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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29585
Experience:  GM Grand Master Technician 2007. 14 years experience.
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i have a 99 tahoe codes P0340,P0102 how do i fix running r

Customer Question

i have a 99 tahoe codes P0340,P0102 how do i fix running rough
Submitted: 8 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 8 years ago.
Welcome Todd. The p0340 is a camshaft position code. The po0102 is a mass air flow sensor code. Both of these share a fuse. Check the Eng1 fuse. If it is open, then you may have an oxygen sensor heater issue as well. Let me know what you find. Also let me know if you have a test light for some diagnosis if this is not the issue.
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Customer: replied 8 years ago.
I dont have vehicle here at this time but i will let you know as soon as i can thanks.Is there a heated o2 sensor that gm has had a problem shorting out more than others?
Expert:  GM Tech (Cam) replied 8 years ago.

In your year, none that I know of.