your injectors should be under warranty for 200,000.i just had all of mine replaced before any mods were installed. i had to pay about 250.00 deductable. it may be worth it to remove intake or a chip if you take it to a dealer because g.m. wanted 2600.00 to replace them or you could always go aftermarket
All you could do is ask the dealer...if you don't get help from them, call the customer service line and see if they will help you out. Most guys with 04s have been getting them covered under the special policy on a case by case basis.
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