Most Asked Questions. - Chevy and GMC Duramax Diesel Forum
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post #1 of 1 (permalink) Old 07-25-2009, 03:37 PM Thread Starter
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Join Date: Jan 2008
Location: Riverton,Kansas
Posts: 4,905
Most Asked Questions.

Here we have taken some of the most asked questions by new members and given the answers to them.

Q. My Truck is running bad, no power and is not shifting right?
A. When Was the last time you changed your fuel filter?

Q. How do I change My Fuel Filter?
A. Fuel filter write up Read this it will help you.

Q.How often do I need to change My Fuel Filter?
A. At least ever 5k

Q.Are vans awesome?
A. Yes, very.

Q. What oil should I use? and How much dose it hold?
A. What kind to use is up to you. I use Rotella 15-40. But Amsoil is another that many use.

Q. How much oil dose my Dmax hold?
A. It holds 10 qts.

Q. How do I know if my truck is an LB7, LLY, LBZ, LMM?
8th Vin #1-LB7
8th Vin #2-04.5-05 LLY
8th Vin #2-06 LLY 10th digit is a 6
8th vin #D-LBZ
8th vin #6-LMM

Q. How big of a tire can I get on my stock wheels with out rubbing?
A. 265's

Q. Is the Cognito leveling kit really worth it?
A. Yes!

PPE or Suncoast, Which is better?
A. This is up to you. Read up on them.

Q. What programmer is the best?

Q. What is the stock gear ratio?
A. 3.73

Q. Will 285's fit on my truck without a leveling kit? (this is for OBS)
A. Yes. Only thing you will need to do is shave the plastic trim on the front bumper. I suggest a small belt sander.

Q.Who makes the best exhaust?
A. Any one depending on your budget, as long as it is 4 or 5 inch and mandrel bent. you want stainless in wet environments but in the desert aluminized is fine

Q.What kind of turbo do I have?
A. 2001-2004- IHI fixed turbo
2004.5-2008+ - Variable Vane Garrett Turbo

Q. How much power will my stock Allison hold?
A. Rule of thumb is 100hp over stock is the limit before you start to do damage.

Q. How much power will a transgo kit hold?
A. It can hold around 110hp over stock.

Thanks to all the members that help to put this list together with your answers.
Zmc7811, mariopenner17 and DzNutz like this.


Last edited by TheStepChild; 03-06-2013 at 03:32 PM. Reason: 06 LLY is a 2 also and the 10th didgit is a 6 instead of 4 or 5
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