Driving from work today the engine light came on, it is 2000 GMC Sierra, out
of warranty with almost 50 000 km.
I got my OBD-2 software going, read one code, P0442 Evaporative emission
control system, small leak detected.
I was bit puzzled where to look for a problem, opened and retighten my gas
cap, just to convince myself that it was tight.
Opened the hood looked around, not much to see, I was looking for broken
hose or something.
Cleared the code, run the truck for a while no trouble code set again. Will
try it tomorrow on the way to work, at highway speed.
I think the engine light was set today at highway speed, at least when I
notices, if that makes any difference.
Anyone would have any experience on that and could give me a hint or two?
Thanks in advance,