Giant XTC Btm Brkt - which size / upgrade

Unknown
edited December 1969 in MTB workshop & tech
I think i may need to replace my bottom bracket (serious creaking!) on my Giant XTC se but i have no idea which size and what type to get,

generally when something breaks i try to upgrade, but just read Zinn and im more confused,

has anyone on here replaced the BB on this bike or similar and can recommend the correct size and reasonable upgrade,

my LBS fits internet bought components so i might be able save cash this way, if i know what to get !

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