Well, is a squeak or a rattle? I have heard the rattle noise on other JKs, but never heard the heat shield squeek. The heat shield is not in the rear of my JK, but up front near the engine...bushings on shocks?
08 JK 23S - Colorado Jeep Club No. 204
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"It takes a special kind of stupid to believe criminals will follow gun laws."
I do not consider myself a smartass. I point out the obvious, search for the truth, and speak fluent sarcasm. I am, by experience, an accomplished curmudgeon.