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Door Lock Actuator Issues - Info, Solution

Old December 31st, 2014, 6:25 AM
  #21  
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Originally Posted by mfrugetx View Post
if the actuator is bad will the auto locks still work from the switch on the door? my auto locks work when i push the switch on the door, but wont unlock when trying to use the key fob. i replaced the keyfob recently.
if the lock actuator works from the door switch the actuator is good. you have a keyless entry problem not a lock actuator problem.
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Old December 31st, 2014, 10:38 AM
  #22  
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No, if the motor is bad, it will not lock or unlock electronically, it will only work manually (pushing the lock up and down by hand). Be advised that its not uncommon for the locks to being to work intermittently as the motors are failing. They may work "sometimes" but will eventually fail completely as the GM door lock motor continues to degrade over use.
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Old January 21st, 2015, 8:39 AM
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Default Door Lock Actuator problem solved

Hey Everyone I am a newbe here on this forum but I have a fix for those problematic Chevy Door lock Actuators. Give me a day to work up a proper tutorial with some good photos. This is an easy fix that you will not have to soend hundreds of dollars and you do not have to be an ASE Cert Mechanic to do. like I said give me a day to work up a tutorial and I will post it in the general tech section.
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Old January 22nd, 2015, 9:36 AM
  #24  
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Please note we do have the repair instructions posted on the bottom of the product page on our website for replacing the motor only. Please click on the image of the Tahoe in our post above to be taken to our product page.

We have an inventory of new motors in stock and ready to ship ASAP. We also have an inventory of core actuators for anyone looking to buy a complete actuator rather than installing the motor themselves.

You can save $ with the motor only option but you can also buy the complete actuator.

Thanks for all the support from the forum members and please feel free to call or email with any question.

[email protected]
Gruven Parts | Custom VW Parts | Volkswagen BMW & Audi Auto Parts
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Old February 11th, 2015, 7:47 AM
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2007-2014 GM Door Lock Actuator Repair!

GruvenParts.com is proud to release our repair for the 2007-2014 GM passenger door lock actuators. In most cases, the faulty motor within the actuator burns out but the rest of the actuator unit is still fine. GruvenParts.com has corrected this design flaw by developing a new high torque motor with the factory correct wiring input. Our motors have passed rigorous 35,000 lock/unlock cycle testing without issue. We warranty all units for 1 year, but if there are ever any issues with the product we ask you to contact us immediately even if outside the warranty period. Please read the repair options below before ordering.

Repair Options
Buy Motor Only and Install Yourself - Save $$. Click the product image above to visit the product page and read the motor only install procedure.

Buy a Repaired Actuator : Our FAA licensed Airframe and Powerplant mechanics disassemble the broken actuators, clean and lubricate the core components, and replace the unreliable GM electric motor within the unit with our new high torque design with the factory correct wiring input. The repaired units are bolted back together using appropriate fasteners and can be easily re-serviced. The repaired actuator is fully tested and warranted.

Send Us Your Actuator for Repair : Send in your actuator to the address specified on the Product Page. We will accomplish the repair described above and send it back to you within 1-2 weeks.

BEFORE ORDERING THE ACTUATOR :
Please email [email protected] with your actuator part number so we can ensure we have it in stock. You can call your dealer parts department and provide them your VIN # and they will give you all your actuator part numbers. Remember : LF (Left Front) is Drivers Side Front, RR (Right Rear) is Passenger Side Rear.

Eligible Models
2007-2014 GM models including Tahoe, Yukon, Escalade, Silverado, Suburban, Sierra, Avalanche (and others) as well as Malibu and Cadillac sedans using any of the following door lock actuator part numbers (and very likely many others):

25873487 25876390 15896625 25945737 15896626 25876389 25873488 25945736 20783850 25811735 25876386 25945752 25848878 25866299 25863021 25876382 25955017 22741770 22862025 25876384 25863019 25876388 15896624 25873485 25945754 20783852 25876393 25789215 25876394 25945741 25876387 25873486 25789213 25876385 25945738 25876391 20783859 15896628 25873490 25789219 25876397 25945749 25876383 22785476 22785607 25876451 25843164 22791036 22862238 25876521 25876380 20783844 25945746 25863017 25876398 20777854 20777855 25945739 15896627 25876392 20783860 25873489 25876536 22791011 19210210 25873490 13581405 22865521 25829641 25876452 20772313 20772312 22865519 25876463 22865520 25876451 20772311 25876462 22865518 25840363 20785785 25879295

Please keep checking back on this list, as it continually grows.

Core Charge
There is a $20 core charge when ordering the actuator from us which is refunded when you send us your old actuator in serviceable condition (ie, not ripped apart, burned, run over, ect...). Please send your old actuator to the address listed on the product page to receive the $20 core refund. Please include a copy of your original order invoice and write "CORE" on the package. There is no core on the "Motor Only" option.

By Back Program
Do you have a dead actuator lying around the garage? Are you a GM service tech or independent shop that has buckets of these things collecting dust or filling up your waste bins? You may be able to send them to us for a $10 credit or check and help out other GM owners. We are actively building our Cores inventory and need your serviceable actuators. If they are serviceable, we'll issue you a $10 credit or check (your choice). Please email [email protected] with your part number(s).
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Old April 22nd, 2015, 7:16 AM
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Thanks for all the inquiries, please let us know if you have a question regarding this product.

Please click the following link for the GruvenParts.com GM Door Lock Repair page :

2007-2014 GM Door Lock Actuator Repair - Gruven Parts
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Old April 26th, 2015, 12:32 AM
  #27  
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Default Replace vs repair door lock actuators

I repaired both front door actuators on my 2008 Avalanche today using Gruven motors and procedures. It took me all day to do so and I broke a 6-32 tap in the second actuator and therefore had to modify the repair for that actuator. Because I also have to repair or replace the LH back door actuator I ordered a Dorman actuator from Amazon.com to replace the LH front door actuator that I had to modify the repair to - and will use the Gruven motor in the back door actuator when I repair it. I used a 8-32 tap for the modified repair to the LH front door actuator, and will use it for the rear actuator repair too.

Gruven motors cost $29.49 each. The Dorman actuator is $79.54 with tax. It took me over 2 hours per actuator to do the Gruven repair procedure + fasteners and a broken 6-32 tap. So, unless your time is free it will cost less to buy new actuators than just the motors.
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Old April 26th, 2015, 8:47 AM
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Thanks for your feedback, it is only 1 of the very few critical reviews Ive received so this certainly will help us improve our product. We are working on a "Repair Kit" which will include the custom pinion gear preinstalled and the correct high quality drill pilot and tap to make this job easier.

Im sorry you had difficulty with the drilling / tapping of the 6-32 hole. The option to install your own motor is only recommended for those that have the capability to drill/tap a hole properly as many do and have done. We have many other customers who simply take their lock actuators with our motors to a local shop and have them perform the simple install procedure. It really is quite simply but you must have access to the correct tools and also have some experience drilling/tapping into metal. Of course we can and do repair these every day for customers, so we're always an option too.

As for the time issue, the problem with your statement is the Dorman or GM actuators use a defective motor (see picture below). This is why the problem is so prevalent to begin with. So yes, you could spend your time and money buying and installing another defective unit from GM or Dorman, and it will probably work for a few months. But it will fail again because they are using the same defective motors. So you will be soon reinstalling another door lock actuator if you went with the Dorman units, thus spending more time and money. Not to mention, you are putting your $ into the hands of the same people who deny this is even an issue to begin with, which should make you sick. You can only take the door apart so many times before the door panel itself will crack and cause rattles so its best to repair 1 time and be done with it.

FYI - here is just 1 pile I have of the defective Dorman and GM motors they are using. Each of these is completely burned up, some with smoke and melt damage on the end bell housing, indicating a complete short and a possible fire. I wonder if GM has had any issues with the door actuators catching on fire ?

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Old April 26th, 2015, 10:08 AM
  #29  
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Default Gruven motors

Thanks for your response to my experience. I now have two Gruven motors and will have one GM and one Dorman. When the GM and/or Dorman fail I will buy Gruven motors. I am a journeymen machinist and know how to drill and tap. Unfortunately I do not own a drill press so did the drilling with a hand drill. 6-32 taps are very fragile. That is why I will use 8-32 the next time.

My point is that to get reliable motors in the door actuators will cost more, because of labor involved, than buying new actuators and running the risk of premature failure.

I'll post when the Dorman actuator fails.
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Old May 28th, 2015, 10:29 AM
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We are in process of building a "Repair Kit" to make the install easier.

We will be supplying the new motors WITH a new specially made brass gear preinstalled.

We will also supply the correct pilot drill and high quality tap.

This should make the job easier for everyone. Thanks for the input and guidance as to how we can make our product more complete.

The "Repair Kit" option should be listed on our product page in another few weeks.

2007-2014 GM Door Lock Actuator Repair - Gruven Parts
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