crawl under the van directly beneath the drivers seat look up on the inside of frame rail. There will be several hyd lines going to the unit.
good luck
Actually from the Astro 1999 factory Shop manual have the "LT version "
The ABS (Antilock Brake System) valve /pump module with the hydraulic line is on the frame under the driver side.
The ABS electronic control module is under the drivers seat in the bulge under the carpet
The AWD (the All Wheel Drive ) Module (silver case with 2 connectors, one a black and one an orange ) is "in" the drivers side kick panel behind the Parking Brake Assembly" 4 bolts hold the assembly in place after disconnecting the release cable...
Fwiw a common problem is the metal U channel that large amount of wiring runs directly under the carpet here by the parking brake and people not putting wiring and connectors back into channel so the wires chafe on the metal edge of the channel with left foot pressure and cause intermittent shorts
The airbag control module is on the passenger side..
Right under the ignition cap.
Where is the lighting control module located on a 1999 Lincoln town car
The PCV valve on a 1999 Astro should be located on top of the valve cover. It plugs in and can be easily replaced.
it is not an alarm module it is called a G.E.M. module,and it located behind the radio in the dash.and to replaced it has to be reprogrammed
The central locking module, on a 1999 Renault, is located under the dashboard.
The 1999 Oldsmobile headlamp module is located on the firewall in the engine compartment. The headlamp module will be on the drivers side of the firewall.
Inside the distributor
The 1999 Mercury Sable computer module can be located behind the passenger side dashboard. The dashboard will need to be removed in order to view the computer module.
The AC low side service port on a 1999 Chevy Astro van is located next to the firewall. It is the port that is closest to the evaporator.
It is part of the engine computer.
There is none!
it is located on the front of the wiper motor.