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Check Engine Light
2003 Chevy Tahoe diagnostic codes
2003 CHEVROLET TAHOE
2003 Chevy Tahoe V8 Four Wheel Drive Automatic
scan tool reading codes po171 and po174 system lean, what can I check now?
have the same problem?
Wednesday, December 24th, 2008 AT 4:33 PM
A vacuum leak could cause lean condition but on both banks that's unlikely. Low fuel pressure maybe causing have that checked
Friday, December 26th, 2008 AT 3:08 PM
to post a reply.
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