2004 Pontiac Grand Prix Door Lock Actuator

Tiny
DIGITALEXCLUSION
  • MEMBER
  • 2004 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 116,000 MILES
Hello,
The rear passenger door doesn't lock/unlock. I'm assuming it's the power lock actuator, so I was going to start by replacing that.
My question is how do I replace the actuator? I've removed the door panel but the actuator is behind the metal door panel making it very difficult to reach. I don't even see any screws/bolts to remove. I've uploaded a picture showing the door after I removed the panel and I also took a picture of the lock actuator by putting the camera inside the door. Any help is very much appreciated!



http://www.2carpros.com/forum/automotive_pictures/300972_DSCN1884_1.jpg



http://www.2carpros.com/forum/automotive_pictures/300972_DSCN1886_1.jpg

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Monday, January 12th, 2009 AT 9:10 PM

8 Replies

Tiny
IMPALASS
  • EXPERT
Hello -

I believe this is the info you need.

Lock Replacement - Rear Door
Notes

Lock Replacement - Rear Door

Removal Procedure

Important: Do not attempt repairs in order to correct lock discrepancies. Replace the lock.

Remove the rear door trim panel .

Remove the rear door water deflector.


http://www.2carpros.com/forum/automotive_pictures/248015_1_156.jpg



Open the outside handle rod to lock clip located on the door lock. The door handle rod should be loose from the lock.

Remove the inside door handle.


http://www.2carpros.com/forum/automotive_pictures/248015_2_104.jpg



Remove the screws (1, 3, 2) securing the lock to the door (1).

Remove the door lock and rods through the access hole in the door inner panel.


http://www.2carpros.com/forum/automotive_pictures/248015_3_72.jpg



Disconnect the electrical connector (2) from the lock by pulling out the tab (1).

Installation Procedure


http://www.2carpros.com/forum/automotive_pictures/248015_4_47.jpg



Connect the electrical connector (2) to the lock by pushing in on the tab.

Install the lock and rods through the access hole in the inner door panel.


http://www.2carpros.com/forum/automotive_pictures/248015_5_30.jpg



Notice: Refer to Fastener Notice in Cautions and Notices.

Install the screws (1, 3, 2), securing the lock to the door. Install the top screw first (1), then the bottom (2) and lastly the middle screw (3). Tighten the screws to 10 N.m (89 lb in).

Install the inside door handle. Refer to Door Handle Replacement - Rear Inside


http://www.2carpros.com/forum/automotive_pictures/248015_6_20.jpg



Important: The outside handles have adjustable outside handle lock rods. This allows for adjustment of the amount of travel needed in order to operate the outside handle.

When servicing a vehicle with adjustable outside handle lock rods, remove all free play between the outside handle and the lock. Also, do not operate the outside handle before these connections are made.

Install the outside handle rod into the clip.
Close the clip over the outside handle rod.

Inspect the door for proper operation.

Install the rear door water deflector.

Install the rear door trim panel.
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Monday, January 12th, 2009 AT 9:38 PM
Tiny
DIGITALEXCLUSION
  • MEMBER
ImpalaSS,
Thanks for your quick response. The instructions you posted are great but I have a question.
I was able to remove the door handle rod. But how do I remove the inside door handle?
That's the only thing stopping me from getting the lock out of the door panel.

Thanks again.
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Monday, January 12th, 2009 AT 10:08 PM
Tiny
IMPALASS
  • EXPERT
Hello -

Does this help you out.........is this what you are looking for?

Door Handle Replacement - Front Inside
Notes

Door Handle Replacement - Front Inside

Removal Procedure

Remove the front door trim panel.

Raise the door window to the full up position.


http://www.2carpros.com/forum/automotive_pictures/248015_7_18.jpg



Remove the rivet (3) from the inside handle.

Use a center punch to drive the inside handle (2) mounting rivet (3) mandrel into the rivet head to create a pilot hole.

Use a 6.35 mm (1/4 in) drill bit to drill out the rivet.

Remove the inside handle rod (1) from the lock rod guide block.


http://www.2carpros.com/forum/automotive_pictures/248015_8_10.jpg



Remove the inside handle (2) by sliding it forward until it releases from the door.

Turn the inside handle clockwise to release it from the inside handle rod.

Remove the inside handle from the door.

Installation Procedure


http://www.2carpros.com/forum/automotive_pictures/248015_9_9.jpg



Install the inside handle to the door.

Turn the inside handle (2) counterclockwise to install the inside handle rod (1).

Install the inside handle (2) into the slots in the door, then slide it rearward to lock it in place.

Install the inside handle rod (1) into the lock rod guide block.

Use a 6.35 mm (1/4 in) to install the inside door handle.

Inspect the door for proper operation.

Install the front door trim panel.
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Monday, January 12th, 2009 AT 11:28 PM
Tiny
DIGITALEXCLUSION
  • MEMBER
Wow.I didn't realize that in order to replace that power lock actuator I'd be removing the lock and I'd have to drill out the rivet for the inside door handle!

In the set of instructions to reinstall the inside door handle after I drill out the rivet it says to "Use a 6.35 mm (1/4 in) to install the inside door handle." What does that mean? I use a 1/4" screw or bolt or what?

Thanks again.
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Monday, January 12th, 2009 AT 11:45 PM
Tiny
IMPALASS
  • EXPERT
Hello -

I would definitely use bolts and lock nuts. Screws can vibrate loose. Make sure they are not too long.

Hope that helps.
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Tuesday, January 13th, 2009 AT 10:29 PM
Tiny
DIGITALEXCLUSION
  • MEMBER
So I finished up replacing the lock actuator! Here are some tips in case anyone else planning on doing this to a 2004 Grand Prix.

The lock actuator and the locking mechanism are both one piece so I ended up ordering it from the dealer ($138), since the actuator's I saw online are JUST the actuator and not the entire part. GM Part #: 15813546. There isn't any possible way that the actuators online will work unless you take apart the locking mechanism. Which I'm not sure is even possible, so save yourself the time and just get it from the dealership.

When I started putting the door back together I ended up using a cap screw socket with a lock washer to attach the inner door handle back to the door after I drilled out the rivet holding it into place. I used a 1/4" x 3/4" and there was enough clearance.

Other than that, all the instructions that ImpalaSS provided were right on! Thanks again for all your help!
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Thursday, January 15th, 2009 AT 5:42 PM
Tiny
IMPALASS
  • EXPERT
Hello -

Digitalexclusion - Great to hear from you with such good news.

I am glad you got it changed.

Hey, thank you very much for offering some helpful advice and tips on changing that to the other folks. That will definitely help others out in the future.
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Thursday, January 15th, 2009 AT 6:11 PM
Tiny
IMPALASS
  • EXPERT
Hey Digitalexclusion - one other thing for you.

You may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.

05018
03/08/2005
Recall - Electronic Throttle Control Pedal Replacement

NHTSA05V046000
02/04/2005
Recall 05V046000: Accelerator Pedal Replacement

04055
08/16/2004
Recall - Front Frame/Rear Body Mount Fracture

NHTSA04V287000
06/01/2004
Recall 04V287000: Caliper Mounting Bolt Torque

NHTSA04V299000
06/01/2004
Recall 04V299000: Potential Steering Shaft Separation

04049
06/01/2004
Recall - Front Brake Caliper Tightening Torque

03045
08/01/2003
Recall - Right Rear Brake Hose Torque
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Thursday, January 15th, 2009 AT 6:13 PM

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