December 13, 2004I put a 400 out of a 1986 GMC 4x4 in my truck. we took it apart and the clutches were like new so we just put it back and we put in a shift kit. I got the truck running but the transmission only wants to go forward no matter what gear it is in except park. Any ideas what could be the problem?
Forums : General Tech Questions : Th-400 auto tranny problems (1497 Views)
December 17, 2004I posted a reply to this 2 days ago .... Don't know what happened ...... Here it is again .... I think there's a problem with the shift kit installation .... Either a 'little steel ball' is missing, or in the wrong spot, or when you put the valve body back together something got misaligned, or the internal linkage was hooked up incorrectly .....
February 27, 2006More than likely you got the reverde band in wrong, or the pidton that actuates it. I have also seen the pin for the band bent!!\
March 1, 2006Once again someone posting to a thread that's 2 years old. Any reason for it? I think if the guy with the trans problem still has it now, he's hopeless .....
October 27, 2011
Once again someone posting to a thread that`s 2 years old. Any reason for it?
Yeah sometimes bouncing these old threads up can help someone else with the same problem. Make it easier to find.
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