My 1994 gmc wont start after I changed out o2 sensor just befor cat

Asked by Oct 08, 2017 at 12:47 PM about the 1994 GMC Sierra 1500 C1500 SL Standard Cab LB

Question type: Maintenance & Repair

I just replaced my o2 sensor just in front of cat.
Now my truck turns over bet wont start. Any ideas

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