Just got a low mileage, one-owner, 1999 Grand Marquis LS & am wondering what the actual differences in a GS & LS are.
Does anyone KNOW??

yours, tex

 

'95 MERC at Flaming Gorge, Utah
Hello, Tex, and welcome to the Mercury Forums.
Looks like you got hold of a fine automobile -- it should last for MANY more years, and provide a plenty of comfort and safety.
Click my name for info on my '95 Marquis restoration -- and some pictures. You may want to incorporate some parts, or do some of the modifications to your own rig.
The differences between the GS and LS models of the Grand Marquis are centered around the Options Packages.
The Engines, Transmissions, Rear-End Gears, and Suspensions are identical between models.
The GS has the analog dashboard -- the LS has the digital electronic dashboard.
The GS has Manual Temperature Controls, the LS Temp Controls are Automatic.
To see ALL of the differences for your particular year, Google the Make, Year, and Models that interest you.

 

95 MERC,

THANKS for the kind welcome.

Since I posted about the 1995 LS with 86,000 miles (which looks quite like your 1995), I've found & am going to go pick up a 1996 NAVY BLUE/gray cloth interior GS with 48,000 original miles on it from near La Porte, TX.
(The GS looks almost "as new". = It was the "4th car" of a 81YO/retired COL/06 in the Army, who passed away suddenly in AUG18. = The Navy-Blue 1995 was bought for the COL's wife, who seldom drove it & passed away in 2013.)

I just couldn't resist buying that one from the COL's estate. - It has FOUR almost new Michelin tires on it.

So I will soon have TWO similar Grand Marquis to detail/restore.
(I suspect that my adult daughter will end up getting the 1996 for her birthday, this year. = My "Noemi" is a "car chick" & I believe will love the Blue car.)

ADDENDA: What exactly have you done to your Marquis to improve it??
(I have "the feeling" that the photo that you posted was supposed to "open" a video but couldn't get it to do so.)

yours, tex

 

1995 Grand Marquis GS Restoration.
Engine is basically stock.
Items marked with "#" are/were available for purchase at Amazon.com.
Intake Air Box Snorkel removed - cool air is ducted from forward of the engine compartment.
# K&N *33-2272 Re-usable Air Filter.
# Bosch *69128 Electric Fuel Pump.
# Bosch *68015 In-Tank Fuel Filter
# Mallory *4213 Adjustable Fuel Pressure Regulator -- 35 psi. @ 800 rpm.
# Bosch *4809 Series 3 - 19 lb. Fuel Injectors.
# Bosch *09725 Mag-Core Ignition Wires.
# Bosch *9605 Double-Iridium Spark Plugs.
# Motorcraft *PW357 Water Pump.
# Motorcarft *RT1234 Thermostat.
# Motorcraft *YB541 Fan Clutch.
# Bosch *15717 Oxygen Sensors.(4)
# Bosch *SR7533N Starter.
# Bosch *AL7537N 130-Amp Alternator.
# Gates *K060980RPM RPM Series Serpentine Belt.
# Gates *38386 DriveAlign Belt Tensioner.
# Motorcraft *KM2973 Upper Radiator Hose.
# Motorcraft *KM2973 Lower Radiator Hose Assembly.
# Dorman *624-107 Electric Fan Assembly
# Motorcraft *YCC166 Air Conditioning Compressor
# Four Seasons *38904 Severe Service Orifice Tube
# Behr *351214031 PAO Compressor Oil
# Dual Exhaust - Walker *40383 H-pipe.
# MagnaFlow *18134 - 2" x 3.5" x 24" Glasspacks.
# Walker Tail Pipes - *46761(right side); *46789 (left side)
# Superior *28-6201 2 1/2" x 6" Stainless Steel, Slant-cut Exhaust Tips
# B&M *70268 13,000 b.t.u. Transmission Cooler.
# B&M *40264 Transmission Shift Improver Kit.
# B&M *80250 Transmission Drain Plug.
# XPERT Performance Cast Aluminum Differential Girdle.
# LubeLocker *LLR-F880 Differential Gasket
# Energy Suspension *4.3150G Urethane Control Arm Bushings (front, upper & lower)
# MOOG Greasable Ball Joints, Tie Rods, Idler Arm. (front)
# MOOG *K8853 Greaseable End Links (front).
# Motorcraft *HUB3 Wheel Bearing Hubs
# ADDCO 1 1/4th" Front Anti-Sway Bar, with Energy Suspension Greasable Urethane Bushings.
# ADDCO 1" Rear Anti-Sway Bar, Urethane Bushings.
# Energy Suspension End Links with Urethane Bushings (rear).
Eclipse Brake Calipers (front & rear).
# ACDelco Drilled & Slotted Brake Rotors (front & rear).
# Motorcraft Police Brake Pads (front & rear).
# D.O.T. 4 Hi-Temp Brake Fluid.
# 98T Goodyear Assurance ComforTread Touring Tires.
5 "Italian Lace" 15" alloy wheels (includes spare).
# HELLA *980860801 Daytime Running Lights.
# Dorman *38445 Door Strikers
# Garmin *66LMT Navigation
Custom headliner by "Hot Rod Interiors", Glendale, AZ.
Dual exhaust fitted by "MufflerMasters", Avondale, AZ
** - All parts installed on this restoration are guaranteed to be GLUTEN-FREE.
*** - No animals were harmed during this restoration.
Attached Thumbnails

 

95MERC,

THANKS Chuck for your laundry list of improvements for your Marquis. = Sounds like what I need to do the same work to the '95 LS, as I plan to use it as a daily driver.

Once I get the Blue 1996 "in hand" & have had the work completed on the White 1995, I'll likely have Steve (my "part-time mechanic") start on Noemi's "birthday present".
(Steve is partially disabled & does my work when he feels like doing it. = NO RUSH in the case of the Blue GS.)

THANKS AGAIN, tex