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Truck Just Randomly Shuts Off

iamhistory

By iamhistory
in Ask A GM Technician

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iamhistory Enthusiast

iamhistory

Posted
Posted

I am posting this for my brother as he has a Dodge full size so I apologize for not sticking to the GM theme. I thought the problem may be answered by a tech b/c how different can a truck issues be even though the manufacturers differ?

 

By the way, I myself am a die hard Silverado owner and am currently looking at the new models. Mine is a 97 with 140,000 on it and still going strong but I am jonesing for a crew cab and some more modern creature comforts. The 97 will stay on the farm as a work truck. It's been an everyday driver and a dependable friend.

 

Now the question: My brother just had a new transmission put in his full size Dodge. He also had a new plow installed, during which the installers blew out his computer by wiring the plow incorrectly and had to do $1100 worth of repairs to fix the problem (they admitted it and covered the costs).

 

The truck ran fine, except for the transmission needing to be replaced, before he got the plow done. Now, it just randomly shuts off even if he is driving down the road. When he lets it sit for a while, it will turn back on. If it does not sit long enough and he tries to turn it over, it does nothing.

 

There is a code that flashes on the dash and the digital odometer flashes as well. the code says: no bu 5

When that code is not there and the odometer is not flashing the truck will start and run for awhile. If the code is there, the truck will not start.

 

Any input on this problem? We are thinking either the transmission isn't right and is getting too hot, or there is still a computer problem from the plow installation errors.

Nytemare Senior Enthusiast

Nytemare

Posted
Posted

Sounds like something security related. By does nothing you mean no crank or anything...or do you mean it just cranks and wont start?

 

I would be checking all the connections to the plow and all the grounds as a starting place.

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