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  1. J

    Bluetooth audio options - 11 LTZ (Bose&Nav

    Hey all, I am upgrading to a phone with no headphone jack (an annoying downgrade on that front) and now am seruose about adding BT audio to my factory system. I don't use the XM connection, so would be happy to replace that with an aftermarket BT audio module, but want everything else stock...
  2. J

    Dash cover play in the middle - is this normal?

    Hi all, I have a ‘11 Avalanche that has been mine for about a year. I live in West Africa most of the time, and that’s where the vehicle has been for the last several months. Having it on the rough roads over here has shown some of the parts (of an otherwise tough vehicle) that seem to have...
  3. J

    Bought a used '11 w/ 140k, leave the trans or change fluid/filter?

    I realize there are conflicting schools of thought on older transmissions and whether it's better to just leave them alone or try to service them. Advise specifically related to these transmissions is welcome. I bought a 2011 Avalanche with 140,000 miles. I have no service records for it. I'm...
  4. J

    Rear diff pinion seal - replaced and now it's leaking more!

    Hi folks, I just got done doing the rear diff pinion seal, diff oil change, and one of the rear axle seal/bearing combos. The diff is leaking from the pinion seal now more than it was before, when it was just weeping, haha... Not the direction I was hoping to head! I suspect two things: 1)...
  5. J

    Confusion about '07+ rear bumper models

    I have an '11 LTZ that had poorly repaired rear quarter panel damage. One of the things that wasn't fixed correctly was the rear bumper. The one they replaced the damaged one with is from an LT, so there's no place for the backup sensors to mount. I have the backup camera, so I'm not actually...
  6. J

    Leak - is this trans cooler?

    This line isn't wet on either side of this spot, so I have to assume the leak is coming from the connection. Is this trans cooler? There doesn't seem to be anything to tighten up. Do I just replace the line?
  7. J

    Long shot - anyone have a drawing for metal front skid plate?

    Hi all, I'm wondering if anyone who is unsatisfied with the factory front plastic "skid plate" has had the plan I have. I'd like to have the local job shop cut and bend a stainless skid plate that will attach in the factory bolt holes. I'd like one that is angled and then has a wing on each side...
  8. J

    Tailgate spoiler - how to reattach?

    My spoiler is detached and a little flappy, I assume as a result of the collision on the opposite side of the truck before I bought it. When I flex it as far as it wants to go, I see one broken clip and it's obvious that the tape isn't sticky anymore. Image1697020655 by JasonPAtkins posted Nov...
  9. J

    Driver rear axle won't come out after C clip removed

    Hi folks, I'm swapping (or attempting to) the driver rear axle seal and bearing. I have the diff open and the c-clip removed, but the axle is still hanging up on something, preventing me from pulling it out. Any advice? I gave the hub a few very light tunks outward with a hammer, but didn't...
  10. J

    Anyone recognize this greasable ball joint company's logo?

    I found decaying rubber boots on the upper ball joint and tie rod end. Both of the ball joints have grease zerks, so I assume they aren't OEM (it's a 2011). I like the idea of keeping these greasable parts (especially since GM doesn't sell an upper ball joint, only the whole $200 upper control...
  11. J

    What's with the line running under the driver's side of the rear axle?

    I thought it was just incorrectly repaired, but have since noticed it on other Av/Tahoe/Suburbans on the road: What’s up with the (I assume brake line) that runs UNDER the axle on the rear driver’s side? I drive in some rough paths, and I can GUARANTEE that it's going to end up getting rubbed...
  12. J

    Caps on wheel bearings like Silverado?

    I was watching a video on replacement of the half shaft, and noticed that the Silverado's have a metal cap over the axle shaft, pressed into the wheel hub. I like the idea of some extra dirt/rust protection. Anyone know if those same caps fit on our vehicles (even though ours don't come with them)?
  13. J

    Where to grab high beam and fog light signal under dash?

    Hi all, I'm adding a Rigid AW light bar to my Avalanche. Rather than use the (expensive) Rigid wiring harness to use a manual switch to turn the bar on to either white or amber, I'd like to do something different. I'd like to grab the signal for the high beams and also the signal for the fog...
  14. J

    New to GM - AC Delco parts that don't say on the part?

    Hi folks, I'm new to the GM world. I've been ordering parts mostly from online vendors and am surprised how many of the parts come in an AC Delco box with the delco part # on the box, but then not on the part. For example, I've ordered two front wheel hubs from different vendors. The both...
  15. J

    Center of dash bouncing up and down over bumps

    Hi all, I have a 2011 Avalanche LTZ that I recently purchased (so I'm not sure what manner of previous trauma caused this damage), but the center of the dash bounces up and down noticeably over bumpy roads, around the speaker grille. I've also found broken plastic pieces in the driver left A/C...

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