my 2004 silverado 5.3 is making a high pitched swell from the belt and pulley system . It sounds like it the ac compressor kicking on and off just with lots of noise ? tentioner or compressor ?

Asked by Oct 22, 2016 at 03:01 AM about the 2004 Chevrolet Silverado 1500 LS Crew Cab 2WD

Question type: Maintenance & Repair

3 Answers


Locating a noise is one of the hardest things to find. You need to go step by step and try different things. First change tge belt and see wgat hapoens, if the noise is still there change the tension. Its not normal for a A/C compressor to turn on and off fast, you may be short your refrigerant charge.


Remove the belt aND spin each of the pullies ,alternator etc. Separately .most of the time on those it'll be both idler and tensioner pullies they aren't the best designed and are a regular issue also the alternators on those have a weak /cheap front and rear bearing that also makes a hug pitched screech /chirp .if you spin the the alternator freehand you can usually hear that same.noise . I have 4 GMCS I just change all 3 if alternator is making noise as a gonna hafta do it anyway kinda thing. They don't make things like they used to ..Good luck


Oh sorry as Joe Mon mentioned if your A/C is short cycling it is either low in freon or low side pressure switch is going bad . Bet on low freon .lol ..also of your high pitched squeal is excessively loud and hurts your ears take a.look at Ac clutch .if it's bad it can make.a.racket .yanno just before it just quits working all together .lol

Your Answer

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 158,484 nationwide Silverado 1500 listings starting at $1,000.


Chevrolet Silverado 1500 Experts

  • #1
    John Carson
  • #2
  • #3
    Andrew Olsen
View All

Related Models For Sale

Used GMC Sierra 1500
1,176 Great Deals out of 62,309 listings starting at $1,995
Used Ford F-150
3,154 Great Deals out of 231,768 listings starting at $1,300
Used Chevrolet Silverado 2500HD
428 Great Deals out of 31,574 listings starting at $2,500
Used Dodge Ram 1500
350 Great Deals out of 10,829 listings starting at $1,988
Used Toyota Tundra
645 Great Deals out of 36,739 listings starting at $1,500
Used Toyota Tacoma
582 Great Deals out of 42,014 listings starting at $2,500
Used Chevrolet Tahoe
852 Great Deals out of 40,103 listings starting at $1,900
Used Chevrolet Colorado
340 Great Deals out of 42,643 listings starting at $1,299
Used Ford F-250 Super Duty
441 Great Deals out of 47,982 listings starting at $695
Used GMC Sierra 2500HD
129 Great Deals out of 14,906 listings starting at $3,259
Used Ford Mustang
340 Great Deals out of 42,823 listings starting at $1,488
Used Nissan Titan
333 Great Deals out of 22,024 listings starting at $1,995

Used Cars For Sale

2018 Chevrolet Silverado 1500 For Sale
10 Great Deals out of 84,075 listings starting at $19,417
2017 Chevrolet Silverado 1500 For Sale
262 Great Deals out of 14,843 listings starting at $16,439
2016 Chevrolet Silverado 1500 For Sale
278 Great Deals out of 7,075 listings starting at $16,777
2015 Chevrolet Silverado 1500 For Sale
465 Great Deals out of 11,652 listings starting at $13,775
2014 Chevrolet Silverado 1500 For Sale
483 Great Deals out of 10,662 listings starting at $9,300

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.