Matt D

iTrader: (49)

Anyone know the weight difference between the two?

ls1ow

iTrader: (2)

i think 98 were the only year with a metal tank and 99-02 had the plastic and i think its around 10- 15lbs but i could be off on the weight

kp

iTrader: (34)

Metal tank weighs 22lbs, weighed mine myself, I cant imagine the plastic tank being much lighter. Matter of fact the aluminum nasty tank was only like 5lbs lighter then the steel tank I removed.

Matt D

iTrader: (49)

Thanks Kevin, can you confirm on the 99s having a metal or plastic tank?

ls1408cp

iTrader: (37)

I have been wondering the same thing myself. I am going to put a fuel cell in my car this winter and get rid of the metal one.

onfire

iTrader: (17)

My 99 has a plastic tank.

kp

iTrader: (34)

99+ are plastic. Few people have claimed to have metal tanks in 99s but since the evap setup is completely different I doubt GM had a few 'special' 98 PCMs done to control it. Every 99 I have ever seen had a plastic tank but never say never