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Important: The driver information center (DIC) will display the message See Manual - Tailgate anytime a learn is required except after the installation of a new regulator. When a module is not learned, or in a window fault state, only the window remains functional.
1.Activate the window up switch using the key cylinder or overhead console switch and maintain switch activation for 2 seconds after the window has stalled in the fully closed position.
WARNING
Important: The window may be in any position to start the re-learn, but the up operation must be performed first.
2.Activate the window down switch and maintain switch activation for 2 seconds after the window has stalled in the fully open position.
and here a older post..http://www.fixya.com/cars/t1709786-2004_...
or here too...http://www.fixya.com/cars/t4462514-2004_...
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SOURCE: Liftgate hydraulics stopped working 2003 GMC Envoy SLT
Yes this is electrical. Start by checking the fuses.
SOURCE: What is the biggest tire that will fit a 2004 GMC Envoy
Stock Tire - 245/65R17
Revs per Mile:704.3
Overall Diameter:
29.53 in
750.06 mm
Actual Speed:
60 mph
100 km/h
Tire 1 - 275/60R17
Revs per Mile:693.5
Overall Diameter:
29.99 in
761.74 mm
Speedometer1:
59.0 mph
98.4 km/h
Speedometer Difference: 1.557% too slow
Diameter Difference: 1.54%
Will fit with the stock rims.
SOURCE: 2004 GMC Envoy XUV mid-gate window won't roll up
be sure the gate is fully closed or it will not roll up if it is firmly in place and still does not go up you will have to remove the cover and see if the actuator plastic has broken off from the switch, it also could be a bent rod and or the switch is bad. Check fuses as well just to be sure before going to all the other work to pull cover off. Hope this is helpful and thanks for using Fix-ya.
SOURCE: 2004 envoy xuv tailgate problems
I also have a 2004 GMC XUV. My gate would go down but not swing open. In trying to fix it, the gate then refused to go to the flat position.I have removed the cover plate on the gate and found the one of the solenoids loose from its mounting. Resetting the computer by disconnecting both battery leads and holding them together for ten seconds worked to restore function to the gate going flat, but the swing still does not work. I believe it is a bad solenoid or motor for the bottem left latch pin.
SOURCE: 2004 GMC Envoy XUV tailgate won't open downward
Do you live in a dusty area? My sister lives in dusty New Mexico and had a malfunctioning XUV tailgate. My reasoning was that something must tell the tailgate not to drop down if the glass is up, and if it can't tell, then it will only open sideways.
So we removed the trim panel, and the tailgate was indeed full of dust. By reaching my arm in, I found two plastic optical sensors which tell the gate whether the glass is up or down; both were coated with dust. After cleaning these the tailgate was back to its normal operation. The two sensors are flat, round - about the size of a nickel or dime...I couldn't see them, just found them by guessing that they must be there. Hope this helps!
Try pulling the rear hatch panel and move the unlock mechanism with a screw driver to get it to open.
If that does Not work:
Check for broken wires in the liftgate boot. Test the liftgate module powers and ground on the 4 terminal connector: 12 volts on the Orange wires in terminals A and C, ground on the Black wire in terminal D. The liftgate module is located inside the gate.
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