Hey Moreno!
Question are these factory original RS headlights or aftermarket replacement systems?
If aftermarket which manufacturer and control box?
If factory original it could be the wiring, ground or switch. Take a look at this FAQ: FAQ67
Why do my headlight doors open but not close?
This is often caused by a dirty/damaged headlight switch or failed relays. However, first make sure the ignition switch is on. By design, the doors will open regardless of the ignition switch position but will only close with the ignition switch on. If the headlight switch is OK follow this trouble shooting procedure taken from the Camaro RS Wiring Diagram Manual: First make sure your ignition switch is on. If there is no voltage at green wire terminal of relay #1 (use test light to ground), check voltage at orange wire terminal of relay #1, if voltage is present, replace relay #1, if voltage is not present, check for open circuit breaker or wiring. If there is no voltage at the brown wire terminal of relay #2, then relay #2 and relay #3 (they are wired in parallel) are not actuated. Check for 12 volts across the two-terminal connectors of both relays (use one test lead at each terminal of connector), if voltage is present, replace relay #2, if no voltage, check wiring back to the ignition switch making sure the diode is not open or in backwards. If voltage is pulsating, due to action of circuit breaker, then relay #2 has pulled in but relay #3 has not. Check for 12 volts across the two-terminal connector of relay #3 (one test light lead at each terminal of connector). If voltage is present, replace relay #3, if no voltage, check wiring.
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