Recent content by KraftMatic87

  1. KraftMatic87

    2009 Yukon XL Denali - Front & Rear Suspension Refresh

    I finished swapping out the rear today for my air-ride delete. Bilstein 4600 with Moog 81071 coil springs and Moog K160072 insulators on top and bottom of the new springs since the old ones were worn out. I’m completely impressed with the KYB / Bilstein combo, and the truck handles much better...
  2. KraftMatic87

    2009 Yukon XL Denali - Front & Rear Suspension Refresh

    I understand what you’re saying now. I don’t ever plan to tow with this vehicle and that was one of the reasons I felt comfortable going with passive suspension. I never was planning to buy Z55 autoride / electronically dampened struts for the front anyways because they were $500/piece. But in...
  3. KraftMatic87

    2009 Yukon XL Denali - Front & Rear Suspension Refresh

    I understand that the resistors are ‘fooling’ the ECU but here’s my question: The ride height sensors are not being touched because I’m not lifting the truck. I only am putting resistors on the dampener connections for the front shocks that plugs into the top of the strut. I’m genuinely curious...
  4. KraftMatic87

    2009 Yukon XL Denali - Front & Rear Suspension Refresh

    I ended up installing a pair of KYB SRM 4079 Truck-Plus quick struts. I have bypass resistors coming in the mail tomorrow and I’ll be installing those to disable the service suspension light. I’ll be installing Moog 81071 springs in the rear with a pair of Bilstein 4600 shocks this weekend to...
  5. KraftMatic87

    2009 Yukon XL Denali - Front & Rear Suspension Refresh

    Thanks for the tips! Lookin to do suspension work this summer along with new fuel pump. We’ve been driving on the new engine for two weeks and alls well so far. That last block dropped an intake valve in cylinder 3 and made some nice tasty piston McNuggets. I have two and a half years before the...
  6. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    We’re back in action with a new block! Only down for two weeks and glad we’re back on the road. Had a nice 120 mile drive from the shop in Colorado Springs back to Thornton today with no issues. I’ve been missing that 6.2 for sure. Hoping that we don’t have anymore malice in the combustion palace!
  7. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    LT at the shop made a video about the engine failure. My poor Denali is gonna be famous for all the wrong reasons lol
  8. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    Got a picture from the shop today that may explain my sudden engine failure. Pictured below is an intake valve for cylinder 3. The valve appears to be burned and isn’t seated. I recalled a few times when cold starting hearing a loud and sudden ‘bark’ coming from around passenger side of the...
  9. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    Luckily it already has new valve covers and an upgraded GM torque converter was installed during the last engine replacement :rofl: I’m still recovering from that work that was done last summer so I’m going to politely decline any additional upgrades at this time :roflbow:
  10. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    Just heard back from the shop. They confirmed with a borescope that cylinder 3 and 7 are dead, and both pistons damaged. Jasper has approved the warranty claim and I’ll have a new engine installed by the end of next week. Jasper will disassemble the engine themselves and let me and the shop...
  11. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    I was originally looking for a Gmt800 but really loved the look and interiors of the Gmt900s. I thought if I could have a Gmt900 without AFM that would be my sweet spot, and when this truck is running good it’s really hard to imagine wanting to drive anything else. The 6.2 w/o AFM + 6l80 is...
  12. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    Yes! Labor and parts are covered, only replacement fluids are not covered per Jaspers repair warranty. I can live with that. I noticed a small coolant leak on the valve cover before I shipped it down to the shop. The coolant was tinged black so I’m guessing somewhere there is oil / coolant...
  13. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    My original engine and this one did not have AFM. The L9H does have VVT. When I watch this video I can almost hear a similar valve train noise that my original engine was making. The engine we replaced didn’t sound great but it never misfired. This certainly sounds much worse. So bummed but...
  14. KraftMatic87

    2009 Yukon Denali 6.2 L9H Engine Replacement

    WELP! 7 months later we have our first major issue with the Jasper engine. I started her up this morning and noticed it took longer than usual to crank. Once it started it was running very rough. Check engine light and Stabilitrak light was on as well. Plugged in my scanner and came up with a...
  15. KraftMatic87

    2009 Yukon XL Denali - Random No-Start Condition

    Looks like this issue was indeed being caused by a loose negative battery cable. I went to start the truck to take my son to school this morning, and sure enough I turn the key and I get the click with no lights. Opened the hood and jiggled the negative battery cable a bit and the truck started...
See more

Forum statistics

Threads
138,093
Posts
1,998,769
Members
103,016
Latest member
BadDaddy2003

Latest posts

Back
Top