For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

California Proposition 65 WarningHome Page (Radio with Touchscreen)
Touchscreen Buttons
Touchscreen buttons show on the screen when available. When a function is unavailable,
the button may gray out. When a function is selected, the button may highlight.
Home Page Features
Press to go to the Home Page.
audio: Press to select AM, FM, SiriusXM
(if equipped ...
Control Valve Body Assembly Assemble (Gen 1)
Control Valve Body Assembly Assemble
Callout
Component Name
1
Valve Body Ball Check Valve (Qty: 6)
2
Control Valve Channel Plate Spacer Plate Assembly
3
...
Explanation of scheduled maintenance items
Basic information
The following section provides a detailed overview to help you better understand
the scheduled maintenance requirements for your Nissan Armada. These descriptions
explain why each service item is important and how it contributes to the long-term
reliability, safety, and perf ...