If your Riviera *does* have an air suspension, it's almost certainly an aftermarket addition. The location of any shut-off switch would then depend entirely on where the installer placed it. Common places to look for aftermarket switches might include:
* Under the hood: Near the air compressor or other related components.
* In the trunk/boot: Often near the air tank or compressor if they're located there.
* Under the dash: This is less common but possible.
* Inside the car: Could be a hidden switch in a less obvious location.
To find the switch, you'll likely need to:
1. Check your owner's manual (if you have one) for any mention of an aftermarket air suspension system: This is a long shot, but worth checking.
2. Inspect the car thoroughly: Look under the hood, in the trunk, and under the dash for any switches or controls that don't look like factory equipment.
3. Trace wiring: If you're comfortable working with car electronics, you could try tracing the wiring from the air compressor or suspension components to find the switch.
4. Consult the installer (if known): If the system was installed by a professional, contact them for the location of the switch.
Without more information about the specific aftermarket air ride system installed, it's impossible to give a more precise location.
