"GM done the most"??? Well, maybe, but that's not my experience.
We bought a 2003 Chevy Express van (same thing as a GMC Sierra)
with a 6L Vortec engine (the big one). It doesn't cause any problems
on 2m/440 FM, but for HF, yikes. It's a killer on 15m, where it seems
to be the worst, but it is bad on 6m on down. Thankfully, the TS-480
noise blanker takes care of most of it, but it is pretty bad. I went
through
the grounding stuff, put on the fancy spark plug wires, all to no avail.
I don't do mobile HF much, but if I did, it would be annoying.
Even though I bought it new, the dealership was most UNhelpful
when I mentioned the problem. Needless to say, I won't be buying
a vehicle there again.
Dave N0RQ
-----Original Message-----
As of 5-6 years ago GM had done the most to handle ignition and computer
noise, and were willing to talk mobile radions...they even did a mobile RFI
presentation at Dayton a few times. But having walked away from a 40 MPH tee
bone into the driver's door of my first 4 Runner I felt some loyalty to buy
another. If GM's noise is still low, I'd consider them for the next SUV from
a ham radio perspective.
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