Try the customer assistance center number, that might help. However, if the supplier is having difficulties producing enough axles, there is not much GM can do. These suppliers produce axle for other companies and can only produce X number per day.
I feel for you, and would be peed off too if it was me.
If out of service for more than thirty business days in CO, you can enact the lemon law.
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Black Sheep Hummer Squadron
(ME TOO)
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