2007 Tahoe Power Lift Gate not working

[Trailblazzin]

My power lift-gate is no longer operational. The only way to open it is to hit the button and manually pull it open. But to do that i can only open about 3-4” and then required to pull through some resistance and then a pop that allows it to open.

I have these DTC from the lift gate module.
B153E 08
B153A 08
B396A 02
B153B 02

I cleared the codes and tried to open it with my Tech2 and get the same results. This time i got the below codes.

B1019 00
B153E 08
B153A 08

Any ideas on a fix let me know. Thanks!

 

[BG1988]

153E Description The liftgate control module continuously monitors power liftgate operation and calculates its location and direction of travel using 2 Hall effect sensors that are part of the liftgate …

 

[wsteele]

My power lift-gate is no longer operational. The only way to open it is to hit the button and manually pull it open. But to do that i can only open about 3-4” and then required to pull through some resistance and then a pop that allows it to open.

I have these DTC from the lift gate module.
B153E 08
B153A 08
B396A 02
B153B 02

I cleared the codes and tried to open it with my Tech2 and get the same results. This time i got the below codes.

B1019 00
B153E 08
B153A 08

Any ideas on a fix let me know. Thanks!

Have you turned off the power lift gate on the center console switch (put it in manual mode). When you do that will it open and close normally (manually)?

 

[wsteele]

On the codes, just cut and pasted from the shop manual:

B153A
Liftgate Latch Switch Signal Circuit
LGCM
DTC B153A

B153B
Liftgate Open Switch Signal Circuit
LGCM
DTC B153B

B153E
Liftgate Position Sensor Signal Circuit
LGCM
DTC B153E

B396A
Liftgate Motor Control Circuit
LGCM
DTC B396A

B1019
System Configuration Error
LGCM
DTC B1019
SDM
DTC B1019

 

[Just Fishing]

Looking in the factory service manual, skimming over those codes.
I see that a bunch of them show up as "Short to ground"

Might not hurt to check over the wiring harness.
if you happen to have a tech2, it might be handy to go through the special functions of the lift gate and manually activate each one to possibly narrow down where the issue is.

For my liftgate, just dicking around with the tech2.
I found out where the installer pulled power for the aftermarket backup camera.
The Liftgate!

 

[Just Fishing]

I hope you can read this, I have to reduce the size of the image.

 

[Just Fishing]

 

[Just Fishing]

This seems important as well,

 

[Trailblazzin]

Thanks for all the support. Following up because I just went ahead and replaced the entire lock actuator. It’s all working like normal again.