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Brighter Headlights
I have the Phillips xtreme, probably the best halogen and noticeably better than stock. -
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Whistling noise
My old 07 LTZ had a whistle sound. It turned out to be the luggage rack crossbar tightening knob. Mine (if I remember correctly) had a hole in the knob that whistled when it was turned so that the hole was facing the front of the vehicle. Try turning that knob so the hole is facing downward.- peterj
- Post #7
- Forum: Engine & Drivetrain
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2011 Denali 6.2L Dual Exhaust Q- I've searched!
I just put the Magnaflow 12909 on my Denali today. Sounds great, no drone, not too loud under normal driving conditions but opens up from 3000 rpm's.- peterj
- Post #3
- Forum: Engine & Drivetrain
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Seafoam
I've seafoamed my 07 LTZ at around 90,000. I did notice a difference in performance but I think the engine wasn't too dirty as I drove it kind of hard. My wife's Jetta; on the other hand, showed huge improvement! There was a lot more smoke out of her car and she drives it pretty much in town.- peterj
- Post #22
- Forum: General Discussion
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Northwest new guy
Greetings all, I've lurked here for a couple of years and decided to join. I have a 2012 Yukon XL Denali and look forward to sharing some ideas and gathering input. Previous vehicle was a 2007 LTZ Tahoe and while that was a wonderful car, I really enjoy the 6.2 in the Denali. That's all...- peterj
- Thread
- Replies: 5
- Forum: Introduction
