This is the way I play Wash. I don't know if it's 100% accurate, but it's pretty close.
NOTE: I do not take credit for this tab, this was tabbed by a guy (I forget his name and email).
-|-3-----3--------3-----|--------------------------|---------------------|----|
-|-3-----3--3-----3-----|--------------------------|--------3-------3----|----|
-|-0--0--0--0-0-0-0--0--|-10\--------------10------|--------3---3-3-3-3--|----|
-|-0--0-------0-0-0--0--|------x-/---x-\------12^--|--------5---3-5---5--|----|
-|-1--------------------|------x-/---x-\-----------|---------------------|----|
-|-3--------------------|--------------------------|---------------------|----|
Intro, G1(w/improv) 4x G2 G3
-|--3------3---------3------|------------------------------------------|------|
-|--3------3---3-----3------|-3-3-----3-----3-3-3----------3--3--3-3---|------|
-|--0---0--0---0-0-0-0--0---|-3-5-----3-----3-5-3----3-----3--3--3-3---|------|
-|--0---0--------0-0-0--0---|---------5--------------3h5---------------|------|
-|--1-----------------------|------------------------------------------|------|
-|--3-----------------------|------------------------------------------|------|
Verse, G1(w/variations) 8x G2
-|------------------3-3--|----3-3-------------3-3---------3-3--------3--|-----|
-|-----3-3-3-3-3----3-3--|----3-3-------------3-3---------3-3--------3--|-----|
-|-3-3-3-3-3-3-3-0--0-0--|----0-0-----3-3-3p0-0-0-----3p0-0-0--------0--|-----|
-|-3-3-3-3-3-3-3-0--0-0--|----0-0-------------0-0---------0-0------0-0--|-----|
-|-1-1-1-1-1-1-1----2-2--|----2-2-------------2-2---------2-2------2-2--|-----|
-|------------------3-3--|----3-3-------------3-3---------3-3------3-3--|-----|
Chorus, G1 4x G2
-|--3------3----------3------|-3---------------------------5-3---|------------|
-|--3------3---3------3------|-3---3-/--------3-3----------3-3---|------------|
-|--0---0--0---0-0-0--0--0---|-3h5-3-/--3-----3-5-5h6p5-3--3-----|------------|
-|--0---0--------0-0--0--0---|----------3-5----------------------|------------|
-|--1------------------------|-----------------------------------|------------|
-|--3------------------------|-----------------------------------|------------|
Verse, G1(w/variations) 12x G2
-|-17------17-----5--------------------------------|--------------------------|
-|-15------15-----3--------3-------3-3-3-----3-/---|--------------------------|
-|-15------15-----3----3-3-3-3-----3-5-5h6p5-3-/---|--------------------------|
-|---------------------5-3---5---------------------|--------------------------|
-|-------------------------------------------------|--------------------------|
-|-------------------------------------------------|--------------------------|
G2
[ Tab from: http://www.guitaretab.com/p/pearl-jam/170001.html ]
-|------------------3-3--|-----------------3----------------------3--|--------|
-|-----3-3-3-3-3----3-3--|-----------------3--------------3-------3--|--------|
-|-3-3-3-3-3-3-3-0--0-0--|-3-3-3-3-3-3p0-0-0--3-3-3-3-3-3---3p0-0-0--|--------|
-|-3-3-3-3-3-3-3-0--0-0--|-------------------------------------------|--------|
-|-1-1-1-1-1-1-1----2-2--|-------------------------------------------|--------|
-|------------------3-3--|-------------------------------------------|--------|
Chorus, G1 4x G2
-|----------3-----------------3--|--------------------------------------------|
-|----------3----3-3-3--------3--|--------------------------------------------|
-|---3p0-0--0----3-3-3-3p0-0--0--|--------------------------------------------|
-|----------0-----------------0--|--------------------------------------------|
-|----------2-----------------2--|--------------------------------------------|
-|----------3-----------------3--|--------------------------------------------|
G2
-|---3---------5-----|-------------------|--15-----17---|-15---|--|
-|---3---------5-----|-------------------|--15-----17---|-15---|--|
-|---3---------5-----|-------------------|---/------/---|--/---|--|
-|---/---------/-----|-------------------|---/------/---|--/---|--|
-|---/---------/-----|-------------------|---/------/---|--/---|--|
-|-------------------|-------------------|--------------|------|--|
Verse, G2 12x <--slow trem. pick--------------------------| 2x
-|------------------3-3--|-----|---------------------3---|--------------------|
-|-----3-3-3-3-3----3-3--|-----|-------3-3-3-3-------3---|--------------------|
-|-3-3-3-3-3-3-3-0--0-0--|-----|-3-3-3-3-3-3-3-3p0-0-0---|--------------------|
-|-3-3-3-3-3-3-3-0--0-0--|-----|---------------------0---|--------------------|
-|-1-1-1-1-1-1-1----2-2--|-----|---------------------2---|--------------------|
-|------------------3-3--|-----|---------------------3---|--------------------|
Chorus, G1 12x G2 (w/variations) 11x
-|-------3----------3----------------------------------|----------------------|
-|-----3----------3---6-3h6p3---3h6p3-----------3-3----|----------------------|
-|-5b6--------5b6-------------5-------5-3h5p3---5-3-0--|----------------------|
-|-----------------------------------------------------|----------------------|
-|-----------------------------------------------------|----------------------|
-|-----------------------------------------------------|----------------------|
Outro, G2
-|--------------------3-------------------------|-----------------------------|
-|-3-----------3------3-------------------------|-----------------------------|
-|-3-----------3------3-------------------------|-----------------------------|
-|---5-3---3-----5----/-------------------------|-----------------------------|
-|-------5---5--------/-------------------------|-----------------------------|
-|----------------------------------------------|-----------------------------|
trem.pick fade out...end
