2008 silverado v6 to 5.3


Asked by Mar 26, 2014 at 01:47 AM about the 2008 Chevrolet Silverado 1500 LT1

Question type: Maintenance & Repair

Hello, everyone hope yall haveing a good
day. I really need yalls help i recrntly just
got me a new single cab silverado 2008
single cab used guy never told me he swap
the engine i took it to the dealer shop found
out there it was swap i took it to the dealer
Chevrolet's monument because wheb im
driving out of no were the truck slows
downsays engine power reduced. Whe  i
turn it on it strugles but ive seen if u put the
key foward and back a few times turb on
better i took it to a tune shop they told me
there was something wrong with the fuel
pump it might still be the v6 pump it dont
throw enough gas to the motor theybsaid i
need a v8 one is it true i really dont wanna
waste any money for anything and will a v8
fuel pump fit the truck because it was a v6
o and wheb the key foward u can hear he
fuel pump making noise what do i do i really
need yalls help! Thank you!

4 Answers


It a single cab by the way thank you.


I'm confused. A single carburetor??? On a 2008??? Are you sure about that? Anyway, I'm sure that there is a difference in the fuel pumps. Call your local friendly parts store and ask them to check it out for you. But be sure to know if you have a carbonated engine or a fuel injected engine first. Big big difference.


Whoops.my bad. I mistook CAB for CARB. I'm old and need new glasses. BTW if you have an Advanced Auto Parts store near yo, Google Advanced Auto Parts coupons. You can order on line and save a lot and pick up your parts within an hour or less. I wish they had one here in the Philippines. It's a PIA getting parts sometimes.

Andrew Olsen

i would just have the fuel pressure tested. I looked at the specs for the pumps and they are different part numbers but the GPH is can pump is about the same. One has a max of 80gph and the v8 one has a max of 85 gph. Not a huge difference. Are you sure it was swapped? What is the 8th digit of your vin#

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