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John, GMC Technician
Category: GM
Satisfied Customers: 9176
Experience:  ASE MASTER TECHNICIAN/40 years experience
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2001 GMC Yukon: noisy..upon start..It eventually goes away after warm

Resolved Question:

2001 GMC Yukon XL with 39K. Starting to get a noisy valve sound, or tapping sound upon start up. It eventually goes away after warm up. Stuck lifter or could my aftermarket exhaust have any impact?
Submitted: 7 years ago.
Category: GM
Expert:  John replied 7 years ago.

Hello Jlady1969,

If your noise is a valve lifter the after market exhaust does not have any affect on this.This is a common problem that happens from time to time on the best of maintained vehicles.The repair for this is to replace the valve lifters,because finding the exact one is next to impossible.

Customer: replied 7 years ago.
About a 4 hour job to replace lifters at a dealership/repair facility?
Expert:  John replied 7 years ago.
Yes & change the oil & filter afterwards.
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