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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: original77k10 on August 26, 2008, 07:57:47 pm

Title: Transmission leaks only on reverse/ '77 cheyenne k10, 350-th350 4X4
Post by: original77k10 on August 26, 2008, 07:57:47 pm

    Hi Guys. First at all, thanks for taking the time to help me out, this site is awesome!!

   I got a '77 cheyenne k10 4X4 with a 350 and a th350 tranny, I bought it last year, and I love it.
 I replaced the water pump and the fan clutch like a week ago after she left me strand it the middle of the freeway (I'm from AZ, 112 degrees in the shadow) I pull over on time before the water pump broke loose and drain all the cooling/antifreeze. The installation was pretty good test no leaks or over heating, I pull out of my driveway to test drive it it was very nice no more vibration truck was fine, when I comeback I saw marks of oil in my driveway, I thought it was antifreeze but when I look closer It was transmission fluids, then I look under my truck and the oil was still dripping. I start checking where it was coming from and It was coming out from the top of the transmission towards the back of the truck but ONLY when the truck was turn on and in reverse, It looked like a waterfall. This is so weird I check the whole site and nobody seems to have the same problem.  The truck have no transmission problems prior to this, never leaked or slip neither the engine. I was thinking maybe the towing truck did something I don't know please help me, All your help will be highly appreciate!!!! 
                 
                                           Thanks
             
Title: Re: Transmission leaks only on reverse/ '77 cheyenne k10, 350-th350 4X4
Post by: original77k10 on August 26, 2008, 08:00:32 pm


   Sorry I'm new to this site, I have not idea what it's the options for?
Title: Re: Transmission leaks only on reverse/ '77 cheyenne k10, 350-th350 4X4
Post by: VileZambonie on August 26, 2008, 08:37:25 pm
Welcome to the site. When you want to start a new topic click on new topic not new poll.

If fluid is coming out of the top of the trans near the vent tube check the fluid level. Make sure it isn't overfull.
Title: Re: Transmission leaks only on reverse/ '77 cheyenne k10, 350-th350 4X4
Post by: original77k10 on August 27, 2008, 01:50:19 pm


    Checked, and with all the fluid leaked still leak like a waterfall...
Title: Re: Transmission leaks only on reverse/ '77 cheyenne k10, 350-th350 4X4
Post by: VileZambonie on August 27, 2008, 04:03:25 pm
Quote from: original77k10 on August 27, 2008, 01:50:19 pm


    Checked, and with all the fluid leaked still leak like a waterfall...

You'll have to put a little more effort into your posts in order to get any useful help. I'm not even sure what you are saying. You checked the fluid and it's not overfull?
Title: Re: Transmission leaks only on reverse/ '77 cheyenne k10, 350-th350 4X4
Post by: original77k10 on August 27, 2008, 06:14:19 pm


    Sorry, Yes I checked and is not overfull!!!