2007 Chevy Silverado trouble codes

2007 CHEVROLET SILVERADO
22,000 MILES • V8 • 2WD • AUTOMATIC
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CRAIG CARRILLO
  • MEMBER
  • 1 POST
I replaced my front pads and installed a cold air intake now have 3 codes 1)c0561 2)p0171 3)p0174
Aug 3, 2008 at 11:09 AM
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MASTERTECHTIM
  • ✓Experienced Mechanic
  • 4,750 POSTS
code 171 and 174 are lean codes and are usually caused by a vacuum leak or dirty mass air flow sensor
Aug 3, 2008 at 11:14 AM
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