Question about 1989 Chevrolet Suburban

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Truck squeaks at start-up and goes away after 2 seconds...at times when I'm driving it will squeak and the voltage meter drops below 14 while squeaking. get off the gas and it stops and everything goes back to normal. I have no fluid leaks.I have changed all pulleys except for the power steering pulley/pump. The new serpentine belt is show spots of glazing and I not sure about driving any distance for the fear of breaking down....what's going on with my truck

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  • Chevrolet Master
  • 14,337 Answers

Your serpentine belt tensioner may be bad,not holding enough tensioner and not letting your alternator keep a charge on your battery,get some one to sit in your vehicle,open hood,have them start it while you watch the belts turn and have them rev the engine up to see if the belt turns loosely.another thing to look at is the A.C.compressor locking up .Power steering pump could be locking up,just check it out while it's running and see.

Posted on Jun 15, 2017

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Posted on Jan 02, 2017

drsinister69
  • 2317 Answers

SOURCE: squeaking noise in engine. not serpentine belt.

You might have a dry bearing in the alternator. I've had a squeaking noise from them.

Posted on May 15, 2010

Testimonial: "thanks! the noise is not constant. it cycles with the rpm's. it like squeak-squeak- squeak and progresses as the rpm's increase."

emissionwiz
  • 75822 Answers

SOURCE: 1999 suburban squeaks at startup then fades away

Check the belt alignment and also check for other worn bearings. Crankshaft damper may be coming apart.

Posted on Sep 04, 2012

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