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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15133
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevy 1500 Silverado LS 5.3L z71: 2001 Chevy Silverado 1500

Customer Question

2001 Chevy Silverado 1500 5.3l LS z71replaced pre cat sensors engine won't start if does run rough my backfire and last maybe 10 sec
Submitted: 1 year ago.
Category: Chevy
Expert:  Dave Nova replied 1 year ago.
Hello and thank you for trusting me with your question. My name is ***** ***** I will do my best to help you with your Chevy problem.
Did this problem exist before replacing the O2 sensors?