The main riff is just  Gsus4, G, C, Csus4
Intro and Chorus
   hot blooded     check it & see  
  Gsus4  G            C     Csus4
E---3----3--3----------------------
B---3----3--3---------5--5----6----
G---5----5--4---------5--5----5----
D---5----5--5---------5--5----5----
A---5----5--5---------3--3----3----
E---3----3--3----------------------
I play it as barre chords, but after seeing the band in concert (from 
lousy seats, mind you), I believe they play it in the open position, 
which would look something like below.
E---3----3--3--------0--0----1---
B---1----1--0--------1--1----1---
G---0----0--0--------0--0----0---
D---0----0--0--------2--2----2---
A---X----X--2--------3--3----3---
E---3----3--3--------------------
The verse is a nice simple power chord progression - G,F,C
    G             F        C        G
E--------------------------------------
B--------------------------5--5--------
G---------4--4----2--2-----5--5--------
D---5-----5--5----3--3-----5--5-----5--
A---5-----5--5----3--3-----3--3-----5--
E---3-----3--3----1--1--------------3--
Then, before the chorus is something like this, played a few times. The 
last time it's played, there is a fast little riff which I don't have.
 it's up to you    we can make a secret
  rendezvous
    D     C D      Em        C
E-----------------------------------
B---7-7-7-5-7------8--8------5--5---
G---7-7-7-5-7------9--9------5--5---
D---7-7-7-5-7------9--9------5--5---
A---5-5-5-3-5------7--7------3--3---
E-----------------------------------