Quote:
Originally Posted by Humble Leader
oof - this could be tricky. I will ask the obvious questions because details weren't in the original post.
what wheel and tire combo are you running? perhaps the tires you have aren't good in the rain and are hydroplaning - which is made worse by the suspension modifications you have
are you maybe getting water inside the rims throwing them off balance. maybe when you are slowing down or stop the water then come out of the rim
alignment good? is your trac light coming on when this happens? are you in 2HI or 4HI when this happens? does it make a difference.
if I was placing a wager, I'd say you have BFG KO2s which are known to be poor in wet weather and are hydroplaning / losing traction - the hill issues in your OP seem to offer a clue
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Interesting theories! Also great questions that I should have addressed up front - I'll respond here and also update the OP.
I originally had 275/70/17 BFG KO2 (e rated) and have since upgraded to 285/70/17 (c rated) that have maybe 30k miles on them (but still have significant tread depth). I have the original Trail wheels, no spacers. The issue has happened on both sets of tires (I hoped maybe it was a tire issue and the new ones would fix it). I don't notice any hydroplaning - yesterdays weather was especially wet with puddles everywhere.
The amount of rain or water on the road doesn't seem to make a difference. In the past I've been able to stop for gas or a break, and some combination of shutting the truck off, drive-park-reverse-drive, etc. seemed to make the problem go away. Yesterday that did not work.
The issue is only in 2hi. I did consider putting it in 4hi when it was happening yesterday but not at that speed. And it only happens at 65+.
My alignment should be fine - I have it checked every 10k miles (lifetime alignment) and have not found anything terribly out of spec. That said I am coming due for a check.
No traction lights or warnings of any kind when it happens.
Again, it's so infrequent that it's been really hard to diagnose!