what causes squealing sound on my 5.7L gmc motor even with all belting removed?

Asked by Apr 27, 2016 at 10:27 AM about the 1988 GMC Sierra 1500

Question type: Maintenance & Repair

Noise was there when I bought truck. Took serpentine belt off and noise is
still there. Makes no difference if belt is on or off

2 Answers

49,425

See if you can determine if the noise is coming from the front or rear of the engine. If front I would suspect something to do with the timing chain maybe rubbing on the timing cover. If at the rear of the engine I would suspect something to do with the starter or flexplate (flywheel). Does the noise change with engine RPM? If not check the heater a/c blower motor.

1 of 1 people found this helpful.

I have a 1988 gmc Sarah 1500 I get whining noises when I put it in reverse what is that caused from

Your Answer

Add photo

Related Questions

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,270
#2 John Saffrahn
John Saffrahn
Reputation 3,640
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,330
View All

Related Models For Sale

Used Ford F-150
378 Great Deals out of 9,669 listings starting at $995
Used Chevrolet Camaro
753 listings starting at $2,500

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
9 Great Deals out of 7,272 listings starting at $25,988
2016 GMC Sierra 1500 For Sale
17 Great Deals out of 207 listings starting at $21,988
2015 GMC Sierra 1500 For Sale
48 Great Deals out of 518 listings starting at $20,000
2014 GMC Sierra 1500 For Sale
21 Great Deals out of 447 listings starting at $17,950
2013 GMC Sierra 1500 For Sale
26 Great Deals out of 254 listings starting at $10,995

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.