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Old 07-10-2019, 09:54 AM   #3 (permalink)
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Rvn4me's Avatar
Join Date: Jun 2016
Location: MI.
Posts: 2,444

Originally Posted by Cjsvirginia View Post
Now ck engine light comes on when towing off when not towing so the computer says Knox sensor?Do I need to get this fixed right away?
What should I expect to pay?
Since you just bought it maybe take it back and have them fix it for free.
What is your code?
Do you mean NOx (nitrogen oxide) Sensor?
Or do you mean CAMSHAFT POSITION SENSOR also known as (Knock Sensor?
Your NOx Sensor is $198.48 + Labor.
Go to your favorite parts store to have your code read and report back.

This was for 2010 & 2011
On some 2010-2011 model year Chevrolet Express and GMC Savana vehicles equipped with a 6.6L diesel engine (RPO LGH) and 2011 model year Chevrolet Silverado and GMC Sierra 2500/3500 series vehicles equipped with a 6.6L diesel engine (RPO LML/LGH), the nitrogen oxide (NOx) sensor may fail due to contamination between the terminals in the sensor and the wire interface. The contamination may cause the NOx sensor signal to become unstable and/or oscillate which may cause a malfunction indicator light to illuminate.

Special Coverage Adjustment
This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.

Last edited by Rvn4me; 07-10-2019 at 10:10 AM.
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