Allison transmissom malfunction

[TnMax]

My 2002 Sierra will not backup after it sits for a few days. Back in Feb 2006 the dealer replaced a spring in the transmisson. Now the problem has returned and the dealer told me he called GM and they said "the problem could not be fixed". Has anyone else had this problem?

[More Power]

Have a look at the following two threads to learn more.

http://www.thedieselpageforums.com/tdpforum/showthread.php?t=18566
http://www.thedieselpageforums.com/tdpforum/showthread.php?t=23419

You could also use the search link above to search for the keyword drainback.

Jim

[TnMax]

Thanks for the information. I'll talk to the dealer Monday.

TnMax