PO227 PO332

[shawnlambert]

2002 silverado 2500 6.0....trying to pass smog, was getting knock sensor bank 2 code. Replaced both knock sensors (bank 2 definitley bad) put it back together and now po 332 po327 come up (low circuit or single sensor) on BOTH sensors now! Im going to check ohms at pins at harness at rear of intake today for appx 100K pin to ground. Read a lot about same problem, possibly pcm/ecm (not likely). Leaning towards wiring harness problem. Very frustrated..... Please help.

[txab]

Always replace the harness when replacing knock sensors

[shawnlambert]

Repalced knock sensor wiring harness. Still getting "low circuit bank 1 and bank 2" ??????? What else can I do?

[shawnlambert]

OK....2002 2500 silverado. Repalaced 2 knock sensors and wiring harness. NOW getting low circuit /single sensor codes....What to do next?

 

ALSO...A/C compressor will not turn on/engage....whats easy/quick check list?

 

Finally....gas gauge is intermittently showing no/low fuel then climbs back up to proper reading.....WHY?

[shawnlambert]

Hmmmmm.....anyone???? Possible computer problem? Now everytime I go out to my truck, battery is dead....computer right?

[gmtech4]

stop it ,!!!! you think pcm ,,,,,stop it !!!!! the truck needs to be diagnosed ,,,not by the internet

 

,,a/c is empty thats why it dont work

 

parasitic draw test for the dead battery

 

IPC is finished for the gauge(have battery issue resolved first )