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In-tank fuel pumps have two sections.  There's the electric motor, and there's the pump. Low fuel pressure can be a worn/damaged pump section, or it can be poor voltage to the motor that spins the pump.  It can also be a plugging fuel filter as said already.   In a perfect world, nobody would drop the tank until they've verified that the pump is getting voltage and amperage sufficient for proper operation.  Making this worse is that GM is known to use undersize wiring in the fuel pump circuit.  My '92 and '93 Luminas each have about two volts of voltage drop (VD) on the supply side, and about one volt on the ground side.  With 3 volts of VD, and battery voltage of 12.x; the pump is running off of only 9.x volts.  Engine starts, alternator jumps the voltage to 14.x; pump is still only getting 11.x volts.

oh... The top switch works both ways (insert bad joke) You can hear and see the top try to go back up it just doesn't have enough power to do so. Either the pump or the actuators possibly both are going. The car is just a toy so I haven't dug into it yet since it's not keeping me from driving it on nice days. Of course it would be nice to be able to put it up on my own lol

I was talking about the top switch since you mentioned it only works in one direction. I think the readout on the ACC might not change with the dimmer. I forget exactly now, but there are a few things the dimmer does not control on these cars. I haven't owned a CS convertible in 6 years now. It's been nearly 15+ years since I DD one.  

I finally got around to replacing my dead power door lock receiver. This is a real stinker of a job, there is a myriad of parts you have to remove enroute to getting at the small black box receiver which (on the coupes) is located next to the rear passengers side speaker behind the rear seatback. And you risk breaking any of them along the way. The manual advised that either the upper passengers side or the upper drivers side plastic trim that goes along the rear windows up the C pillar needs to be removed. Well, no way was I going to do that. I managed to get the rear seat to rear window trim panel off without removing those pieces. That was a bit of good luck, I guess. IMHO this was a ridiculous place to put this receiver. I decided to relocate the box to rest on top of the inner fender well in the trunk, using some gorilla tape to hold it on. All covered up by the interior trunk carpet. There is plenty of wire to make this happen, no cutting/splicing needed. Now, if that receiver croaks, this will be a 10 minute fix instead of a 3 hour headache. The only thing I broke was one push pin clip, and I am having a heck of a time finding even that. I programmed the transmitters and all is working just fine, mission accomplished. 

Are you talking about the dimmer switch? Because all of the other dash lights dim with it. Just not the digital read out on the ACC It's on always bright.