Probably assy marks
Assy is short for assembly.
sensor assy vacuum
The duration of Assy McGee is 660.0 seconds.
Inspector marks, assy marks, proof marks
when i removed the heater for my nova i had to disconnect the cables and wires from the heater assy and on the engine side of the firewall remove the nuts holding the assy to the firewall that allowed the whole assy to come out from under the dash then i dissassembled the assy and the heater core was bolted into the assy on the ends hope this helps
If you mean fuel level sender-in the tank, most likely part of pump assy
remove the side marker light assy Phillips screws, the assy will slide out. you then have access to the three 10mm bolts holding the fog light assy in. remove then and push out the fog light assy. then remove the four Phillips screws from the corners of the fog light to separate the assy. then change the bulb and put back together
There is an orifice in the primer assy. in the carb. that is plugged. You will have to remove and clean the primer assy.
lower the tail gate on the truck. there will be 2 torqx head screws removed the screws it will loosen the inside of the tail light assy... pull on the tail light assy strait back. the light assy should come out turn the bulb casing on the back of the light assy and pull the bulb out.