I'm Mad by The Dead Weather
Bass Tab

This is the clean bass part. Sounds like either synth or bass with effects doing other 
bass parts throughout, especially intro.

This is the main riff. Sometimes sounds like an open E added at end of riff
G|----------------|
D|----------------|
A|-7--7--5-7--5-7-|
E|----------------|

At 1:40, song changes into F
G|---|       G|---|
D|---|       D|---|
A|---|       A|-8-|
E|-1-|  or   E|---|

1:53
G|------------------------------|
D|-------------------------8----|
A|-10--10-10--8--10--10-10---10-|
E|------------------------------|

G|------------------------------|
D|------------------------------|
A|-10--10-10--8--10--10-10------|
E|--------------------------6---|

G|------------------------------|
D|-10--10-10--8-----10~-8-------|
A|-------------------------10---|
E|------------------------------|

G|----------|
D|----------|
A|-x-8--x-8-|
E|----------|

2:52 Goes back into E
G|--------------------|
D|--------------------|
A|-x-8--x-8--x-7--x-7-|
E|--------------------|

G|----------------------|
D|----------------------|
A|-7-7--5-7--5--7-5-----|
E|------------------7-0-|

Listen to the song for the feel and palm mutes. The basic idea of the riffs are there. 
Hope this makes sense. Have fun.