If your talking about the vertical alignment, there are setting screws on the back of the headlight assy. It looks like a 1/4" head bolt with a straight slot in in it and a 3/4" wide black or grey large serrated plastic washer under the head of the bolt. If you need dimensions then do a search on "www.siennaclub.org"
The 2004 Toyota Sienna has 24 valves.
The 2004 Toyota Sienna has a V6 engine.
The 2004 Toyota Sienna has a 5-speed automatic.
The 2004 Toyota Sienna is a gas-powered vehicle.
What parts are needed for tune up for a 2004 toyota sienna
The 2004 Toyota Sienna's turning circle is 36.8 ft..
The 2004 Toyota Sienna runs on regular unleaded.
The 2004 Toyota Sienna is 16 ft. 8 in. (200 in.) long.
The 2004 Toyota Sienna has a 13.3 degrees angle of approach.
The height of the 2004 Toyota Sienna is 5 ft. 8.9 in. (68.9 in.).
The 2004 Toyota Sienna has a drag coefficient of 0.30 Cd.
The 2004 Toyota Sienna has double overhead cam (DOHC).