Dad's 07 classic Sierra having problems
 

His truck has a 6.6 Diesel engine and it randomly turns off and then he has to pump something to get it running again. What is going with the truck?
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Re: Dad's 07 classic Sierra having problems
 

Sounds like he is getting air in the fuel line. Is he pumping the prime pump at the fuel filter housing ? There is a vent screw that needs to be opened while doing so until the fuel comes out without air... then tighten the screw. It is common for the o-rings to wear out at the fuel lines causing air to be sucked in (I have been told this but never actually replaced them)

Re: Dad's 07 classic Sierra having problems
 

Yeah he has to pump it everytime. Anyways I'll check it out thank you for the information.

Re: Dad's 07 classic Sierra having problems
 

Rebuild the fuel filter head First! http://nicktane.com/osc/product_info...59fbb19a7cba4f

I'm guessing this is a GMT800 truck with an LBZ?

Re: Dad's 07 classic Sierra having problems
 

He's just going to buy another engine. The engine has the pump problem and the injectors don't work and the transmission gave out too, but that can be fixed.

Re: Dad's 07 classic Sierra having problems
 

This sounds very unlikely? The CP3, Injectors, & Trans failed????

Re: Dad's 07 classic Sierra having problems
 

Yes unless I heard wrong. However I know for sure that the injectors and the pump are no good. About the transmission whenever it shifted gear it hung back and the truck jerked forward suddenly every time, but i'll see what's going on.