2000 Sunfire GT Door lock problem!

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fierodough

Member - Posts: 6

Joined: March 11, 2003

Location: Canada

Posted: January 28, 2004 at 6:37 PM / IP Logged

Car: 00 Sunfire GT with power averything.

Problem: Driver's side door lock not unlocking under power. (works with key) no ovious mechanical resistance. Trunk stoped working at the same time!

What is weird? Many 00 Sunfires and Cavaliers have this problem!

Does anyone have the wiring diagrams for the locks, keyless and trunk? Do they share a common relay?

If this help: the lock system on the FOB unlocks the driver's side first (normally) then press unlock again and does the passenger door. To lock, both are done at the same time. Trunk is independant. How is driver unlock and trunk related?

Thanks!

Eric

draasch

Gold - Posts: 2,172

Joined: February 07, 2003

Location: Florida, United States

Posted: January 28, 2004 at 11:26 PM / IP Logged

what i would do is check all of the fuses. you might have one under the dash and under the hood....

does the drivers door unlock from the switch?? or just the pass. door??

if only the pass. door unlocks, then i would test the motor inside the door.

if it works off of the switch then it could be in the K/E unit itself.

if there is a relay for those features, then it will be marked in one of the boxes

Good Luck

David

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sroth140

Silver - Posts: 513

Joined: August 27, 2003

Location: United States

Posted: January 29, 2004 at 12:15 AM / IP Logged

the wiring is pretty simple. 5wi lock/unlock and trunk uses a positive trigger. i agree with checking the key fob. if everything works fine with the interor controls, id look into a new keyless entry system. might as well get a remote starter.

fierodough

Member - Posts: 6

Joined: March 11, 2003

Location: Canada

Posted: January 29, 2004 at 6:01 AM / IP Logged

The keyless FOB is locking all doors but will not unlock driver. nor open the trunk. the buttons inside the car wil lock and unlock the pass. door, but only lock the driver.

What I'm getting at, is the driver unlock and trunk release failed at the exact time. So the 2 are dependant of eachother. That makes me think " common relay"

I have read about this happening to many Cavaliers and Sunfires of the same year. But no one posted the fix or problem.

Does anyone have the diagrams to show what relays / fuses are used?

HamiltonAudio

Silver - Posts: 278

Joined: October 15, 2003

Posted: January 29, 2004 at 7:47 AM / IP Logged

its actually a keyless entry module in the car....perhaps have it replaced?

draasch

Gold - Posts: 2,172

Joined: February 07, 2003

Location: Florida, United States

Posted: January 29, 2004 at 8:52 AM / IP Logged

OEM Keyless Module Located On Drivers Side Of Trunk

Good Luck

David

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813-376-9778

Tampa

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kiteman

Copper - Posts: 98

Joined: January 14, 2004

Location: United States

Posted: January 29, 2004 at 8:53 AM / IP Logged

I would agree that mybe the keyless entry has failed and the dealer should check.

draasch

Gold - Posts: 2,172

Joined: February 07, 2003

Location: Florida, United States

Posted: January 29, 2004 at 8:56 AM / IP Logged

you can test the wire at the K/E unit in the trunk. see if the wires have power when you push the buttons on the key FOB.

Good Luck

David

Ace Security

813-376-9778

Tampa

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logger

Member - Posts: 14

Joined: December 28, 2002

Location: Canada

Posted: January 29, 2004 at 7:16 PM / IP Logged

sounds like the module's to blame, same thing happened to my GT.

fierodough

Member - Posts: 6

Joined: March 11, 2003

Location: Canada

Posted: January 30, 2004 at 6:10 AM / IP Logged

draasch wrote:

OEM Keyless Module Located On Drivers Side Of Trunk

it's a 2000... it's unfortunatly built into the BCM.. :(

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