Service Support and Tips
SERVICE SUPPORT AND TIPSBuzz or Whine Noise Heard Underhood
A high pitched buzz or whine noise may be heard after the engine is shut off. This buzz or whine noise is coming from the solenoids in the transmission. These solenoids will stay active during the TCM shut down, which will last about ten seconds. Do NOT make any attempts to repair this condition. This is a normal characteristic of this vehicle.
Power Steering
The power steering reservoir is located under the engine cover.
Battery
The battery is located behind the front passenger seat in the floor. Remove the panel to access. Jump start connections can be easily accessed in the engine compartment using the remote terminals.
Optional Navigation Radio (RPO UZR)
There may be concerns that the Navigation DVD is inoperative. It has been revealed that the Navigation DVD was being installed in the CD media slot. This radio has one media slot for CD/MP3 disks and a second media slot for Navigation DVD. The CD media slot is located above the screen and the Navigation DVD media slot is located behind the screen. To insert the Navigation DVD, press and hold the eject button next to the CD media slot for approximately 15 seconds. The radio will then eject/tilt the screen. To close the screen, it will require two hands (one at each side of the screen) and push the screen in evenly toward the radio until it is secured.
Headliner Removal
There are four headliner retaining bolts located in the roof A/C vents that need to be removed prior to headliner removal.
Power Liftgate
Power liftgate operation is only allowed when certain operating criteria are met. Any of the following may prevent the power liftgate from functioning:
A loss of the low current battery power supply (until the ignition is cycled)
Vehicle is not in PARK
Engine cranking is present
Ambient temperature at the liftgate module is NOT between -17 to 80°C +1 to 176°F)
Liftgate motor excess current is detected
System voltage is out of range
A DTC is set that disables power liftgate functionality
The liftgate is locked when attempting to open from exterior handle
The theft deterrent system is enabled
If a signal from either of the 2 pressure sensing object detection sensors indicates an object may be pinched as the liftgate is brought to the closed position, the liftgate reverses direction and the power close operation is suspended until pressure against the sensor is released.
If any part of the power liftgate is repaired or replaced, the Liftgate Calibration Procedure must be performed. Using the Tech 2(R), select Special Functions in the Liftgate Module menu. Select "LGM Open/Close Test" and follow the directions on the screen.
Electronic Service Information
All required service information is currently online on GM SI. A dealership can also find the most current Owner's Manual and Labor Time Guide* online at website http://service.gm.com and under Service Information link.
*In Canada, the Labor Time Guide is located on the GMinfoNET.