It seems as the temp. drops to the 60s or below, I have a rattle that shows up some where on the passenger side of my truck (99 SR5) any one know what this could be, it also goes away with weight in passenger seat?????????

 

Are the seat bolts loose?

I removed the passenger seat to add Jute, but when I re-installed the seat, I forgot to tighten one bolt. I rattled like waht you're describing.

Just a thought...

 

thats one thing I have not tried yet ! thanks

 

I have the exact same problem in my 1994 4Runner. Did you ever find out what resolved the issue?

Brad