Welcome...try GMpartsdirect.com; First check with a GM dealer and find out the date your vehicle went into service. The injectors are covered under the extended warranty of 7 years from the date the vehicle was first placed into service OR 200,000 miles, whichever comes first.
You will find many great sources of information here. They have helped me by giving great suggestions and advice. You may want to include details on your vehicle and location in a signature block on your threads. Also include mileage, symptoms etc. with your questions.
Again Welcome abord and good luck with your injectors.
I just had my injectors replaced under the warranty. It's very expensive with labor cost...Let us know along the way what you do to fix the problem. Take care!
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