What did you do to your Sierra/Silvy today? - Page 4275 - Chevy and GMC Duramax Diesel Forum
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post #42741 of 43517 (permalink) Old 05-16-2019, 06:15 PM
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What you need is more miles on the truck so that the transmission can adapt. If you would like to drop it by my house and leave it for a few months I'll take care of the problem for you.

Alternatively you could drive it hard and make it adapt. For some of these there is a fast learn mode that the dealer can put it in. In that mode it adapts faster than it normally would.
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post #42742 of 43517 (permalink) Old 05-16-2019, 09:04 PM
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Quote:
Originally Posted by Highmaster View Post
Two months old, 1285 miles on it! Left it sit, can't stand the jerky Allison that my dealer says is normal!


2019? Iím at 8200 and itís not gotten any better. Drives me nuts. Tow haul helps a ton. Dealer told me same damn thing. I call bullshit


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post #42743 of 43517 (permalink) Old 05-17-2019, 06:03 AM
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2019? Iím at 8200 and itís not gotten any better. Drives me nuts. Tow haul helps a ton. Dealer told me same damn thing. I call bullshit


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Brock, Scott has built trans for the L5P's

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post #42744 of 43517 (permalink) Old 05-17-2019, 08:09 AM
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Ordered some parts yesterday to delete my stock fuel filter head since it's showing signs of a very slow leak.
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post #42745 of 43517 (permalink) Old 05-17-2019, 08:17 AM
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What did you do to your Sierra/Silvy today?

Quote:
Originally Posted by SoCalMike View Post
Ordered some parts yesterday to delete my stock fuel filter head since it's showing signs of a very slow leak.


hooked mine up directly to the cp3 while doing the conversion.


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post #42746 of 43517 (permalink) Old 05-17-2019, 08:55 AM
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Ran tune 5 on the ol smokey knockin LBZ for about 80 mile this morning. Forgot how much I like instant boost
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post #42747 of 43517 (permalink) Old 05-17-2019, 08:58 AM
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Originally Posted by LML6600DMAX View Post
hooked mine up directly to the cp3 while doing the conversion.


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I'm planning to remove the filter head and hoses. Make a loop with new hose. I bought a 180į tube fitting too to see if I can use it.

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post #42748 of 43517 (permalink) Old 05-18-2019, 09:02 AM
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Quote:
Originally Posted by D_R_C View Post
That inlet turbo cooling hose is actually 7/16” ID hose, 3/8” will work but you’ll have to stretch it over the fittings.
I found using soapy water helps.
Also consider changing the turbo outlet cooling hoses, one is a 90* 7/16” molded hose on top of the engine another I uses a straight 7/16” ID hose located around the water pump area.
Both the straight 7/16 ID hose and the 7/16” 90* hose are available at GM.
At least having the proper 7/16” ID 90* hose would be more important.
I found one, on top of the engine leading from the crossover pipe (and what is probably a thermostat) back to the turbo. It appears to be straight and about 6" long. I have to pull the resonator and disconnect the hot side intercooler pipe to get at both ends of it.

I did the Sinister EGR delete which provided a small "U" shaped hose to connect the outlet of the heater core to the pipe I thought went to the rear of the turbo. It used to go to the EGR cooler first but that part is in my shop.

There is other down near the WP?

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post #42749 of 43517 (permalink) Old 05-18-2019, 09:45 AM
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Originally Posted by 407driver View Post
There is other down near the WP?
The beginning of the coolant supply to the turbo, begins at #16 pipe @ the WP.
That small tube in the middle of #16 pipe is where the 4" in length rubber hose (crossover) attaches.

With the front off, when replacing the water pump, that #16 comes off and the WP comes with 3 seals, #20 being one. #17 does not (you'll need one of those if you do your WP).

Easily replaced when doing the WP....not so much in trying to reach (or even see) thru and below everything on the engine front, with everything in place.
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post #42750 of 43517 (permalink) Old 05-18-2019, 11:57 AM
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lmm turbo outlet coolant hoses
#9 is what Iím referring to.
The inlet youíll need to remove the resonator which you already know.
On the inlet if you use 3/8Ē make sure you coat the line and nipple with plenary of soapy water.
Make you line long enough to slide all the way towards the turbo, then connect it and slide on the nipple from the upper radiator hose.

To get to #9 remove that 4Ē 90* elbow from your airbox to the turbo.
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