Three speakers not working

2002 GMC Sonoma Stereo Wiring Information

Radio Battery Constant 12v+ Wire: Orange
Radio Accessory Switched 12v+ Wire: Yellow
Radio Ground Wire: Black
Radio Illumination Wire: Gray
Stereo Dimmer Wire: Brown
Stereo Antenna Trigger Wire: Pink
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue


..

Pull speakers and test one by one.

fade setting?

Check the speakers if they work. Connect the speaker terminals using a short wire to a 1.5 volt battery (AA or any dry cell batter) and listen if there's a thumping sound when the wires are connected to the battery terminals. If there's no sound, your speakers are busted. If there's a sound, check if the wires are okay. Use the same method with the battery with the wires from the back of your stereo. Make a small cut on the wire and attach the short wires you used earlier.

Could have damaged the speakers or the radio or both.
You could pull a door panel and connect a small used speaker to see if the radio is producing a feed to the door.

Section 01-09: Mirrors, Rear View 1999 Taurus/Sable Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 06/25/1998 Mirror, Power-Outside Rear View Removal

1. Disconnect battery ground cable (14301).
   

1. Remove front door trim panel (23942). Refer to Section 01-05.
   

1. Remove radio speaker grille from cover assembly by squeezing or pinching between thumb and index finger.
   

1. Remove two screws from cover assembly.
   

1. Disconnect outside rearview mirror wiring connector (C515-LH; C615-RH). Remove wiring guides as necessary.
   

1. Remove three outside rear view mirror retaining nuts. Remove outside rear view mirror (17682) while guiding wiring and connector through hole in door.
   

Item Part Number Description 1 17682 Outside Rear View Mirror 2 N621906-S36 Nut (3 Req'd) 3 F8DB-17D699-
AAW Cover Assembly Rear Substrate-LH 3 F8DB-17D698-
AAW Cover Assembly Rear Substrate-RH 4 N808968 Screw 5 F8DB-18B984-
AAW Speaker Grille-Standard (No Badge)-LH 5 F8DB-18985-
AAW Speaker Grille-Standard (No Badge)-RH 5 F8DB-18K901-
BAW Speaker Grille-Mach-LH 5 F8DB-18978-
BAW Speaker Grille-Mach-RH 5 F8DB-238A35-
AAW Speaker Grille-Blank (No Speaker)-LH 5 F8DB-238A34-
AAW Speaker Grille-Blank (No Speaker)-RH A - Tighten to 6-8 Nm (54-70 lb-in) ------------------
Trim Panel, Door Front
Removal

1. Remove cover behind inside door handle.
   

1. Remove screw from bottom of pull cup retaining front door trim panel to front door (20124).
   

1. Remove three screws retaining front door trim panel to front door.
   

1. NOTE: Do not attempt to remove more than one pushpin at a time.
   
   Using Rotunda Windshield and Molding Trim Removal Kit 107-R0401 or equivalent, remove the door trim panel by pulling one door trim panel pushpin at a time from the inner door skin.
   

1. Disconnect electrical connectors as necessary. Refer to Section 01-14A.
   

Installation

1. Follow removal procedure in reverse order.
   

1. Replace all pushpins with new pushpins (N808994-S).
   

Front Door Trim Panel

Hello! Pull the radio...There is a connector with the following speaker wire colors...

Front driver door + Red/Green
Front driver door - Brown/Black
Front pass. door +Blue/Green
Front pass. door -Gray/Black

Left rear+ Blue/Yellow
Left rear - Gray/White
Right rear + Red/Yellow
Right rear - Brown/White

If the vehicle is an EX the left and right Tweeter's are the same as the Front drivers/Passenger door speakers and merely connect to them...

Guru...saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

sound like the head unit's out put mosfet is going bad, but i have also ran in to this problem when it was a speaker wires shorting out. so first check the connection on your rear speakers.

check wiring on passengers side near the rear hatch speaker, the rear door speakers are run through them also. i had the same problem and it was a unplugged connector at that location

Hi,

2001 Dodge Caravan Performance Features -3,301 cc 3.3 liters 6 V engine with 93 mm bore, 81 mm stroke, 9.3 compression ratio, overhead valve and two valves per cylinder
-Unleaded fuel
-Fuel economy EPA highway (l/100km): 9.8
-Multi-point injection fuel system
-Main 76 liter unleaded fuel tank
-Power: SAE and 134 kW , 180 HP @ 5,000 rpm; 210 ft lb , 285 Nm @ 4,000 rpm
2001 Dodge Caravan Handling & Driving Features -ABS
-Two disc brakes including two ventilated discs
-Spacesaver steel rim under body spare wheel
-Strut front suspension with stabilizer bar independent with coil springs , beam rear suspension with stabilizer bar rigid with leaf springs
2001 Dodge Caravan Exterior Features -Body side molding
-Front and rear body color bumpers
-Driver and passenger power heated black door mirrors
-External dimensions: overall length (mm): 4,803, overall width (mm): 1,996, overall height (mm): 1,750, wheelbase (mm): 2,878, front track (mm): 1,600, rear track (mm): 1,626 and curb to curb turning circle (mm): 11,460
-Complex surface lens halogen bulb headlights
-Double sliding minivan side door
-Remote control operation opening rear ¼ windows
-Metallic paint , gloss paint , pearl paint
-Fixed rear window
-Tinted glass on cabin, rear and side
-Weights: curb weight (kg) 1,842, gross trailer weight braked (kg) 907 and max legal load (kg) 772
-Windshield wipers with variable intermittent wipe
2001 Dodge Caravan Interior Features -Air conditioning with rear outlet
-Fixed mast antenna
-Manufacturer's own audio system
-Automatic drive indicator on dashboard
-Below seat storage under passenger seat
-Cargo capacity: all seats in place (liters): 433, all seats removed (liters): 4,154 and third row seats removed (liters): 1,291
-Clock
-Dashboard full console with open storage box
-Delayed/fade courtesy lights
-Cruise control
-Front seats, rear seats and 3rd row seats cup holders
-Door ajar warning
-Door pockets/bins for driver seat and passenger seat
-Floor covering: carpet in load area
-Driver and passenger front airbag
-Bucket seat
-3-point reel height adjustable front seat belts on driver seat and passenger seat
-Front seat center armrest
-Glove compartment
-Height adjustable two head restraints on front seats, rear seats and 3rd row seats
-Internal dimensions: front headroom (mm): 1,011, rear headroom (mm): 998, front hip room (mm): 1,440, rear hip room (mm): 1,722, front leg room (mm): 1,031, rear leg room (mm): 930, front shoulder room (mm): 1,588 and rear shoulder room (mm): 1,643
-Low fuel level warning
-Low washer fluid level warning
-Internal button power locks
-Power steering
-Front power windows with one one-touch
-Front reading lights
-3-point reel height adjustable rear seat belts on driver side and passenger side
-Bench one-piece two rear seats
-Rear view mirror
-Upgraded cloth/velour seat upholstery
-Seating: seven seats
-Six speakers
-Plastic steering wheel
-Tachometer
-3-point reel third row seat belts on driver side , 3-point reel third row seat belts on passenger side , lap static third row seat belts on center side
-Front facing bench removable one-piece third row seats with capacity three
-Driver and passenger vanity mirror
-Ventilation system with recirculation setting
Thanks.