Advanced Drivetrain, Suspension & Tuning

6,734 topics in this forum

1. Recommended engine oil for L83 supercharged

   By Louie.c, June 18, 2020
   • 5 replies
   • 13.9k views
   • 
   • Grumpy Bear
   • June 19, 2020

2. Need Help On Tire Size / Lift Question

   By craigtr97, December 29, 2011   

   • lift
   • 5 replies
   • 1.8k views
   • 
   • fishbones182
   • December 31, 2011

3. Transfer Case, Dexron III or Auto-Trak II?

   By ebk, June 14, 2013
   • 5 replies
   • 27k views
   • 
   • ebk
   • June 15, 2013

4. 2000 Silverado 2500 wont shift

   By tyhuck, May 29, 2014
   • 5 replies
   • 1.3k views
   • 
   • gmtech4
   • May 29, 2014

5. rough country leveling kit. yay or nay?

   By JJRS89, May 29, 2014
   • 5 replies
   • 1.6k views
   • 
   • daxr
   • July 6, 2014

6. BB tuned for 94 octane but....

   By 2010LTZ4x4, May 11, 2014
   • 5 replies
   • 1.2k views
   • 
   • 2010LTZ4x4
   • May 11, 2014

7. Questions about level lifting GMT 800

   By cghbuilder86, November 21, 2011
   • 5 replies
   • 8k views
   • 
   • Mckenzie
   • November 24, 2011

8. Which Tune: 87/89 octane or 91/93 octane tune

   By Vetteran, December 21, 2016
   • 5 replies
   • 8.6k views
   • 
   • Jennabear
   • December 29, 2016

9. New member, poor throttle response.

   By ajanes89, September 2, 2012
   • 5 replies
   • 2.1k views
   • 
   • chevyman09
   • September 10, 2012

10. !!!5.7L compression test need advice!!!

    By tybic, February 7, 2015   

    • compression test
    • 5.7l
    • 5 replies
    • 67.8k views
    • 
    • 8.1HD/ALLISON
    • February 10, 2015

11. New Truck Owner Help?

    By BouncingCoal, February 4, 2014
    • 5 replies
    • 1.8k views
    • 
    • Thaadius
    • December 5, 2018

12. If you have a suspension lift , chime in >>>>

    By Fallz, December 29, 2011
    • 5 replies
    • 1.3k views
    • 
    • Fallz
    • December 30, 2011

13. i want to make 550 hp on 4l60e

    By da7ome, October 21, 2017   

    • 2009
    • gmc
    • (and 7 more)

      Tagged with:

      • 2009
      • gmc
      • sierra
      • 5.3
      • 4l60e
      • transmission
      • 4x4
      • 550
      • hp
    • 5 replies
    • 3.4k views
    • 
    • NSSANE02
    • December 6, 2017

14. Mickey Thompson Baja ATZ 35x12.5-20 with Rancho 4"

    By joelbunge, April 24, 2013   

    • rancho lift 4 6 bds mickey
    • 5 replies
    • 1.8k views
    • 
    • cparks555
    • April 29, 2013

15. Need help, bad vibration occasionally at 45 - 60 mph

    By fedfuzz79, May 20, 2012
    • 5 replies
    • 18.3k views
    • 
    • fedfuzz79
    • May 20, 2012

16. 2011 GMC Sierra 2500HD and 3500HD Tuning

    By mcali17, December 10, 2011
    • 5 replies
    • 3.6k views
    • 
    • mcali17
    • December 14, 2011

17. problems with a suspension lift

    By bpitre8, February 27, 2013
    • 5 replies
    • 11.7k views
    • 
    • SarahsGMC
    • March 3, 2013

18. Cats Or No Cats

    By [email protected], October 25, 2011
    • 5 replies
    • 2.1k views
    • 
    • stlavsa
    • November 1, 2011

19. Adding a body lift

    By CamZ71, February 23, 2012
    • 5 replies
    • 1.4k views
    • 
    • ruggedlife
    • March 7, 2012

20. 2014 6L80 transmission fluid change

    By fiziksgeek, November 25, 2016
    • 5 replies
    • 3.9k views
    • 
    • Eddie 70
    • December 4, 2016

21. Anyone running the 4" Ready lift SST kit ?

    By Fallz, January 24, 2012
    • 5 replies
    • 1.2k views
    • 
    • lbkthree
    • January 29, 2012

22. Best Lift package for a 2011 GMC Sierra Crew Cab 1500

    By Canada-GMC, September 3, 2012
    • 5 replies
    • 16.3k views
    • 
    • ruggedlife
    • October 19, 2012

23. understanding a drop?

    By centex, December 20, 2011
    • 5 replies
    • 1.2k views
    • 
    • ruggedlife
    • December 21, 2011

24. Leaf Springs Sagging

    By dreisenauer, September 4, 2012
    • 5 replies
    • 2k views
    • 
    • dreisenauer
    • September 6, 2012

25. Evap Codes Affect Tune???

    By tyhuck, February 8, 2012
    • 5 replies
    • 1.3k views
    • 
    • tyhuck
    • February 10, 2012