Hello All,

So i have a 2007 Cobalt SS/SC with 80k on it. I used my sunroof fine on Friday and hasnt had a single problem before that. On Sunday morning I went to open the sunroof and NOTHING.

1. I checked the fuse - Perfect

2. i pulled down the switch and test the connector on the cable that goes to the switch which has 5 lines. black lead of the volt meter on the far left line and red lead on the far right line. PERFECT 12 volts. I then started moving the red lead over line by line until POP, fuse blew. Replace the fuse to continue testing.

3. Today i picked up a new sunroof switch and with a smile on my face i pushed the button NOTHING.

So now what.... I see alot of reviews around the frames going bad - Cant be that, my sunroof never got stuck or struggled a single time and again worked on friday. maybe the motor, but i would think i would have had some kind of notice in the past like slow performance or overheating and not closing.

The motor is $200 and is the next thing i would replace but i want to check with all of you before i do it. Has anyone else had the same problem.. no clicks, no noise, didnt get stuck.. I am going to pull down the headliner this week and try to test the lead that actually connects to the motor..

 

If all the wires checked out fine and if it wasn't the switch, then it's the motor just like a normal window motor, they all go bad after a little while

 

Does anyone have a diagram of the 5 wire connection and how it runs to the motor.. I want to test to ends by the motor and check voltage while using the switch to see if power is getting there. 1 must be battery to the switch and another ground to the switch.. That means 3 wires then go to motor and would all be power i would guess since the motor uses body ground. so im guessing 1 is open one is close and 1 is tilt. But which ones?

 

that was my first though. Just happened so sudden and want to make sure that the motor itself is getting power. Maybe a wire came loose from the switch to motor.. I see there is an actuator too.

I just found an ACdelco motor online for $95.. might order that.

 

what are your thoughts about beating it with a hammer like a starter. lol

 

give it a shot, it works on IC pumps lol

 

So as I was getting in the car after work I reached up on the roof right between the windshield and sunroof and banged the crap outta it. I got in and started the car and pushed the sunroof button back... IT WORKED... The whole ride home... 30min I played with it opening and closing it and it worked fine.. I am noticing a little jitter only while opening but not closing. I cleaned all the gaskets, rails and slides and regreased them. Still jittering but working.

 

well just take out the motor and check that.