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  1. CTX-SLPR

    Truck Dash in an SUV

    Howdy Folks, I've been looking into how to add a middle seat to replace the console in my '13 Yukon XL and I noticed a bunch of commentary from Sierra owners about how the SLT dash (basically the same as the Yukon) kills all the knee space for a center seat. Has anyone ever even attempted to...
  2. CTX-SLPR

    Dash Vinyl Covering Material

    Howdy, I did the ABS/acetone resin over fiberglass reinforcement on the back of my dash which had cracked apart so bad that there was no way to get it back together without obvious cracks. I'm wanting to cover the plastic surface with some stretchy vinyl...
  3. CTX-SLPR

    SUV vs. Truck 6.0

    Howdy, Still considering that L96 6.0L swap but I've noticed that the Hollander crossref for the L96 doesn't show the SUV and the Trucks/Vans crossing. Anyone know the difference and if it matters if you're going 5.3L to 6.0L so have an engine to swap bits over between? Thanks
  4. CTX-SLPR

    GMT400 Style Tail Lights

    Howdy, I've really decided I like the old GMT400 (and honestly the GMT900 Escalade without the character line) looking lights best. https://www.ebay.com/itm/317516146865 Does the aftermarket make these with regular bulbs or is going LED the only option? Thanks
  5. CTX-SLPR

    LY6 to L96

    Howdy, For the purposes of an engine swap/upgrade, is the only difference between the gas LY6 and the flex fuel L96 the injectors and fuel lines? Considering turning my Yukon XL into a DIY "heavy half" to get a bit better towing performance out of it on hills. Both of the Gen 4 6.0L 2500...
  6. CTX-SLPR

    Street Smart Transmission Review

    Howdy all, I'm now at about 3mths and 1100 miles on my Street Smart 6L80 with an upgraded "billet" converter. I do plan on updating this over time but I've put enough miles on it and towed the scout trailer to consider giving first impressions. For a brief recap on the install, it's not...
  7. CTX-SLPR

    FOUND: C-Pillar Rattle

    Howdy folks, I didn't find a thread on this already but it drove me nuts for a year so wanted to give a note to everyone in case someone else runs into the same rattle that sounds like it's coming from the C-pillar area. first off, check the usual suspects like making sure the jack and tools...
  8. CTX-SLPR

    Tahoe Taillights on Yukon Harness

    Howdy, I honestly doesn't like the look of the Yukon tail lights, to me they are 2000's "Altezza" style and look like aftermarket units despite being OEM. While I like the Escalade LEDs, that is a significant commitment to keeping them going as the light elements aren't replaceable like bulbs...
  9. CTX-SLPR

    Transmission Out, What Maintenance While I’m in There

    Howdy, Having to replace my transmission as I have lost confidence in the unit enough to not just replace pieces. With the transmission out, is there maintenance I should have done while the back of the engine is exposed? Heard about upgrading the “barbell” diverter which would require...
  10. CTX-SLPR

    LM7 5.3 with 10L80

    Howdy, Some friends and I have been discussing the 10L80 swap that's available for the earlier SUVs and Trucks and one of the sticking points is the match between the MPFI 5.3L's (LM7 in my case) and the 10spd, especially considering I have a 3.08 rear end. This is an unlikely solution to my...
  11. CTX-SLPR

    Reliability; Denali XL RWD vs. Escalade ESV RWD

    Howdy folks, With the transmission on my 13 Yukon XL back to it's old trouble I'm weighing the possibility that I have a bad reman 6L80 from the previous owner and no real way to track down who did it for any sort of warranty action. To quickly summarize, we got this SUV because we take people...
  12. CTX-SLPR

    6L80 Heat Related Symptoms

    Howdy, Well now the weather is warming back up, I'm getting the same symptoms as I was before I fixed the missing check ball in my 6L80. Watching the temp in the DIC (scan tool showed within a degree last we checked) and it's hitting over 200ºF in 55mph surface streets with lights. Once it...
  13. CTX-SLPR

    Yukon/Tahoe Tail Light Plug P/N

    Howdy, Does anyone know the P/N or the connector family for the tail light connector? Heavily considering the GMT900 Escalade tail lights and trim panels to replace my leaking stock units but don't want to cut up the existing harnesses. I'm quite familiar with depinning and splicing wires so...
  14. CTX-SLPR

    RWD 6L90E + AXN Axle Swap

    Howdy, So I've found a used 6L90 locally which I know is going to have a longer tailhousing with a different U-joint. I'm also considering a 3.42:1 AXN out of a RWD Escalade at the same time so that's another U-joint that's different. With this combination will a GMT900 Suburban 2500 shaft...
  15. CTX-SLPR

    6L80 Transmission Cooler Seal(s)

    Howdy, Not finding an answer so does anyone know the part number for the transmission cooler seal(s) on the side of the case? Need to change my cooler lines and I don’t trust something that comes in individual pieces to come with all of the needed gaskets or to confirm it’s O-rings and a...
  16. CTX-SLPR

    LZ1 Hybrid 6.0 into Normal Truck

    Howdy folks, While there's a chance my dissatisfaction with the towing capability of my '13 Yukon XL with the 5.3L is trans related, I still can't ignore the siren's song of more power. Has anyone ever taken a LZ1 or LFA 6.0L out of a hybrid and done the AFM delete, including cam, and swapped...
  17. CTX-SLPR

    6L80E Trans Trouble

    My apologies for any duplication but am on my phone, away from home so searching is pretty hard. The 6L80E in my 13 Yukon XL RWD is acting up and I'm debating trying to slap together so thing to make it back home or just run it. The truck doesn't have the HD cooling package so I only have the...
  18. CTX-SLPR

    Manual Mirror Tip

    Howdy, Is there a way to manually trigger the mirror tip like you can setup for triggering in reverse? I like the tip for backing into parking spots but not for backing out of my driveway. Any way I can just get it when I want it, maybe set the seat memory for the seats in the same position...
  19. CTX-SLPR

    Stripped Seat Height Adjuster Gears

    Howdy, So I've been doing some digging into how to address the most pressing bits of my new to me 2013 Yukon XL and doing some more digging into the seat adjuster failure, it looks like GM has taken a page from the old Ford power window motors with plastic gears that eat themselves. There is...
  20. CTX-SLPR

    Escalade Front Seats in SLT Yukon

    Howdy, So the drivers front seat of my '13 Yukon XL SLT has a broken rear leadscrew so the back won't go up and down. It also has a small tear that I can patch up so that's less of an issue. I have found a set of seats out of an '09 Escalade that are fully functional and in mostly better...
  21. CTX-SLPR

    Migration up from GMT400

    Howdy, I must migrated up from GMT400, both in terms of the forum and vehicle. We've had a 1998 K2500 Suburban since 2015 but it's maintenance was growing both beyond my own skills and my time to invest having gone back to grad school for a PhD in Nuclear Engineering in my 40's. We just got a...

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