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  1. M

    A/C rebuild

    When the AC compressor went out in my '03 Suburban, I purged the system and replaced everything myself. Not too bad of a job if you take your time and make sure everything in the system is clean/flushed of debris. Doesn't take much to clog up the orifice tube, which will require you to...
  2. M

    Magnuson Supercharger, Valve Train and other supporting mods. 2007-2013, 5.3L Chevy Tahoe

    Keep the rest of us minions updated on the build and most importantly your impressions of the final result!
  3. M

    Magnuson Supercharger, Valve Train and other supporting mods. 2007-2013, 5.3L Chevy Tahoe

    I installed a magnuson 1900 on a LS1 at 48K miles at 130K she's still running fantastic. I had to modify the tune to accommodate my other bolt ons. Can't say a maggie is the 'best choice' for your tahoe, but it seems to fit what you are looking for. I.e. additional HP/TQ for off-roading, not...
  4. M

    Magnuson Supercharger, Valve Train and other supporting mods. 2007-2013, 5.3L Chevy Tahoe

    The TVS1900 kit on their website shows the hand held tuner comes with the 2010 5.3 engine tune. Not sure of the difference between your '12 and the '10s however the tune should be sufficient to get your going, especially if you don't get into the boost. My guess is that because this kit is...
  5. M

    Magnuson Supercharger, Valve Train and other supporting mods. 2007-2013, 5.3L Chevy Tahoe

    Having had a few SC'd vehicles, I'd suggest a roots blower, rather than a centri for your tahoe. Roots make max torque just off idle, thus are good for heavier vehicles where you don't want/need to spin the engine to generate torque. A magnuson install is pretty straight forward and they come...
  6. M

    Exhaust Manifold Bolts No Bueno

    The bolt clamp gizmo is a breeze to install on the passenger side. Took me about 15 minutes. I then spent 15 minutes looking at the driver's side and called it a day and went back inside.
  7. M

    Engine knock from exhaust when cold

    Broken exhaust bolts are pretty common in the 6.0 and 6.2s. Mine would tick when cold and then taper off as the engine warmed up.
  8. M

    WTB 2009-2014 Yukon Denali, help with best year/engine

    I just traded m '09 Denali for a '14. The '09 was a work horse and had zero engine issues when I traded it at 137K miles. Had it not been for some minor body rust, I would not have thought twice about keeping it for another 50K miles. Time will tell if the '14 I purchased has AFM related oil...
  9. M

    Service Stablitrac, service traction control

    Good sleuthing OP! That's not the easiest or most intuitive place to check for this issue. You could have spend quite a bit of money for the local shop to stumble across this.
  10. M

    2015 Tahoe then bought 2016 tahoe, here is my horror story on engine, A/C etc.

    I don't purchase the first model year from any manufacturer. And if I were to, be damn sure it has a warranty. Sorry to hear about the lemon hoe, hope you come back to the GM fold in due time
  11. M

    Rear windshield wiper

    The nut holding the arm to the motor loosened up on my '03
  12. M

    Advice buying a new to us 2012 Tahoe

    Something's not right there hoss. I've driven several of the 5.3's from that generation and they were all very 'peppy' especially with only a couple of people and no load/trailer. If'en you could 'count to 5' before the beast moved, there's definitely an issue.
  13. M

    Overheating towing with Denali 6.2L - Losing my F'n mind!!

    I have an '09 Denali with the 6.2 and interested to hear what the issue is/was.
  14. M

    A Word To The Wise When Doing Spark Plugs

    Apply dielectric grease to the inside the rubber boot and ceramic portion of the plug will help to prevent the boot from sticking/bonding to the plug. Additionally, the insulating (non-conductive) properties of the grease (when applied in this manner) will minimize the potential for the spark...
  15. M

    A Word To The Wise When Doing Spark Plugs

    I just buy new wires, when I change my plugs
  16. M

    08 Denali engine overheating

    Another vote for looking at the transmission side of the issue
  17. M

    Advice about buying a used Yukon to replace my 2003 SLT with 302,000 miles

    I've got a 2009 Denali (6.2L) without AFM. It has 130K on it and no major issues!! If it were not for body rust, I would plan to drive it to 200K.
  18. M

    Apparently no one knows the horn location

    Lack of papers? :joke:
  19. M

    Cant figure out P0300 and loose steering feel

    My 99 tahoe would occasionally throw a death wobble while driving. I replaced most of the front suspension in an attempt to fix it. Once I replaced the center link, all was good.
  20. M

    To 2018 Yukon owners, especially Denali

    I have had both the 5.3 and the 6.2. The 5.3 is sufficient unless it is fully loaded with people and bags or if you're pulling a modestly heavy trailer. I was pulling an open car trailer with a 99 Grand Prix strapped to it. On flat roads the 5.3 did well, however it struggled going up hills...
  21. M

    need help solving lean condition

    When you first start your motor, the PCM is in open loop mode, meaning LTFT/STFT are locked. Fueling is done via the MAF and VE tables in the PCM. Only when you hit operating temps do the fuel trims unlock and adjust according to your O2 value. If you are getting bad gas mileage + your PCM...
  22. M

    2007 Drivers side blend door cleaning!!

    That 3rd bolt is a *****! Especially if you have a center console. I removed the first two, no problem. Spent about 30 minutes squeezing my hand between the plastic of the center console and the tunnel, said F-it, fall is coming, this can wait another year :0
  23. M

    96 Tahoe dies while driving and won't start

    That's a very great (observant) mechanic. Keep him on your Christmas card list!!
  24. M

    96 Tahoe dies while driving and won't start

    I had a Tahoe that would crank and not fire, however come back an hour or day later and it would start no problem. It did this intermittently, with no discernibly pattern. I tested/replaced most of the things that have been suggested in this thread. After exhausting all other possibilities...
  25. M

    Boost fuel economy

    Best (and cheapest) thing you can do is change your driving habits. My 2009 6.2 Denali XL has reliably provided combined city/hwy MPG of ~14-14.5 for the past 3 years. The 5.3 Suburban before it got 14.5-14.8 routinely on the same route to work.

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