Sennin
Well-Known Member
- Messages
- 453
- Location
- South Africa
Sennin, if you downgrade it may help. You should check with your local dealer to make sure you have the latest GM flash on your PCM as well. If it hasn't been updated since 08 that might be some of the trouble as well.
Sorry I have not yet called SC on your behalf. Did you join their web forum? They are great at helping folks on there (me included)!
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Hi Hans3T,
Well my Hummer was manufactured mid 2009, so I would assume the software on the PCM would be post 2008. but will have it updated just in case with my next service.
I have joined their web forum, but its now going on two months and my account hasn't been activated yet, its really frustrating this side.
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