Truck not running proper test to pass Inspection. New York.

Z71Silverado · December 9, 2013

So. I've been chasing this rabbit for about 2 months now. My truck was not running two test to pass the truck for inspection. The test that the truck is not running is the catalytic converter test and the evap test for the gas tank. The other test have run and all pass. Two weeks ago I finally replaced the ecu as it was determined to be the last thing as to why the test aren't running. I drove it for 150 miles and it's still not passing with the new ecu. Does anyone has any input that could help me? I am currently driving my truck around with no inspection just wondering when I will get pulled over. No engine light, no codes, this makes no sense. Even the dealer was stumped. Please help. Any help is very much appreciated. Thanks.

Z71Silverado · December 9, 2013

I want to add that I call it a "new" ECM but in fact it's just a refurbished ecu that I bought from a company that specialized in ECM's

Chris · December 9, 2013

Mine hasnt ran evap. Still passes inspection. We are allowed 1 incomplete. My catalyst test wouldn't complete and I had to change a cat

Z71Silverado · December 9, 2013

Mine hasnt ran evap. Still passes inspection. We are allowed 1 incomplete. My catalyst test wouldn't complete and I had to change a cat

How did you know which was need to be replaced?

Z71Silverado · December 9, 2013

Also. How can my dealer not have known this? Do they have idiots working there? If it was up to them, I would have bought a new ECM from them for $600 and it still wouldn't have fixed the problem.

Z71Silverado · December 9, 2013

Considering buying this tonight but waiting for more input.

This is a direct fit catalytic converter by Maremont. Any opinions on this brand?

Z71Silverado · December 9, 2013

Would an EvanFischer type converter be better?

Chris · December 10, 2013

Where qre you from?

Z71Silverado · December 10, 2013

New York.

Z71Silverado · December 10, 2013

100 views and no other other input?

sillywillie07 · December 10, 2013

The truck will not run evap or {gas tank} test if the fuel gauge is at 1/4 or lower and 3/4 and above. Evap is the hardest to set most times. Converter teat should pass if you let it set over night and drive it the next day. The temps outside can't be to cold or it will not run. Good luck!!!

Chris · December 10, 2013

Has new york started accepting cali standards. If not you will be fine with those cats

Z71Silverado · December 10, 2013

The truck will not run evap or {gas tank} test if the fuel gauge is at 1/4 or lower and 3/4 and above. Evap is the hardest to set most times. Converter teat should pass if you let it set over night and drive it the next day. The temps outside can't be to cold or it will not run. Good luck!!!

Well it's winter here and it's going to be highs of 30 and lower for the next four months. Are you telling me that it won't run the test until spring? That doesn't sound right.