On a 1994 Camaro Z28, the EGR (Exhaust Gas Recirculation) vacuum line can typically be found attached to the EGR valve, which is located on the intake manifold near the rear of the engine. The vacuum source for the EGR valve usually comes from the intake manifold itself, ensuring that it operates correctly under specific engine conditions. If you're troubleshooting or inspecting the EGR system, follow the vacuum line from the EGR valve back to the intake manifold for proper diagnosis.
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