LY6 Transmission has a Leak - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**aotte1** · 10-19-2014, 02:22 PM

My 1986, C10, SB, with the LY6 transmission is leaking trans fluid, I think around the speedometer cable outlet. Need to clean and dry it all up to confirm. If so can you replace the seal from the outside? Easy or hard? Who sells the seal too?

That what I get for cleaning all the year junk off it.

Les

**aotte1** · 10-20-2014, 10:43 PM

Clean the area around speedo cable today, will see what it looks like tomorrow. The connection of the speedo cable to the trans is a little different for this trans.

Les

GRADYS Performance · 10-21-2014, 10:44 AM

All the speedometer seals can be changed from outside the transmission.

10-19-2014, 02:22 PM	#1
aotte1 Registered User Join Date: Oct 2013 Location: lousiville Ky Posts: 2,645	LY6 Transmission has a Leak My 1986, C10, SB, with the LY6 transmission is leaking trans fluid, I think around the speedometer cable outlet. Need to clean and dry it all up to confirm. If so can you replace the seal from the outside? Easy or hard? Who sells the seal too? That what I get for cleaning all the year junk off it. Les

10-20-2014, 10:43 PM	#2
aotte1 Registered User Join Date: Oct 2013 Location: lousiville Ky Posts: 2,645	Re: LY6 Transmission has a Leak Clean the area around speedo cable today, will see what it looks like tomorrow. The connection of the speedo cable to the trans is a little different for this trans. Les

10-21-2014, 10:44 AM	#3
GRADYS Performance Registered User Join Date: Dec 2013 Location: Columbus, Oh Posts: 367	Re: LY6 Transmission has a Leak All the speedometer seals can be changed from outside the transmission.



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