Bass Speakers not working in my checrolet captiva ltz

Sounds like you blew your speakers.

Hi
Is there an amplifier in the car somewhere for the sound system? If the problem started when you lost bass to your rear speakers it sounds like the amplifier has developed a fault which would stop the bass coming through the speakers and could drain the battery depending on what fault it has
I hope this helps Nick

hi.sounds like speakers is broken

You should be using this sort of thing in a motor vehicle ,here in spain its a big fine and points on licence if the radio can be heard outside the car with the windows closed ,but?? needless it doesnt stop the boy racers i like a car to be quiet especially my jaguar if i hear any noise from more than 4 ft away i sort it straight away .But yes i had the noise when i was young with my 3 lt ford zodiac and a record player that played 45s ,memories ? if this is a rear big boom boxx speaker the check the connections inside the unit sounds like a loose wire thats all

have you had any speakers or bass boosters installed in your car that werent in the vehicle before you purchased. Watch for wiring issues or possibly even battery voltage issues.

Could be speaker fuse or fuses esp if played loud with bass turned up worst case is power transistors blown then you may as well scrap it considering cost of repair vs second hand radio. Look at wires coming out of back of radio to speakers for inline fuse holders push and twist to open.There could be a fuse in rear panel of radio. Sorry I can't tell you how to remove the radio

does the new amp you have have a hpf setting if so check to see if thats on, turn off the x-over so it will play both lpf and hpf, bass and treble. are all the speakers wired to the amp aswell, this is the only thing that would stop bass other than the head units settings.

If bass control and/or equalizer is set normally then the issue lies with the unit's amps. Go to link for replacement Crutchfield Car Stereo Speakers Home Theater Pro Audio 4k TV

THE FRONT DOOR SPEAKERS AND THE BASS SPEAKERS ARE BRIDGED IN THE AMPLIFIER. I WOULD START THERE.

wire connection problem. part of the wire might be broken/cut. check the wirings from the radios to the speakers.