2500HD Range Shift Infibited issue
#1
2500HD Range Shift Infibited issue
I have a 2004 Silverado 2500HD with the Allison transmission.Recently I get a message on the dash when I shift from park to reverse or drive. Itsays Range Shift Inhibited. I looked at the manual and it just says put it back in park or nuetral and try again. I called a local transmission company who is highly regarded and they have never heard of this. I called 2 Chevy dealers and neither one of them have heard of this. Does anyone know what this is?
#2
RE: 2500HD Range Shift Infibited issue
Looks like your gonna need a new one from what I have found, but it should be covered under warranty.
http://www.gm-trucks.com/forums/inde...t=#entry158361
http://www.gm-trucks.com/forums/inde...t=#entry158361
#3
RE: 2500HD Range Shift Infibited issue
I have that same tranny and after two days that I bought the truck I had to return in to the dealer to replace something in the tranny. I don't know if this is related but maybe it could help.
#4
RE: 2500HD Range Shift Infibited issue
I have finally been told by the third dealer I called that it is clusters. They told me this is a known problem.. Why nota recall? It sucks that you have to get stuck someplace and find this out.
#5
RE: 2500HD Range Shift Infibited issue
this is 4wd?...clusters can do this,but a re-program of the cluster would fix it,as its a software issue IF its the cluster
it could begetting a bad speed sensor reading and prohibiting a shift,but there should be some trouble codes in the TCM
any other symptoms at all?..or just the message?
if it is a cluster,a re-program may nail it/ ..gm is buying some 03-04 clusters,...how many miles on this?
it could begetting a bad speed sensor reading and prohibiting a shift,but there should be some trouble codes in the TCM
any other symptoms at all?..or just the message?
if it is a cluster,a re-program may nail it/ ..gm is buying some 03-04 clusters,...how many miles on this?
#7
RE: 2500HD Range Shift Infibited issue
Once moving everything is OK. When you get the message of course nothing happens. The other day I had it 2-3 times before I could move. It is 4 wheel drive with a bullydog downloader installed. I have taken it back to stock, but same issue.
#10
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Last edited by jerseymike68; 02-16-2010 at 02:16 PM.
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10-29-2010 11:58 AM