Thanks for using Just Answer. I will be glad to assist you.
Please refer to the diagram below and let me know which style of light you would like.
In the diagram, the wide light is listed as #1 and sits on top of the glass window on the back tailgate.
Here is a link to one for sale on ebay. The $57.95 price will definately save you some money. You can verify that this is the correct part in the picture below.
Here is a link to the other style of light also available on ebay. The light is seperate from the black plastic housing. You will remove the housing and put the light inside it.
This light measures around 21", please refer to the diagram and link below:
If this is not the correct light then I will need your VIN # XXXXX I can find it on a parts locator.
It should be held together with screws from the back of the housing.
Have you removed the entire housing yet?
The vin# XXXXX XXXXX the driver's front of the dashboard if you are looking through the windshield from the outside of the vehicle.
You could also find it on your insurance card.
My diagram shows that the plastic housing comes apart with 2-4 screws from the front of the plastic housing.
The plastic housing definately comes apart because GM used to offer the LED light bar seperate from the housing.
Unfortunately it is more expensive now because you have to purchase the whole assembly. The LED light has been discontinued as a seperate part.
I have found the entire assembly online for $458.98 at www.gmpartsdirect.com
You will have to enter the part # XXXXX into the upper left corner where it says search.
The one on ebay should be the correct one. You will just take the housing apart, remove the old light and put the new light into the housing.
The light is 17 1/4" long and the total unit is 21" overall.
I cant verify that this is the correct part because GM has discontinued the replacement lamp, however i think that it will work.
You can make the other one work with some modification. You would just need to figure out a way to mount the light inside the black housing.
Your very welcome.
The one on ebay should be the correct one according to the measurements you gave me.
Please let me know if there is anything else I can do to assist you.