Why did all windows and power sunroof stop working at the same time?

SOURCE: Power Windows & Sunroof - 2001 Chevy Blazer

start by checking the fuses

SOURCE: Power windows and Power side mirrors Will not work.

i have had this issue before all i had to do is do a new ground, jumped the safety window lock, as well as expanding the metal clips in the wire con.

SOURCE: No power to radio, windows, or sunroof

best advices would be to check your fuses in the cabin or under the hood.

or

your grounding cable from battery or chassis is either loose or corroded. check your battery terminals and make sure they're clean. i had the exact same problem when relocating my battery from the front of the car to the trunk of the car. my ground cable was loose and the electrical circuit didnt seem to be going through the cycle.

SOURCE: both front power windows stopped working

hope this helps. if u have any other questions just let me know




Fuse locations for options not shown can be found in the corresponding wiring diagrams.
Amp.


1 - Headlight, Low Beam, Left (56b) 10
2 - Headlight, Low Beam, Right (56b) 10
3 - License Plate Lights (5 10
4 - Rear Window Wiper And Washer System 15
5 - Windshield Wiper/Washer 15
6 - Fresh Air Blower, A/C (X) 20
7 - Tail Lights, Right (58R) 10
8 - Tail Lights, Left (58L) 10
9 - Rear Window Defogger 20
10 - Fog Lights 15
11 - Headlight, High Beam, Left (56a) 10
12 - Headlight, High Beam, Right (56a) 10
13 - Horn (15) 10
14 - Back-Up Lights 10
15 - Engine Electronics (15) 10
16 - Power Sunroof, Front Map/Reading Light 15
17 - Emergency Flashers (15) 10
18 - Fuel Pump (FP), Heated Oxygen Sensor (HO2S)
Control Module 20
19 - Coolant Fan, A/C Relay (30) 30
20 - Brake Lights (30) 10
21 - Interior Lights, Clock, Luggage Compartment
Light (30) 15
22 - Cigarette Lighter, Radio, Luggage Compartment
Release 10

Separate Fuses

(Located above the relays)



- Fuse for ABS hydraulic pump relay 30
- Fuse for ABS main relay 30
- Fuse for A/C 30
- Fuse for power windows 20
- Fuse for cruise control 5
- Fuse for cigarette lighter 15

SOURCE: Radio and Sunroof both stopped working at same time. Fuses in 3 locations all seem to be good.

Not positive it is the same thing, however, when setting up my iPOD adapter to the radio, I made the mistake of not following the instructions to the T, and it caused my sunroof to stop working... after a day (which I later found out gave the system enough time to "reset" and connect), I turned on my stereo, pushed the 3CH to Dolby Surround, and that did the trick. It's been about a year... and I've had no problems with the sunroof!