I got my HHR tested in 2022, it failed after getting a new catalytic converter and I got a 2 year waiver. Thread here:

https://www.chevyhhr.net/forums/prob...n-65064/page3/

I hardly drove it, but recently I drove it everyday (4 days so far) to hopefully get the computer to collect data for the test. One problem I think I might have is the fuel gauge stays at the maximum level and there's something wrong with it. I've been putting gas into the tank, usually from a 5 gallon gas can I fill when I take my Camaro to the gas station. I read some threads on this forum about the fuel level sending unit not working. I'm wondering if I can get the test done with this problem or it needs to be fixed first. I need to get the test done by March 6, 2024, but I can get an extension if I need to.

 

When were the codes cleared? If you go to your favorite big box auto parts store (or your own code reader) they can check the I/M readiness (what OBD tests remain), Federal law lets 1 test un done, that is usually the EVAP test, it takes about 10 days of normal use. Most of the other tests get run within a day or so.
I don't think the fuel gauge has any bearing on inspection, unless it causes a code.

 

Hey Don. Read the OP’s link to his other thread. You tried to help him in that one but it went nowhere.

 

You really should have got this fixed during the past 2 years. I've attached a PDF for I/M readiness monitor requirements in Maryland.

 

OK, I give up.

 

I was thinking of getting a tester. I had a 1987 Buick Century that would fail the emissions test each time it got tested until the mechanic decided to change four of the sensors and then it passed. It failed a couple times and I would get some work done on it, get it tested and then get a waiver.

The main thing I'm worried about is if the fuel gauge problem will interfere with the test. I took the HHR to be repaired two years ago and for some reason they didn't or couldn't fix it so it would pass the test. I did go to two different stores where they tested it and the results were discussed in the link I gave in the first post.

 

1987 did not have OBD2 , so whatever may have been the case on that car is not relevant to this car.
Fuel gauge HAS NOTHING TO DO WITH EMISSIONS.
IF THERE ARE NO CODES AND THE I/M READINESS IS OK YOU SHOULD PASS.
Find a real mechanic.

 

I took the HHR to a mechanic that was listed in the list of CERFs that the MVA gave me. If I wanted to get my own code reader which one would you recommend? When I went to Advance Auto two years ago the man that tested my HHR said the tester said something about an oxygen sensor. Someone mentioned an oxygen sensor and possible cracked elbow in my first thread on emissions. Maybe I can fix that myself.

 

Talk to local people, so you can find a good local mechanic. Like donbrew said in your other thread, if you're not going to fix it yourself, then you don't need a code reader. After AutoZone told you about the oxygen sensor, did you take it to a shop for diagnosis and repair?

 

I took it to Rising Sun Motors after the emissions test failed because it was on the CERF list and they changed the catalytic converter. They didn't say anything about the oxygen sensor.