W8TVI
Full Access Member
I've done some searching, and I'll I can find related to the newer trucks and not NBS trucks.
My 2000 GMC Yukon XL SLT has the sunroof, and anytime I have it retracted (all the way to the rear), I get a buffeting (Helmholtz resonance) when I'm driving above about 50 mph.
If I vent any window it goes away, and if I just vent the sunroof (where it just lifts the rear of it up), it doesn't get any buffeting.
Does this mean the body vents are bad? I've heard one of them buzz when I had the subs up nice and loud, so I'd think that at least one was working.
Any ideas?
My 2000 GMC Yukon XL SLT has the sunroof, and anytime I have it retracted (all the way to the rear), I get a buffeting (Helmholtz resonance) when I'm driving above about 50 mph.
If I vent any window it goes away, and if I just vent the sunroof (where it just lifts the rear of it up), it doesn't get any buffeting.
Does this mean the body vents are bad? I've heard one of them buzz when I had the subs up nice and loud, so I'd think that at least one was working.
Any ideas?