repeat P0171 P0327 P0332 P0174??

[marlio2009]

New to the forum, I recently had to replace knock sensors and wiring harness on my 2001 Tahoe. After completing job codes cleared and test drove for 30 miles. The next day the following codes came back...
P0171
P0174
P0327
P0332
Any solutions.....

 

[tonymac617]

Were you able to resolve these Trouble codes? What was the reasoning behind replacing the harness? was this a full vehicle harness? more info would help so that a forum member can try to pinpoint your issues and help you with the DTC codes.