Help -th400 slipping in D engages in 1&2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rou · 11-06-2013, 09:18 PM

The drivetrain sat for about 2 years during our resto. Got her running last month and ran great but leaks at the pan. I kept adding tranny fluid until I could change the pan seal, but two days ago it stopped engaging in Drive. It did work in 1 and 2. I changed the seal/filter and refilled fluid, still same problem. Slips badly in Drive but will catch in 1 or 2. Before I go to the transmission guy tomorrow, I thought I would go to you guys for suggestions.

Thanks, Rou

11-06-2013, 09:18 PM	#1
rou I can see the finish line! Join Date: Apr 2010 Location: York County, Maine Posts: 88	Help -th400 slipping in D engages in 1&2 The drivetrain sat for about 2 years during our resto. Got her running last month and ran great but leaks at the pan. I kept adding tranny fluid until I could change the pan seal, but two days ago it stopped engaging in Drive. It did work in 1 and 2. I changed the seal/filter and refilled fluid, still same problem. Slips badly in Drive but will catch in 1 or 2. Before I go to the transmission guy tomorrow, I thought I would go to you guys for suggestions. Thanks, Rou __________________ 1971 C20 402BB In the process of a rebuild now Our first Build - '71 C20 LWB Last edited by rou; 11-06-2013 at 09:59 PM.



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