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Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 15726
Experience:  15 years GM master tech
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99 subrban has light knock until warm this started after

Customer Question

99 subrban has light knock until warm this started after changing alternator to 140 amp
Submitted: 1 year ago.
Category: Chevy
Expert:  Gary replied 1 year ago.

with the hood open and you hear the knock any idea of the area of the knocking sound ?

Expert:  Gary replied 1 year ago.

how are you making out ?