Duramax Diesels Forum Truck of the Week
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Old 12-30-2017, 06:45 PM
Carlajay Carlajay is offline
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Question jump cables mishap

Hi, I'm new and i need advice..

I have a 07 silverado hd 2500 duramax 6.6 lit.
The weather has been cold in nj and i was having a hard time starting it.

So i had it jump started, when they connected the cables to their truck they put them on wrong, but they were connected correctly on my side..
Anyway now the speedometer does not work, the rpms are 3 and it doesn't upshift in drive.. Did this cause transmission damage?
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Old 12-30-2017, 06:50 PM
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Possibly fried ECM and TCM.
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Old 12-30-2017, 06:59 PM
Carlajay Carlajay is offline
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Okay !thank you
I have another silverado that needs a transmission around the same year .can it be swapped out .
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Old 12-30-2017, 07:11 PM
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Before you get too carried away, check all the fuses. It may be as simple as that.
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Old 12-30-2017, 07:21 PM
Carlajay Carlajay is offline
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Thank you
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Old 12-30-2017, 08:40 PM
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Quote:
Originally Posted by ChrisPerry View Post
Before you get too carried away, check all the fuses. It may be as simple as that.
This is where i would start as well. Thats why i said possible.
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Trucks Name: Consistantly Inconsistant!

06 LBZ CCSB
Built motor

Team Hole in the Piston "RIP" 10/21/11
2011 NHRDA Ennis, Tx Sportsmen Champion
2011 NHRDA Sportsmen World Champion
2014 TS Performance 12.0 Index
New ride - 07 3500 Duramax Van
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Old 12-31-2017, 07:55 PM
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Quote:
Originally Posted by Carlajay View Post
Okay !thank you
I have another silverado that needs a transmission around the same year .can it be swapped out .
If you mean swap the trans out in the event your ECM/TCM were fried, a new transmission will not be necessary.

My apologies if I am not understanding your question though.
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