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  1. Bxcliff

    My 2003 GMC Yukon Denali

    I was testing out my new camera and thought she looked pretty good. I bought a second-hand HD hood that I'm waiting to find someone to help me prep for install. Don't ask me why I had to put a mismatched color hood on, it been there for years, and its finally time for it to go :Big Laugh:
  2. Bxcliff

    Low Fuel Pressure/P0300 - 2003 GMC Yukon Denali

    I've been fighting with a p0300 (multiple cylinder misfire) code for a while so I had recently replaced my intake manifold gasket along with knock sensors w/ new harness, and while my fuel rail was out, I had the injectors cleaned by a professional with new o rings and filter for each one. The...
  3. Bxcliff

    Searching for Catalytic Converters

    I'm 99% sure my cats are clogged in my 2003 GMC Yukon Denali and I'm having trouble trying to find a good replacement for my truck. Some of them don't come as a full Y-pipe while others that are sold with both left and right pipes don't seem to have a way to connect them back similar to OEM...
  4. Bxcliff

    What Rear Diff Do I Have?

    So I'm planning on doing a well-needed diff fluid change with a new cover in my 2003 GMC Yukon Denali and I wanted to know what specific rear differential do I have. I know its a 10 bolt but I've seen different variations of 10 bolts from older to newer cars regarding the size of something in...
  5. Bxcliff

    P0300 Code On For Years and Years...

    So my 2003 GMC Yukon Denali that my family and I had since 2004 w/ 181k miles has had an intermittent CEL for years, actually for as long as I can remember. The thing is, the truck dives totally fine, the engine light comes on only when I take it on a highway (about 60 mph) and it would start...
  6. Bxcliff

    03 Yukon Denali AWD Rough Country Lift Kit?

    I want to lift my AWD Denali but I was wondering if this kit sold by Rough Country would fit my truck. I have completely removed and deleted the Air ride system on my truck and I'm currently running regular gas shocks all around. Since this kit works with the regular 4WD Yukons/Tahoes, would it...
  7. Bxcliff

    Parking Brake Problems :(

    So I've decided to finally fix my parking brakes that haven't worked in years while I'm doing a brake job. I have a 2003 GMC Yukon Denali. So far I replaces both side actuators and put in new brake shoes. In the middle of installing one side only, my stupid self went to test if the parking...
  8. Bxcliff

    Wheel/Tire Spec Help???

    I found this picture of someone's truck and I wanted to know if someone here knows or has a similar wheel/tire setup in this pic. I want to aim for a similar look for my 2003 GMC Yukon as well if anyone could help that'll be awesome. The truck has the same 3-inch lift kit as me also.
  9. Bxcliff

    Flush or change trans fluid

    I've had my transmission rebuilt some time ago in my 2003 GMC Yukon Denali AWD and I'm changing both my differential and transfer case fluids. I also am planning to replace the transmission fluid filter so here is my question.. Should I just change my fluid that comes out the pan or should I...
  10. Bxcliff

    Rusted out & Leaking Brake lines - Brake line Diagram

    My front brake lines started to leak fluid on my 2003 GMC Yukon Denali and i'm fixing to replace the leaking ones for now and replace all the other rusted out lines after winter ( I live in Upstate NY) I tried searching for a diagram for the brake lines from the abs and the rear proportioning...
  11. Bxcliff

    03 GMC Yukon Denali Lift Kit

    I'm thinking of lifting my Denali with this kit https://www.google.com/url?sa=t&...egQIAxAB&usg=AOvVaw0eaLxD6Wf9HKHBBAP0trSm I've been told by others it would fit my truck but I'm concerned about the angle of my CV axles without the use of a diff drop bracket Would this lift cause too great...
  12. Bxcliff

    2003 GMC Yukon Denali Lift Kit

    I'm thinking of lifting my Denali with this kit https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amazon.com/Supreme-Suspensions-Yukon-Chevy-Denali/dp/B00IV5P8D0&ved=2ahUKEwjm8tf5suXdAhXrYN8KHf6rBL8QFjAAegQIAxAB&usg=AOvVaw0eaLxD6Wf9HKHBBAP0trSm I've been told by others it...
  13. Bxcliff

    08 Chevy Suburban 4wd Problems

    My dad has a 08 Chevy suburban ltz and we've had it for years. When we first bought it the 4WD system was working and then stopped after a while. Our warranty didn't cover it so we just left it alone and replaced the CV axle boots. Now after all those years the front differential is starting...
  14. Bxcliff

    New Alternator and Battery, but battery still dies while running!

    Hey guys I'm new to the forums, I have a 2003 GMC Yukon Denali AWD 6.0L that I let sit in the cold for a while here in upstate NY. I bought a new battery for her but it wasn't keeping it's voltage so I suspected it was the alternator going bad, which was the oem, I've never replaced it before...

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