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  1. M

    Remote Start fuse/module? Electrical Gremlins.

    Seem to be having all sorts of electrical gremlins that only appear in winter. Periodically when i remote start the car, it sometimes starts and then goes into electrical what the hell mode and sometimes doesn’t remote start and goes in said mode. When it goes into this “wtf” mode, it wont...
  2. M

    Diablosport 87 tune

    Been running Diablosport 91-93 performance during last winter and summer. Now with winter approaching i realized i don’t really push the pedal anymore cause well, it will be sketchy. So i guess the question is, is it worth running 87 tune with 87 fuel for the winter or it will just make the...
  3. M

    Fender flares and wider tires

    Heya! Looks like rust on fenders is eventually going to win in a year or two at most, despite my efforts. Thinking of buying fender flares and putting larger tires with smaller wheel size to offset the ugliness with flares and tires hiding size. Anyone has any flares to recommend and maybe a...
  4. M

    Wth is this coil?

    Having a rough idle and periodically started getting misfire on #2, passenger side first plug from front of the engine. Moved wires, still 2, replace spark plug and it ran flawless for a day. Then i realized the issue was intermittent and spark plug was actually fine. Happened randomly and now...
  5. M

    Sway bar attachment rotting out

    Noticed my sway bar bushing bolt was broken, ordered new ones. Unable to get old one out so far since it’s melted in there, but also noticed the frame piece for attaching bushing is basically rotten out in the middle. The holes for bolts are still there and other side is fine, however I’m...
  6. M

    Sealight X1 - high beams look weird?

    Hey folks, wondering if anyone ran into same issue or knows whats up. My regular bulb died and i ordered Sealight X1s instead 9008/h13. They fit nicely, had to adjust them a little to make sure they are 3-9 clock aligned. Low beam looks superb, straight and sooooo much brighter. However the...
  7. M

    Exhaust Flange leak, different gasket? Gasket maker? Sealant?

    Hey folks! Recently replaced exhaust manifold on driver side. New manifold came with “donut ring”. Old one was kinda similar size but was all squashed with sealant around it. Cleaned it up. If I understand correctly how the small donut was supposed to work is that it has sealant inside and...
  8. M

    Rear main seal leak? Pics attached

    Been putting off looking into what causes oil drips on the driveway for the winter and it’s finally warming up here on Detroit border in Canada, nice n sunny by the Lake. So far I’ve figured the drops happen more often when i park it uphill with engine and when parked engine downhill, only 1...
  9. M

    Retractable larger mirrors?

    Hey folks, looking at finding mirrors that would help towing wider boat. Don’t want to put actual full size towing mirrors since they look massive and i only tow during summer. Wonder if anyone knows or has any recommendations on some sort of retractable mirrors that might work or something...
  10. M

    Aftermarket front bumper alternative? Yukon

    Hey folks, wondering if anyone knows a decent aftermarket front bumper alternative for Yukon. Maybe a bull bar with front bumper included? My front bumper is cracked and seems like it’s such a common problem that it’s impossible to find a decent used one, been looking around for months in...
  11. M

    PF48E - 12710960, how is it?

    Looking to do an oil change after 3k and thinking of trying out oem filter this time. Previously put FRAM TG10060, it’s much larger than the PF48E I received. Wanted to test if pressure changes with smaller oem filter. Attaching pic of the one I received. Was wondering if anyone has ran a...
  12. M

    5W-30 vs 10W-30

    Looking to do another oil change soon on my 08 Yukon 6.2 with 135k on the clock. Was thinking to run an engine flush before the oil change, put a PF48 ACDelco filter but unsure about which oil to get. I've looked around the forum and some folks stick with 5W, while others lean towards 10W on...
  13. M

    Oil pressure 40cold/20-25hot, safe to drive?

    Hey folks! Noticed i have lower than ideal oil pressure when yukon warms up. Pickup tube seal most likely. There is also small oil leak from the oil pan that i was going to tackle somewhere around April when it warms up and would be replacing pickup tube seal as well. Wondering if it’s safe...
  14. M

    Blizzard hit - no crank no start, obd not responding

    Haven’t started Yukon for about a week since everyone at home was sick. Blizzard hit yesterday on Southern Ontario, close to Detroit. Not much snow, but winds are nuts. Went from 40 to -30. Went to open the car, solid frozen doors, managed to get one open. No crank no start is back again...
  15. M

    Ground strap vs ground cable?

    Considering my ground strap is not looking bueno and new GM strap is going to take a week or two to arrive from Amazon, are there any risks with replacing it with 4 gauge Ground Cable from local store instead? Has anyone done it permanently? I also feel like in rustbelt the insulated ground...
  16. M

    Ground issues? No crank, no start, no obd2, 1h later works as usual

    Was going to school bus stop this morning, opened car, threw in backpack for the gym, closed and tried remote start, lights blinked but no crank. Got back from bus stop, put the key in and car won't crank nor start. All the dash lights come on, radio works, AC works, all gauges works. When i...
  17. M

    How much front lift to level z55?

    Hey, wondering if anyone knows or has done that in past. Looking to level my 2008 Yukon XL Denali with Z55. Was wondering how much lift i need for the front to level it with airbags taking ass up. Is it 1.5 or 2 or none of these and truck would have its front up and ass down if lifted to air...
  18. M

    TPS? - Intermittent #5 misfire, stabilitrak and traction conto

    Was driving home and decided to have a visit at touchless car wash that also pressure sprays bottom of the car. About a mile or two after car wash i get Stabilitrak err, Traction Control err and engine light blinking. Also limps, we get on highway and while cruising at same speed, lights go off...
  19. M

    How to check if front Autoride dampening is working?

    So i started wondering, i fixed the rear suspension for autoride and it’s pumping air and working nicely. Now I’m wondering, how do you check if autodamping in front is actually working and isn’t stuck in some hard suspension mode? Couldn’t find any videos :shrug: Is there any way to test it...
  20. M

    Unbolting front driveshaft

    Hey folks, Coming back with another dumb question, but figured i'd better ask before taking it apart. Yukon 08 Denali, AWD. I need to detach front driveshaft from engine side of ujoint ( 4 small bolts ) to move it a little and reach out to exhaust/pipe bolt. I remember on 09 F-150 the rear...
  21. M

    Tips and Tricks on getting manifold bolts off of Y-Pipe

    Hey folks, looking for any tips, tricks and suggestions on getting Manifold Bolts off of Y-Pipe :) Bolts on mine decided to become one with nuts I tried a little penetrating oil and only have medium impact ( ~500lb breakaway torq ), no luck, doesn't budge. Right now looking around to see if...
  22. M

    Rattle in front of the engine

    Hey folks, trying to diagnose this weird rattle in front of the engine. It’s not constant, comes and goes randomly. Doesn’t sound like it’s inside the engine plus it’s the non-afm 6.2. Only had time to film it this morning and do a quick check, will be doing deeper dive this weekend. Has...
  23. M

    Strut boot has tear, how bad?

    Was doing spark plugs today and while removing front wheel, noticed the "boot" on strut/coil assemble has a big tear in it. Will be ordering a replacement part, but meanwhile wondering what's it's purpose? It doesn't hold air as in the back right? So what happens with the suspension when the...
  24. M

    How reliable are power running boards?

    My new to me denali had power running boards at some point as the wire connectors are dangling on both sides. I’m thinking to install some boards for kids to get in easier and not sure whether to get regular boards at amazon or find used power boards from wrecked denali/escalades. Anybody...
  25. M

    Safe to drive with shot Z55 compressor?

    New to me 08, had it for 2 weeks now. Drives great, but i noticed it’s quite rough on some bumps. Checked RPO and it has Z55, but I don’t hear compressor running when i start the car. Figured something is shot and i will start the investigation shortly. Meanwhile, is it safe to drive with air...
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