank of gas just to get to the parts store.

4tiresngas · 01-01-2006, 02:04 AM

Fort Irwin road is long and in disrepair...the State of California should be ashamed. Five people have died on that road just since October.

Tx Firefighter · 01-01-2006, 09:30 AM

Do you have an aftermarket chrome dipstick and tube?

I've never been able to keep them from leaking. Swapping in a GM factory dipstick and tube always fixes the problem.

Ron · 01-01-2006, 12:14 PM

Quote:

Originally Posted by 4tiresngas

Ron, where did you find the dip stick seal at?

Got it at the parts store for $1.00. I bought both types as I wasn't sure which seal I had. I still have the grommet seal on the shelf. If this is the type you need let me know and I'll send it to you. Ron (retired MSGT)

FRENCHBLUE72 · 01-01-2006, 05:31 PM

I just installed 2 lakr dip sticks in 2 th350 trannys one in my wheeling truck and one in my 454 th400 2wd they do recomend to use some rtv and they are great no leaks as of yet and my wheeling truck has been flopped many times since the install..

70c10 · 01-02-2006, 10:27 AM

These are the GM part numbers for the dipstick seals in case anybody is interested:
Transmission filler tube seal (top hat later style) - 1259475 (350 turbo)
Transmission filler tube seal (O-ring earlier style) - 6264902 (350 turbo)

Ron · 01-02-2006, 12:49 PM

Quote:

Originally Posted by 70c10

These are the GM part numbers for the dipstick seals in case anybody is interested:
Transmission filler tube seal (top hat later style) - 1259475 (350 turbo)
Transmission filler tube seal (O-ring earlier style) - 6264902 (350 turbo)

Got the part # for the shift rod seal and the modulator? Thanks

12-31-2005, 10:31 PM	#1
4tiresngas An American Soldier Join Date: Feb 2005 Location: Grumolo D' Abadessee, Italy Posts: 503	Help - another transmission leak Okay, I have been trying to clean up the underside for a little while now. I finally figured out where the transmission was leaking from. It leaks from around the dip stick. I got a brand new dip stick w/ new o-ring and installed it. It still leaks there. So, I need to figure out where to get the grommet that is actually in the transmission housing where the dip stick goes in. Anybody know where I can get a new one..preferably online, since it's 45 miles to the nearest part store. Thanks for any help. __________________ Dan dan.brue@us.army.mil

12-31-2005, 10:36 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: Help - another transmission leak umm last time i had that problem i use blue rtv and gooped the o ring in it and soved my problem just neve could get the dip stick tube back out __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-31-2005, 11:44 PM	#3
Ron Registered User Join Date: Feb 2000 Location: Zillah Wa. USA Posts: 394	Re: Help - another transmission leak I just replaced my dip stick seal (the one in the tranny). Their are 2 types, the old style (mine) is just an "O" ring. The new style is a rubber grommet. This fixed that leak however, I soon found that the shifter shaft is leaking also. __________________ '69 SWB '76 International "Terra" "Hooked on holiday beer"

12-31-2005, 11:52 PM	#4
4tiresngas An American Soldier Join Date: Feb 2005 Location: Grumolo D' Abadessee, Italy Posts: 503	Re: Help - another transmission leak Ron, where did you find the dip stick seal at? __________________ Dan dan.brue@us.army.mil

01-01-2006, 01:35 AM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Help - another transmission leak Dan, Barstow doesn't have any parts stores? I almost re-upped to go there. Kinda wish I did. kinda glad I didn't.

01-01-2006, 01:54 AM	#6
4tiresngas An American Soldier Join Date: Feb 2005 Location: Grumolo D' Abadessee, Italy Posts: 503	Re: Help - another transmission leak Longhorn Man, it is 35 miles to get to I-15 and then it's another 10 miles to get to the AutoZone and Kragen. I try to only go when I need several things...that's also where the closest Wal-mart (not even a Super Wal-Mart). Gas just cost too much. Believe me, I use the internet for almost everything out here. __________________ Dan dan.brue@us.army.mil

01-01-2006, 01:59 AM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Help - another transmission leak I remember Ft Irwin road being long...but didn't remember it being that long. I guess there isn't much on post for that kind of stuff either huh. Man, that's a 1/2 tank of gas just to get to the parts store.

01-01-2006, 02:04 AM	#8
4tiresngas An American Soldier Join Date: Feb 2005 Location: Grumolo D' Abadessee, Italy Posts: 503	Re: Help - another transmission leak Fort Irwin road is long and in disrepair...the State of California should be ashamed. Five people have died on that road just since October. __________________ Dan dan.brue@us.army.mil

01-01-2006, 09:30 AM	#9
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Help - another transmission leak Do you have an aftermarket chrome dipstick and tube? I've never been able to keep them from leaking. Swapping in a GM factory dipstick and tube always fixes the problem. __________________ I'm on the Instagram- @Gearhead_Kevin

01-01-2006, 05:31 PM	#11
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Re: Help - another transmission leak I just installed 2 lakr dip sticks in 2 th350 trannys one in my wheeling truck and one in my 454 th400 2wd they do recomend to use some rtv and they are great no leaks as of yet and my wheeling truck has been flopped many times since the install.. Attached Images __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

01-02-2006, 10:27 AM	#12
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,856	Re: Help - another transmission leak These are the GM part numbers for the dipstick seals in case anybody is interested: Transmission filler tube seal (top hat later style) - 1259475 (350 turbo) Transmission filler tube seal (O-ring earlier style) - 6264902 (350 turbo) __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads



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