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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29570
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2003 chevy tahoe .Engine light came on,ran the code.

Customer Question

2003 chevy tahoe .Engine light came on,ran the code.Left bank running lean
Submitted: 8 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 8 years ago.
WelcomeCustomer It is very likely the drivers front oxygen sensor has cracked. I would swap it with the passenger front sensor and see if the code goes to the passenger side. If so, replace the sensor and get the calibration update from GM that prevents this from happening.