engine

  1. 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...
  2. 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...
  3. 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...
  4. 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
  5. 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...
  6. 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...
  7. 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?
  8. 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...
  9. 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?
  10. 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...
  11. 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...
  12. 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
  13. 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
  14. 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...
  15. PatDTN

    2009 5.3 engine

    Removed and replaced with 6.2 due in part to mistaken fault diagnosis. Engine was running strong with 220k miles just prior to removal. I mistook loss of oil to be failed AFM and bought a replacement engine to swap in to minimize downtime. Issue turned out to be completely clogged exhaust due...
  16. J

    2006 Tahoe Engine stumbles/dies when I hit a bump

    I have a 2006 Tahoe 4WD 5.3V8 with 170k miles on it. New transmission at 110k. It has been a great vehicle, but a couple of years ago it developed an issue where it would die when I hit a hard bump. It did this for quite a while but I was able to live with it since it only happened on off...
  17. N

    Help please: Cam & Lifters replacement

    Hi there I have a 2007 Tahoe LTZ 5.3 flex fuel, It has 157k miles and I just bought it from a dealership as is. It looks like some oil changes were not done in appropriate timing as the oil was a bit caked on so I did some extensive repairs. I had a lot of problems with oil pressure so I...
  18. clemenshess97

    Engine stalls when in drive

    Hey everybody, my tahoe was acting very strange today... When I turned it on after sitting for an hour the engine idled very rough between 500-800rpm and needed like 30secs to stay at 650rpms. After 15mins of driving the check engine light came on and the display said the engine has reduced...
  19. Barking-Iron

    96 Tahoe LT Engine Swap

    I’m wanting to replace the motor in my ‘96 Tahoe. It’s the 2-Door LT with 4 wheel drive. As of now everything is stock, but I’d like to replace the motor for something with a little more HP. It’s a daily driver, so I’m not looking for anything that’s going to burn the rubber off my tires. I’ve...
  20. C

    Vibrating/Grinding Noise from top of engine

    I have an 07 Tahoe 5.3L V8, and about a month ago I started noticing a quiet noise when slowing down to a stop, when the engine returned to idle, for a brief second it sounded as though maybe a pulley was bad or AC clutch not disengaging all the way. As two weeks passed, it started lasting...
  21. NE-KID

    Engine additives, fuel treatment and oil

    What do you guys and ladies use? I use ZMAX fuel and oil I tried some of the other brands like Lucas and etc I like ZMAX works really well and never failed me.
  22. A

    Please help

    I own an 02 Tahoe 2wd. I was driving to work and less than 100yrds there I lose power at the accelerator I’m barely chugging along and my truck sounds like a combination of backfiring and popcorn popping when I press the accelerator. I made it to work parked and on idle reving the engine...
  23. O

    2004 GMC Yukon - Suspension and Engine Rebuild Help!

    Hi guys, I have a 2004 GMC Yukon with 275k+ original miles. I am looking to replace the front and rear suspension components. I have been looking at the Bilstein Shocks for my truck and I have heard positive reviews. What do you guys suggest I should be getting for both the front and rear...
  24. J

    P0300, Service stabilitrack and rough idle.

    I’m at a loss. I have a 2011 Tahoe z71 that we purchased a month ago. Truck has 165k miles. It started running rough at idle and seemed to be getting bad fuel mileage. On cold starts it seems to run great and after warming up it gets a slight rough idle. Seems to lighten up when placed in park...
    • Joe W
    • Thread
    • engine idle misfire p0300 performance rough idle stabilitrak tahoe voltage z71
    • Replies: 4
    • Forum: Engine & Drivetrain
  25. DJPoertsch

    Engine Light comes on with 5 DTC's at the same time. I don't know what i Could be. Need Help!

    Dear friends here from the forum. I'm a little desperate. I have had the engine indicator light on the display for a long time. I have read out the control unit and now have the following error codes P0064 P0060 P0420 P0430 p0446 On the picture only P0420 is seen. But I always get the P0430...

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