I have a 2005 chevy duramax lly and I have codes po206 and p2146 showing up on my scanner. Does anyone have any suggestions on what to do. My truck has no power and sounds like a Ford

 

1. Perform an injector balance test and check for cylinders 2 and/or 7 not contributing. Replace the injector wiring harness connector and install a support bracket from the service kit.

2. Refer to TSB #05-06-04-047B (03/14/2006).

3. If the problem is not isolated to cylinders 2 and/or 7, replace the wiring harness. Refer to TSB #06-06-04-026

 

You might also check with chevrolet they had a recall on this problem had mine done about 6 months ago