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Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 17144
Experience:  15 years GM master tech
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2005 Duramax Diesel 2500 Silverado pickup. Bought new. No

Customer Question

2005 Duramax Diesel 2500 Silverado pickup. Bought new. No modifications, 110,000 miles. Random loss of power, goes into limp mode? First started November of 2014. To Chevy dealer numerous times. Throws no codes, no warning lights come on. Only occurs at speed over 60, stays at 2000 rpms. Never has happened in "town" driving at lower speeds. Happens in cold or hot weather, pulling a trailer or not. Can go several weeks without problem, than happens. Replaced wiring harness and I believe fuel sensor with no good result, fuel filters replaced numerous times. Possible solutions?
Submitted: 2 years ago.
Category: Chevy
Expert:  Gary replied 2 years ago.

I am sorry your having this problem

do you know if there are any codes current or history in the computer ?

Customer: replied 2 years ago.
No codes current or in history, this is one puzzling aspect of the problem!
Expert:  Gary replied 2 years ago.

can you inspect the fuel lines in the are of the transmission and see if any of the rubber part of the fuel line looked kinked or where they possibly could be collapsing ?

we have had issues with these fuel lines collapsing in that area causing an intermittent issue like that