My 2000 5.3 won't run after putting it in my 2005 truck

Asked by Jdond2 May 02, 2018 at 02:45 PM about the 2005 GMC Sierra 1500 SLE Extended Cab LB

Question type: Maintenance & Repair

I just had a man put a 2000 GMC 5.3 engine in my
2005 Gmc truck both trucks ran just before the
swap. Now the 2000 5.3 will not run in the 2005
truck any suggestions please?

1 Answer
27,720

oilyspill answered 6 years ago

Did you get the computer from donor vehicle? If the computer in the 05 isn't compatible with the 2000 engine, it won't work. I don't know if computer in 05 is compatible with 2000 engine? Also, make sure all engine grounds are hooked up. Just my opinion.

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