2017 Duramax

Hambone

Always learning
Jan 24, 2016
571
0
16
Florida
Local dealer is seeing push rod failures lately. Anyone else hearing this?
Hmm interesting
I wonder why?
Is it bending, marring the ends what...
I know there’s injector issues but not to common
The trans lines seem to be popping up more and more
Radio units acting funny
And funky trans sift patterns lol say that 5 times fast
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
18,104
387
83
Phoenix Az
out of the dozen or so trucks i know of, none have had issues to date. mileage ranges from 10k to 60k thus far. sure thats a small sampled compared to whats out there. i have to make a dealer stop today, ill quiz them and the other by my place.
 

Hambone

Always learning
Jan 24, 2016
571
0
16
Florida
Well my rear main seal appears to be leaking a little bit more now
Going to take it to the dealer and hopefully they will fix it
Also noticed the front main is leaking
And for some reason GM doesn’t coat their front differentials anymore... mine looks like it has seen a winter or to in Michigan but only every driven in FL
Gear box is the same way so only thing I can think of is they are cheap or using a type of low carbon weathering steel??? Thoughts and comments appreciated :)



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zakkb787

<that’s not me...
Sep 29, 2014
2,322
46
48
Granite Falls NC
I just saw Wehrli is offering a s300 kit for l5ps now and are working on a cp3 swap as well. Supposedly they’re maxing out the hp4 at 7-800hp.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
18,104
387
83
Phoenix Az
I just saw Wehrli is offering a s300 kit for l5ps now and are working on a cp3 swap as well. Supposedly they’re maxing out the hp4 at 7-800hp.
800 seems to be the max. i would buy an s400 kit before the s300 kit for these trucks. you cant compare to them to the 16 and older with the amount of air they move.
 

2004LB7

Well-known member
Dec 15, 2010
3,370
222
63
Norcal
I thought the HP4 delivered more fuel then a CP3. Even perhaps a 10mm stroker CP3. Why would they swap it out?
 

zakkb787

<that’s not me...
Sep 29, 2014
2,322
46
48
Granite Falls NC
Ahh didn’t know that Evan. I just saw them post about the s300 kit today. To me a s300 is pointless. They were talking about how high drive pressures were when they pushed them. I agree a 400 frame is better for these trucks.

04 I’m guessing because it has its limits too. More fuel in stock form but not enough after mods.
 

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