Its on the right far side of the engine, usually you need to remove the big air intake hose to get to it. Check the tensioner arm, usually they are worn out and will have front to back play.
I have a 2003 Silverado pick up, I have lost power to the entire passenger side - power door locks,...
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I have a 2003 Silverado pick up, I have lost power to the entire passenger side - power door locks, power seat, heated seat, mirror, etc. keyless remote will not work either.