This is THE tab!!!! I was fed up of seeing so many tabs that didn’t sound right for this legend of a song, so I’ve done one myself. But this one is 100% CORRECT for sure. (other than the chorus it's straight frm the tab book) (the real chorus didnt sound right)
  You just need to listen to the song for the timing etc.

Intro

E|-------------------------------------------------------|
B|-------------------------------------------------------|
G|----------1-------------------------1------------------|
D|----------------------4-------------------------4--2---|
A|--0--1--2-----0--1--2------0--1--2------0--1--2--------|
D|-------------------------------------------------------|

Verse 1 & 2

E|--------------------------------------------------------|
B|--------------------------------------------------------|
G|--------slide---4-4------2-2---slide--------------------| x2
D|-2-2----2-1-2---4-4------2-2---2-1-2--------------------|
A|-2-2------------2-2------0-0----------0-----------------|
D|-2-2--------------------------------------6----4--------|

Pre-Chorus

E|----------------------------------------------|-----------------|
B|----------------------------------------------|-----------------|
G|--------------------------------------6-----6-|------2-------2--|x2
D|-----2-------2-------2-------2--------6-----6-|------2-------2--|
A|-----2-------2-------2-------2----4-4-4-4-4-4-|0-0-0-0-0-0-0-0--|
D|-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2--------------|-----------------|
                                                [ don’t play 2nd time round]
Chorus

e--------------------------]
B--------------------------]
G------4--6----------------]
D---2--4--6---6--8--6--8---]x2
A---2--2--4---6--8--6--8---]
E---0---------4--5--4--5---]
this is the corrected version. (cheers geetardude1)

Interlude  

E|--------------------------------------------------------|
B|--------------------------------------------------------|
G|--------------------------2-----------------------------|
D|-2-2--2-2---2---2-2--2-2--2---2-2--2-2---2---2-2--2-2---|
A|-2-2--2-2---2---2-2--2-2--0---2-2--2-2---2---2-2--2-2---|
D|-2-2--2-2---2---2-2--2-2------2-2--2-2---2---2-2--2-2---|

Bridge

E|-----------------------0-------------|
B|-------------------------------------|
G|-----9-------9-----------------------|x2
D|---9---9---9---9----6----6-----2-----|
A|-7-------6--------4----------0---0---|
D|-------------------------------------|
Then
E|-0---0---2---2---0---0-hamer--0--hamer-|
B|---0---0---0---0---0---0---2-----2---0-|
G|---------------------------------------|x2
D|---------------------------------------|
A|---------------------------------------|
D|---------------------------------------|

Bridge 2
Part 1                            Part 2  
E|----------------------|         E|---------------|
B|----------------------|x2       B|---------------|
G|----------------------|gap      G|---------------|x1
D|-0--2--2---2--0--2--7-|then     D|-0-2-2---2-0-2-|
A|-0--2--2---2--0--2--7-|x1       A|-0-2-2---2-0-2-|
D|-0--2--2---2--0--2--7-|         D|-0-2-2---2-0-2-|

Part 3
E|----------------------------------------------------------------|
B|----------------------------------------------------------------|
G|---------------------------------------------7-7-7-7-7-7-7-7-7-7|
D|---------------------------------------------7-7-7-7-7-7-7-7-7-7|
A|-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5|
D|-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0—0-0-0-0-0-0-0-0-0-0-0-0|

Outro
E|----------------------------|
B|----------------------------|
G|----------------------------|
D|--2--2------------2-2-------|
A|--2--2------------2-2-------|
D|--2--2------------2-2-------|

Order

Intro (x 2 without Dist. then x2 with Dist.)
Verse 1 & 2
Pre-Chorus
Chorus
Intro (x 2 without Dist. then x2 with Dist.)
Verse 1 & 2
Pre-Chorus
Chorus
Bridge
Bridge 2 (part 1) x2
Bridge 2 (part 2) x1
Bridge 2 (part 1) x1
Bridge 2 (part 3) 
Intro x 2 
Outro