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  1. Johnms

    NAPA Alternator

    Thanks! That video on checking your alternator on that site was excellent.
  2. Johnms

    NAPA Alternator

  3. Johnms

    NAPA Alternator

    I have been battling my Alternator issues. We often do 30-day RV trips towing with my 2009 YUKON XL and in North Dakota (I live in Florida), my GM Alternator lost a bearing. I managed to get to a NAPA Repair shop near our campground and they ordered a new one from NAPA and replaced it for me. I...
  4. Johnms

    Factory dent messed up more by dealer

    I saw this on a YouTube channel I follow and thought that I should share it. It's a 2022 Yukon Denali with a factory defect on the right rear quarter panel which was made worse by the dealer. Repairing a 2022 Denali
  5. Johnms

    "Service Brakes Soon"

    Just picked up the vehicle. They said it also needed the Master Cylinder. That makes more sense than the brake booster. Brake Booster $250, Brake Pressure Switch $150, Master Cylinder $175, Labor $460 plus tax. Grand total $1147.
  6. Johnms

    "Service Brakes Soon"

  7. Johnms

    "Service Brakes Soon"

    I was surprised too and I do not know how they tested the booster to arrive at that issue resolution. Since it only came on (briefly but a couple of times and whenever I trailer) I suspect that the extra weight of the RV on the booster (if it was having issues) would be when the light would come...
  8. Johnms

    "Service Brakes Soon"

    Here is a follow-up - Just got the call from the mechanic. The brake booster was failing, they are replacing the brake booster and the sensor switch.
  9. Johnms

    "Service Brakes Soon"

    2009 Yukon XL 1500 - I am getting a "Service Brakes Soon" message - but only when trailering. I have had my brakes served twice since this started and that includes a complete fluid replacement. I did have a sticking rear caliper replaced last year. The braking seems normal with no issues. Can...
  10. Johnms

    What is this part? See photos. Should these be tight? Mine are hand loose. 2009 Yukon XL 1500 5.3 flex

    Thanks, I'll order a pair and swap them out!
  11. Johnms

    What is this part? See photos. Should these be tight? Mine are hand loose. 2009 Yukon XL 1500 5.3 flex

  12. Johnms

    Real Life MPG 5.3 / 6.2

    No one has mentioned the axel ratio, I guessing since the post was about a 4 x 4. Mine is a 09 2WD Yukon XL 1500 and has the 3.08 axel ratio. I get 21 on the hwy -18 in the city, 11 towing our small camper. The trade off for that ratio is that the towing capacity is 5400 (1833 payload) and their...
  13. Johnms

    Smell gas fumes by filler cap

    Based upon my experiences with my 2009 Yukon 5.3, (I am not a mechanic) the smell of gas and longer starting times is likely an evap issue. There is a air line near the filler neck that is supposed to draw in those vapors into an evap canister, hold them in the canister until they can be...
  14. Johnms

    Not taking Gas

    I just went through this and solved the issue. Don't keep throwing parts at this. Most likely, the beads inside the charcoal cannister are clogging the vent line from the filler neck to the cannister. The gas cannot vent so it cuts off the pump. While many try to blow out these lines, you can...
  15. Johnms

    OEM Fog Light plugs on harness

    I just bought a 2009 Yukon XL that had been in a front-end wreck and repair. Was supposed to be minor but I saw "Tahoe 08" written on the frame bumper support underneath so I suspect that it was more involved than CarFax led me to believe. They have blanks over the fog light openings, but I...

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