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

1 Answer

42,315

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 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,850
#2 John Saffrahn
John Saffrahn
Reputation 3,440
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,030
View All

Related Models For Sale

Used Ford F-150
2,401 Great Deals out of 210,254 listings starting at $895
Used Chevrolet Camaro
136 Great Deals out of 35,101 listings starting at $1,995
Used GMC Sierra 2500
162 listings starting at $2,400

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
25 Great Deals out of 39,014 listings starting at $22,261
2016 GMC Sierra 1500 For Sale
79 Great Deals out of 3,740 listings starting at $17,995
2015 GMC Sierra 1500 For Sale
131 Great Deals out of 4,007 listings starting at $14,799
2014 GMC Sierra 1500 For Sale
138 Great Deals out of 4,351 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
75 Great Deals out of 2,251 listings starting at $8,090