engine

  1. DJPoertsch

    Tahoe 2007 starts rough and smells like gasoline

    Good morning dear friends from the forum. I wanted to talk to you about whether my assumption was correct. My Tahoe 2007 with currently 424800 km starts very unsteadily after standing for a long time and then smells like petrol. It only runs for about 5 -10 seconds and then it's quiet. No...
  2. R

    Low oil pressure on cold start and lifter tap, slowly rises to normal with engine temp

    2009 Tahoe 5.3 Low oil pressure on cold start and lifter tap, slowly rises to normal with engine temps and tap also goes away. Got a 2009 Tahoe 240k miles on it. Did an oil change the other day 15w-50 no issues but cold started it this morning (40f) and she was tapping loud and had barely...
  3. M

    Help please

    Hi I’m new here, just made an account because I cannot figure this issue by myself. I have a 2003 tahoe LS with the 5.3 FLEX FUEL. It wasnt in the best condition but ran a good 10k miles before it crapped itself. The original issue was that it broke down on the highway and when i tried turning...
  4. H

    Loud baffling and chugging noise when Cold Starting

    This may or may not be major or even worth losing a second over sleep. But I cannot for the life of me understand why my 2012 Tahoe LT 5.3 sound like it’s cammed or if it has a performance exhaust. It starts up just fine, there’s no delay in turning the key. I just want to make sure it isn’t a...
  5. A

    oil Viscosity for hot wether.

    My father have 2012 yukon 5.3L and GMC recommending 5W30 dexos grade for their engine. however, he used to change it to this viscosity until the engine started to get older (after maybe 5 years) he changed to 10W30 until today. After 13 years and 270000km (167000mi) the engine valve lifter...
    • Abdu1aziz
    • Thread
    • 2012 engine gmc yokun low oil pressure oil oil brand oil pressure valve lifter viscosity
    • Replies: 11
    • Forum: Engine & Drivetrain
  6. DJPoertsch

    Chevrolet Tahoe 2007 engine just quit while driving.

    Hello forum members. Today I had a strange situation on my way to work. I was driving down a hill as normal when I noticed that my engine had completely died. Of course, I had hardly any braking power, and the steering wheel was difficult to turn. However, all my electrical components were on...
  7. D

    Yukon Engine Failure - Buyback?

    2022 Yukon XL - Total engine failure (while driving) at approx 16,000 miles. Has anyone made any progress with GMC for this issue? Every rep I’ve spoken with won’t ancknowledge the NHTSA investigation, and I’ve been stonewalled by customer service advisors who keep contradicting each other...
  8. A

    Yokun 2012 cranks, but won’t start ((sometimes))

    Hi everyone, my Gmc yukon 2012 sometimes in the morning cranks over and over then starts and sometimes starts but after couple seconds without check engine light and my fuel pump is working great. After the engine warms up, this problem disappears like it never happened. This is it notice...
    • Abdu1aziz
    • Thread
    • 2007-2014yukon computers cracks engine engine idle gmc gmc yokun sound switches tahoe 2012
    • Replies: 3
    • Forum: Engine & Drivetrain
  9. R

    Strange Noise on Cold Start After Drive – 2022 Tahoe LT (82,000 km)

    Hey everyone, I have a 2022 Tahoe LT with 82,000 km on it, and all maintenance has been done at the Chevy dealer here in the UAE. After my last major service, I started noticing a strange humming noise when starting the car from a cold start. The noise happens when I start driving but...
  10. iboughtatahoe23

    Engine block heaters/warmers

    Wondering if I have a block heater on my 2014 Tahoe LT? I’ve never seen one but also haven’t really looked. If I don’t have one, Do I have any options? Winters are long here in NESD and it can be anywhere from -40° with windchill or 20°F. Really depends on how Mother Nature is feeling that day...
  11. D

    Weird Noise hard to describe 04 Tahoe

    I have this weird noise coming from the tahoe. It is hard to describe. So far I changed the serpentine belt and harmonic balancer but it is still there. I did take off the valve cover and confirmed that all the lifters are moving. I checked the flywheel and torque converter bolts. Everything...
  12. K

    Need Advice - 2018 Yukon Denali - needs new engine

    We drove about 2 hours and at the end of our trip heard a winding or squeaking sound coming from the front of the car. At that point we were doing about 30-35 mph with in town. Got to my daughter's house had it idling tried to listen for the noise with the hood open and heard nothing. The car...
  13. J

    2021 GMC Yukon Denali Oil Burn

    I've got a 2021 GMC Yukon Denali with 85,000 miles and just had a notification pop up on dash about low oil. Oil Life Gauge has me at 38% life remainging still. Checked the dip-stick and was bone dry. Any thoughts on why this could be burning almost 40% oil? Put 2 quarts in it to get me by until...
  14. J

    Is Motor worth saving or Just get a new motor

    I was going to work one morning and i noticed it shifted just a hair too late and then I slowed down to make a turn and the truck just shut off. It didn’t make any popping or crunching noises when it shut off, it was so quiet and sudden that I didn’t even know it did until I tried to make the...
  15. M

    2015 Suburban-Periodic rear end rumble strip sensation at highways speeds, between 1k-2k rpm

    Same feeling when you drive over a "rumble strip" on the highway occurring at highway speeds. The sensation feels like it is coming from the rear of the vehicle, will last for a second or two along with a rpm drop of about 100-250. This will repeat rhythmically sometimes, and randomly at times...
    • montcrw15
    • Thread
    • abnormal shifting engine highway speed rpm drop rpms rumble shifting transmission
    • Replies: 3
    • Forum: Engine & Drivetrain
  16. S

    2015 Tahoe PPV Cyl 7 Intermittent Misfire

    Hello everyone, I’m new to the forums, my names Shawn and I own a 2015 Tahoe with the l83. I’ve had a cylinder 7 intermittent misfire for some time now and I can’t seem to figure out what the issue is. Here is the list of items I have changed/fixed. Fuel pressure is good, injector balance is...
  17. J

    07’ LMG swap to 08’ LS2

    The 5.3 LMG in my 07’ Tahoe is about dead. I want to swap it with 6.0 LS2 from a 08’ Trailblazer SS. The LS2 comes with the wiring harness and ECU. No VVT on either but the 5.3 has DOD and the 6.0 does not. Is this a plug and play with a small tune kind of swap? It’s my first swap and and all...
  18. Dustin Jackson

    Guys I need help figuring out this engine rattle

    Hey guys I think it has come time for my Tahoe for a AFM lifter delete. I think I am having a lifter failure but this sounds different from other videos I've seen. Someone said the pushrod might be out of place causing this sound? What do you think?
  19. E

    Considering a 5.3 to 8.1L CI Vortec 8100 L18 swap for a 2007 Yukon XL 1500 SLT

    Hi Everyone, I'm currently considering swapping out my 5.3L V8 which has an ever-existing oil leak off the back of it to either a 6.2 Vortec or even possibly a bigger engine like the L18 8.1 Vortec engine. There's a business that "remanufactures" the engine (found here ) and it seems like it...
  20. Police428

    04’ Yukon SLT 5.3 L59, Engine replacement?

    Got my test result from my Oil change a week or so ago. It’s a “yikes”. Possible engine rebuild in the works?. Will update regularly Test Result by BlackStone Labs in IN If it comes to the engine being out, should I rebuild and upgrade, or just put in a OEM replacement long Block?
  21. J

    Smoking and engine tapping

    Hello, I’m new here so I just wanted to say hello and… HELP ME! I have an 04 tahoe with 245k miles on her. I have some multiple surgeries on her and I think we have the worst one yet. Literally 45 min ago I was driving (she hadn’t been driven in a couple months because I was over seas) and I...
  22. Chloe_21

    6.2L V8 - 2021 owners

    What is your real MPG? 2WD or 4WD? (I don’t need a 4WD so I ordered a 2WD). I, so far, go to work 4-5 days a week 1 mile away but tend to go around town to run errands and such. (I’m figuring like $200-$300 for gas a month) right now my 8 yr old, V6 Acadia is getting like 11 MPG but I fill...
  23. R

    Help Me With My Project Car / Engine Swap

    I have tried posting some stuff on other forums, and I know this isn't a dodge forum, but I have had way better luck with finding smart people on this forum and have been reading things on this forum for yearsss. I am sure there are some smart people on here that will be able to chime in, so...
    • Ryan Casey
    • Thread
    • car caravan dodge engine engine swap help project transmission
    • Replies: 2
    • Forum: Other Vehicles
  24. M

    May buy 05 Yukon - what should I look for?

    I'm considering purchasing an 05 Yukon XL SLT with just over 145,000 miles. It has lived in the south all of its life and is in great shape cosmetically. What should I keep an eye out for in the guts? My understanding is the 5.3 V8 is stout and the transmission is pretty good too. So this...
    • mdcaffee
    • Thread
    • 2005 yukon engine gmc yukon issues maintenance slt transmission yukon yukon xl
    • Replies: 25
    • Forum: General Discussion
  25. C

    2011 Tahoe White/Blue Smoke on Startup, Dealer Says New Engine

    Noticed within the past few weeks when we would start the truck cold in the garage, we'd get a puff of white smoke, minor blue hue, but very white. It billows for about 10-15 seconds, then goes away. The truck runs perfectly fine. No temperature issues or overheating. I performed a combustion...

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