window motor draws a lot of power

[knogoodidleft]

When I roll down or up a window I can see my lights dim, and if I roll down all 4 at once, which I do everyday, it drains a lot, much much more than my 800W RMS amplifier does...wtf? Its always done it, just wondering if anyone else has this issue.

[Tdragone]

What year and engine?
I ask for engine because of the battery matched to it..

[knogoodidleft]

05' 5.3L crewcab

[tykrz]

My two trucks also do it. Must be normal

[borgt]

Every vehicle with power windows that I've ever owned has done that. Since we're talking a few seconds of power drain, I don't think it's an issue.

[knogoodidleft]

wasnt really worried about the charging system, but if there was something making the motors work harder, i dont know. But this the first vehicle that ive seen do it, it cuts the headlights brightness by at least 25% at night, none of my friends car do it at all

[tykrz]

Yup, mines the same, noticeable drop in light output and also lowers the voltmeter, doing that since brand new, and with only one power window being brought up or down. Normal

[kklagge]

grease the window tracks to make the window slide easier...works on our work trucks

[Eagle70ss]

My 02' only does it when I stay on the button too long and bind up the motor after the window is already all the way up..

[silverado122775]

yea same here.. the light swill dim slightly when the windows are being raised or lowered but really dim when the button is held after the window is up.