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  1. Joseph Garcia

    How To Remove and Inspect Overhead Temperature Sensing Fan

    I have an increasing level of sound coming from this tiny overhead fan, and I think that it is time to remove and inspect it. I want to perform this operation without breaking anything. Please give me some guidance on how to properly perform this operation. Thank you.
  2. Joseph Garcia

    Where is the RCDLR located in My Truck?

    It looks as though I need to replace my Remote Control Door Lock Receiver (RCDLR) module on my 2007 Yukon XL Denali, and I'm having a challenge to find out where this module is actually located on my truck. I've searched around, and I get different answers on where it may be located. Any tips...
  3. Joseph Garcia

    Hard Downshift

    Hi Folks, I'm looking for some initial thoughts here. Also including @NickTransmissions to the discussion. As part of my supercharger project, I purchased a new GM 6 speed transmission and torque converter, as I thought that new equipment would be better to handle the increased power over the...
  4. Joseph Garcia

    Supercharged Versus Normally Aspirated for MPG

    I had the opportunity to take a 900 mile trip, virtually all highway, with my supercharged 07 Yukon XL Denali, the first long distance trip with my new setup. I drove conservatively for the most part, with the cruise control set to 72 mph and the engine speed averaged 1800 rpm. There were...
  5. Joseph Garcia

    Whipple 2.3L Supercharger Installation on 2007 Yukon XL Denali (6.2L L92 Motor)

  6. Joseph Garcia

    Battery Tender with De-sulfication Built It

    I'm interested in purchasing a battery tender with the additional feature to remove sulphur deposits from the plates. I believe that some on you have made this purchase, and I'm interested in what brand that you purchased, and your thoughts on how it performs.
  7. Joseph Garcia

    C0035 - Diagnosed and Fixed

    I recently had Stabilitrack and ABS dashboard warning lights appear, along with DIC warnings Traction Control Off and ABS Off. I got out my Tech 2, and it told me that I had an issue with the Left Front Wheel Speed Sensor Circuit. I figured that the wheel speed sensor or the speed sensor ring...
  8. Joseph Garcia

    Foam Connecting Air Intake box to Engine Bay Sidewall Rotted Away

    I believe that there has been discussion in the past in this Forum on replacing this foam with other materials to seal the connection. Any insights or links would be appreciated.
  9. Joseph Garcia

    Lift Gate Not Lifting Fully - Solved

    I recently had a situation where upon activating the lift gate, it would lift approximately 30%, and then it would lower and re-lock into the closed position. My Tech 2 showed, "Hall sensor feed status with no output when closed, and short to ground when open command initiated." I did an...
  10. Joseph Garcia

    Kill Switches in Future Autos and Trucks

    This is NOT meant to be political in any way. Period. This is an article that I ran across, and if it is true (I cannot personally verify this), I was certainly not aware of it, and perhaps, other members in this Forum also may not be aware of it. ---------------------------- According to...
  11. Joseph Garcia

    Another Tech 2 Win

    I had the Service Park Assist advisory appear on the DIC, so I got out my Tech 2 and started troubleshooting. This is the screen that I saw on the Tech 2 during the troubleshooting process. I consulted with AllData to find out which park assist sensor was #4, and luckily, it was the right...
  12. Joseph Garcia

    Rock Auto?

    I've been trying to access Rock Auto's web site for the past 2+ days, and I keep receiving the same message. This site can’t be reached www.rockauto.com took too long to respond. Is it just me?
  13. Joseph Garcia

    Migration from ACDelco TDS to GM Techline Connect for Tech 2 Users

    Hi Folks, As you probably know, ACDelco TDS (TIS2Win) site for Service Programming Software (SPS) has been retired, effective September, and current subscription holders need to migrate to its replacement GM Techline Connect. Below, I offer you the process that I used to perform this...
  14. Joseph Garcia

    LOTS of GM Trucks Spotted

    Hi Folks, I'm back from a week in the Grand Tetons National Park, and I want to tell you that I saw MANY GM trucks from NBS through 2021 models driving through the Park and surrounding areas. When I say MANY, I mean that there were more GM trucks driving around than all other truck makes...
  15. Joseph Garcia

    Humorous Story and Question

    Hi Folks, I thought that I'd share a humorous story with you, and then ask for your thoughts and perspectives on a question that came out of this story. Story: I get a call from, my oldest son asking if my Yukon is available to assist him with a problem. I say sure and ask him what the...
  16. Joseph Garcia

    Converting back the Z55 Air Ride Suspension

    After considering the various recommendations from you knowledgeable folks here in the Forum, I am going to convert back to the original Z55 air suspension on my 07 Yukon XL Denali. I will change out the entire front strut assemblies, as I do not know the condition of all their current...
  17. Joseph Garcia

    Hellwig Sway Bars Installation - 2007 Yukon XL Denali

    Hi Folks, I completed my Hellwig sway bars installation, and apart from getting the old sway bar components removed, the installation went reasonably smoothly. I am not a patient uninstaller, so I snapped one U bracket bolt and bent 3 others, during the old sway bars removal process. Hellwig...
  18. Joseph Garcia

    Looking for Advice on Replacement Shock/Spring Options

    Hi Folks, As I was installing my new Hellwig sway bar on the rear of my 07 Yukon XL Denali, I noticed that I have a leaking rear shock. So, I need to replace the rear shocks. When I purchased this new-to-me truck, the OEM rear air ride had already been replaced with cheap coil-over shocks. I...
  19. Joseph Garcia

    Need a Part Number

    Hi Folks, I'd like to get a white trailer hitch cover for my 07 Yukon XL Denali, but I want to be sure that I purchase an OEM cover, so that I have not fit or paint color difference issues. I cannot remember the name of the Forum member here who supplies part numbers to all of us, but I will...
  20. Joseph Garcia

    It's That Time of the Year, Again (at Least, in the North)

    I was taking supplies out of the back of my 07 Yukon XL, and I happened to glance up at the top of the truck body, at the channel where the lift gate hinges and rubber rain molding are. I see this mass of dark feathers, and my first though is that 'somehow' a bird got caught in between the lift...
  21. Joseph Garcia

    What is this Button? - Solved

    While I was under the driver's side dashboard troubleshooting another issue, I found this black toggle button, between the steering column and the center console, right underneath the lower trim panel, about where the driver's right knee cap would be located. Any idea what this button is and...
  22. Joseph Garcia

    Help Needed - B1000 Symptom 35 Trouble Code - SOLVED

    Hi Folks, I need some assistance from the Team. I started using my Tech 2, and I currently have two trouble codes. History: When I first used the Tech 2, I found out that it was working correctly, and I cleared all previous trouble codes, in order to start with a clean and blank slate...
  23. Joseph Garcia

    The Clunk that was Not the Drive Shaft Slip Yoke - Solved

    I've had a clunk in my 07 Yukon XL Denali, since I bought it as-new-to-me, and I have finally solved it. Whenever I was stopped and pushed the accelerator pedal, I would hear/feel a clunk somewhere under my seat. Similarly, whenever I was slowing down, and the transmission downshifted, I would...
  24. Joseph Garcia

    Heater Hose Blew Out

    Hi Folks, I just had a heater hose blow out on my 07 Yukon XL Denali. As the photo shows, it appears to have literally 'torn' itself off, right at the back side of the crimped coupling on the end of the hose, as it looks like there is still hose within the crimped coupling. Question for...
  25. Joseph Garcia

    How Much Water Accumulates On the Roof of a Yukon XL

    How much water accumulates on the roof of a Yukon XL during a long rain storm? Short Answer: A freakin' LOT. Long Answer: Yesterday it rained for the entire day with my Yukon XL remaining outside, something that I do not usually do. With today being over 60 degrees in NH, I decided to put...

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