GM does have a a lot of trouble with injectors, not only that they fail electrically, but that they are not flow-matched at the factory. If one flows more or less than the rest, an incorrect amount of unburned oxygen will show up in the exhaust. Based on the oxygen sensor's readings, more fuel will be commanded by the Engine Computer, but it increases flow equally among all of the cylinders, even those that don't need more. The best way to avoid this is to buy remanufactured injectors because you will get a matched set.
87 bucks is fairly reasonable for a GM injector. When your mechanic buys them and installs them, you will get a warranty for parts and labor to replace them. If you buy them, which is like bringing your own food to a restaurant, and one fails, you will be charged again for the diagnostic time and the time to replace it. You will also have to find and order the replacement again.
$700.00 - 800.00 repair bills every six months are pretty common on newer cars, but it does seem kind of early to have a catalytic converter failure. If the catalyst melted from too much raw fuel and the resulting overheating, the Check Engine light should have been flashing. Is there any chance the converter is still under the emissions system warranty?
Sunday, September 27th, 2020 AT 6:19 PM