Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Sounds like your cleaner has wrecked the filter baskets in the injectors.
Some injectors can't handle these products.
I would pull the injectors out for off-car injector tech to look at.
Replacement could be on the cards.
Have you checked for any ECM codes stored?
Do you need any further help?
I hope my advice has been of assistance to you.
Fair enough, I'm not with you to help.
What was wrong with it?