Looking at a 16 Denali low miles cp4

whatisgoingonguys · June 1, 2019

Hey what is up guys i am looking at a used 1 owner 2016 sierra denali 6.6 duramax with 16k miles on the odometer for $52k.

Upon quick research i am worried about the cp4 and have read of people installing lift pumps like a kennedy or other brands( not saying go get a kennedy)

how worried would you be about the cp4?

is there anything you would extensively look over before you purchase?

I am new to diesel and I live in florida so a full def/egr block delete whatever isnt out of the question.

I am NOT looking for a race car. i am looking for reliability and dependability and some power.

I dont need to be running around 250hp tune lol

it is all stock as it sits on the dealer lot. also the price on cp3 greatly varies i see one for under 1000 and the next is over 6000?

Edited June 1, 2019 by whatisgoingonguys

CRApex · June 1, 2019

It would be fine if left in stock form and you could be assured of good clean fuel. That said, a lift pump would give you piece of mind. (Or find a CP3 ) GM replaced the CP4 on the L5P and added a lift pump to the system if that tells you anything.

whatisgoingonguys · June 1, 2019

so the cp4 is absolute trash lol

no i cannot be assured of clean fuel as i do not know the previous owner, its at a Ferd dealer

CRApex · June 2, 2019

I wouldn’t say it absolute trash but if you’re doing mods and plan to keep it for a while it is certainly an item of concern.

whatisgoingonguys · June 2, 2019

off topic BUT a friend of mine has a 17 F250 from what ive read they have a cp4 as well. he runs a 250 tune all the time, floors it everywhere, dogs the shit out of it. deleted. soft. ppei. another with a 17 f250 with compound turbo running cp4. I brought up cp4 and both didnt care at all that they were running it.

i have some dumb friends huh lol