* Manual shift: A 1989 Silverado with a manual transfer case shift will *not* have an actuator. The driver manually shifts the transfer case lever.
* Automatic (electric shift): Some 1989 Silverados might have had an optional electric shift for the transfer case. In that case, yes, there would be an actuator to move the shift mechanism. This was less common in that year.
To know for sure if *your* specific 1989 Chevy Silverado has a transfer case actuator, you would need to:
1. Check your owner's manual: This will specify the type of transfer case system.
2. Look under the truck: Locate the transfer case and examine it for an electrical connector and a small motor-like device. This would be the actuator.
3. Check the parts diagram: Use the VIN number to look up your vehicle's specific parts diagram online (many auto parts websites provide this). This will show you if an actuator is part of the transfer case system.
Without knowing the specifics of your truck, it's impossible to say definitively.
