Why is my 97 chevy Silverado c1500 whining?
For the past 20 years this truck has made a whining
noise and no body can figure it out. We have
changed almost every part on this truck and it still
whines. Any help?
Also it’s a 5.7L 350 vortec
Whining is usually alternator, power steering or transmission.
All 3 have been changed in the past 5 years
Try leaving the wife at home.
Pull the serpentine belt off and briefly start it. If the noise stopped then it is something that the belt turns.
Yes but when I️ stop accelerating it stays the same pitch
TWENTY YEARS!!! lol thanks for being the best post I have read this year!
Mine started whining when my IAC valve started to go bad... Its basically a tiny gap in the plunger that whistles while accelerating. Got pretty loud a few times too, but made it easier to diagnose. Easy screw out fix and replace right on the left side of throttle body.
Mine whines too. Thought it was the alternator took off the belt and still made the noise. Coming from the throttle body. Maybe a pump or valve or something in there. Going spray with some cleaners and check the lines.
So... were you able to find a solution? Please post an update ;)
