either inside the gas tank or right up against it on the drivers side of the van.
The PCV valve on a 1999 Astro should be located on top of the valve cover. It plugs in and can be easily replaced.
How do you remove the dashboard fascia on a 1999 Chevy Astro?
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.
The fuel filter is located just above the rear axle.
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The 1999 Chevy Astro horn relay switch can be found on the back of the horn. The relay switch will be attached to the horn with two retaining screws.
The fuel filter for most GM vehicles is behind the driver and under the vehicle.
The oil filter is on the forward side of the engine directly below the hood latch.
The oil filter is located below the front bumper, accessible through a door in the front skid plate.
drivers side frame rail tough to get to!
Try the installdoctor.com. Worked for me.
the firing order is 165432