Rear glass on my 05 envoy never locks,the alarm will go off if some one opens it,but only for a little while and then will reset itself
There is a known TSB for this....
#07-08-52-003: Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE)/Key Fob Transmitter/Door Lock Switch, Lifgtate Hatch or Liftgate Glass May Lock/Unlock When Rear Liftgate Glass Button Depressed - (Sep 13, 2007)
Subject: Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE), Key Fob Transmitter or Door Lock Switch, And/Or Liftgate Hatch Or Liftgate Glass May Lock Then Unlock When Rear Liftgate Glass Button is Depressed (Reposition Lock Cylinder Wave Washer and Adjust Lock Rod)
Models: 2005-2007 Buick Rainier
2005-2008 Chevrolet TrailBlazer, TrailBlazer EXT, TrailBlazer SS
2005-2008 GMC Envoy, Envoy XL, Envoy Denali
2005-2008 Saab 9-7X
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Do This
Don't Do This
Reposition liftgate lock cylinder wave washer and adjust lock rod.
DO NOT replace the liftgate latch or actuator.
Condition
Some customers may comment on one or more of the following conditions:
• The rear liftgate glass may not lock when using the remote keyless entry (RKE), key fob transmitter or door lock switch unless the lock is pressed a second time.
• The rear liftgate or glass locks, but may be unlocked when the rear liftgate lock cylinder button is depressed.
• The rear liftgate locks but the liftgate glass may not lock.
Cause
These conditions may be caused by one or all of the following:
• The rear liftgate cylinder lock rod may be out of adjustment.
• The wave washer on the liftgate lock cylinder may be out of position with the cup side down.
• Excessive movement or slack in the lock rods at the liftgate bell crank assembly.
• The liftgate lock cylinder pawl may contact the rear liftgate glass latch when the lock cylinder button is depressed.
Correction
Important: Do Not remove the rear liftgate lock cylinder from the vehicle to perform this repair.
Reposition the rear liftgate lock cylinder wave washer and adjust the lock rod using the steps below.
Verify the customer's condition.
Open the liftgate.
Remove the upper liftgate garnish molding.
Remove the rear liftgate trim panel.
Remove the cylinder lock rod from the threaded lock rod retaining clip.
Tip
Place the tip of a screwdriver blade into the opening of the C-clip and slowly rotate the screwdriver to pry out the C-clip from the shaft. Then use needle-nose pliers to remove the C-clip.
Remove the C-clip from the rear liftgate lock cylinder push button and remove the wave washer.
Install the wave washer with the cup side up.
Position the wave washer with the curved edges of the wave spring parallel to the tabs on the lock cylinder shaft.
Important: Use needle-nose pliers to slightly squeeze the C-clip back into shape. Make sure the clip seated, you should feel a snap and hear an audible click.
Install the C-clip onto the shaft and in the slot using needle nose pliers. Then rotate the pawl several times to make sure the C-clip does not rotate. If the clip rotates then the clip is not fully seated.
Position the lock cylinder pawl to the full clockwise position.
Pull up on the cylinder lock rod to remove any slack in the bell crank.
Install the cylinder lock rod into the threaded lock rod retaining clip while removing any slack from the lock rod linkage.
Close the lock rod retainer clip.
Close the liftgate assembly.
Open the liftgate glass while keeping the liftgate closed.
Use the key fob to cycle the liftgate to the lock and unlock position while inspecting the rear liftgate pawl. The lock cylinder pawl should have clearance between the latch as shown above. If the pawl is contacting the latch, readjust the cylinder lock rod.
Verify that the customer's condition has been corrected.
Install the rear liftgate trim panel.
Install the upper liftgate garnish molding.
SOURCE: rear hatch door won't lock dash light showing
You need to tighten the lock mech on the boot lid. this will close the boot just enough more to turn the light on. It's no biggy, you might need a star driver depending on bolt head. move it into the boot lid approx 4mm to start. then 1mm until 10mm. if no joy then it may be the sensor.
All the best
Ally A
SOURCE: Rear hatch and barn doors will not lock or alarm
In time with usage, the electric locks in the doors and gates wear out.
You can purchase replacement parts... a little involved to change but doable.
I suggest a Haynes manual for photos for disassembly .
(I've got a 2001 and all 4 doors eventually quit...bought replacement parts at local dealer)
k
SOURCE: rear hatch 2005 chevy tahoe is locked & won't open
my 06 tahoe just got this problem...all other doors lock and unlock with the fab and door switch...but the hatch is in permanent locked mode. i cant even unlock the hatch window. why is this happening?
SOURCE: 2006 Tahoe Rear Hatch lock actuator
A wrecking yard is your best bet. The odds of you getting one that is bad are astronomical. Are you sure your remote has fresh battery's? Also check your fuse going to that devise before buying another one. The second choice on where to find one is eBay. Of course they are usually higher then a wrecking yard. They get a lot of there parts for sale by going to the salvage yard them selves. I hope this helps and Good Luck, The Raz
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