1993 LeSabre: all lights work checked all fuses breakers and r...

Chances are its one of the fuseable links at the starter. The car gets some of its power thru those wires. They look like regular wires except they have an internal fuse. You may need a wiring diagram to figure out which circuit is affected.

check battery,battery cables,starter,starer solenoid, check if your battery have any power left, by turning lights on, if light is strong then on the starter motor,remove the remote wire, the thin wire connected to the starter from the ign. switch, instead of the remote cable, try to by pass it, with battery voltage, with ign switch on on pasition, if your starter works the starter is good if not change the estater, if starter works then check the remote wire, could be damage, could be the starter switch, fuse , or the starter relay. when working on car always make sure if the engine starts there is rotsting components. Thanks

door loocks run off a relay mounted under the dash and a circuit breaker mounted in the fuse block

check the relays and check other blown fuses because other fuses can affect it

if there is no power to the fuel pump check relays and fuses....UNDERHOOD FUSE & RELAY PANEL IDENTIFICATION Fig. 2: Underhood Fuse & Relay Panel Identification Courtesy of ISUZU MOTOR CO. Fusible Link Identification ? A - 80 Amp (1991-92 3.1L) ? A - 60 Amp Main-1 ? B - 30 Amp Main-2 ? C - 30 Amp (1993-94) ECM (3.2L) ? D - 30 Amp Condenser Fan (A/T Models) Relay Identification ? 1 - Headlight Relay ? 2 - A/C - Heater Relay ? 3 - Starter Relay ? 4 - A/C Compressor Relay ? 5 - Charge Relay ? 6 - Fuel Pump Relay ? 7 - ECM Relay ? 8 - Wiper Relay Fuse & Circuit Breaker Identification ? 1 - 15 Amp (1991) ECM, Fuel Injection System ? 1 - 15 Amp (1992-94 2.6L) ECM, Fuel Injection System ? 1 - 10 Amp (1992-94 3.1 & 3.2L) Heated Oxygen Sensor, Fuel Injection System ? 2 - 20 Amp (1991-92) Fuel Pump ? 2 - 20 Amp (1993-94 2.6L) Fuel Pump ? 2 - 15 Amp (1993-94 3.2L) Fuel Pump ? 3 - 10 Amp (1991) ? 3 - 15 Amp (1992-94) Turn Signal Lights, Hazard Warning Flasher Lights ? 4 - 10 Amp Horn, Door Locks ? 5 - Not Used (1991 3.1L) ? 5 - 10 Amp Charging System, Charge Warning Light WARNING: Always disconnect battery ground cable before servicing "high- current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician. Page 1 of 2 FUSES & CIRCUIT BREAKERS -1994 Isuzu Rodeo LS? 6 - Not Used (1991) (1992-93 2.6L) ? 6 - 10 Amp (1992-94 3.1L & 3.2L) A/T Interlock System ? 6 - 10 Amp (1994 2.6L) Heated Oxygen Sensor, Fuel Injection System ? 7 - 20 Amp Heater/Air Conditioning Blower Controls ? 8 - 10 Amp Air Conditioner Compressor Controls ? 9 - 10 Amp Right Headlight ? 10 - 10 Amp Left Headlight © 2008 Mitchell Repair Information Co., LLC.

Underhood fuse block swap out relay #7 thats the ECM relay.
Ground Circuits Using a DVOM, touch negative voltmeter lead to a good ground. Touch positive voltmeter lead to each ground terminal. With vehicle running, voltmeter should indicate less than one volt. If reading is greater than one volt, check for open, corrosion and loose connection on ground lead. See ECM GROUND LOCATION table for ECM ground location.
Page 1 of 1 SYSTEM/COMPONENT TESTS - 2.6L EFI -1994 Isuzu Rodeo

http://www.wiringdiagrams21.com/2009/07/13/1993-buick-lesabre-fuse-relay-and-circuit-breakers

hi i jumbed started the car at the starter, the car would crank to start but the car would not run , but it will crank normal , but because the security light is flashing the car would not start, i tried to leave the ignition on for 10-15 minu but the light keep on flashing and the car still would not start , 1993 buick lesabre , now would it be the neutrul safty swich causing this, i tried to start in N but nothig happend , please give me a full answer

check all fuses in power distribution center near battery and make sure all wires you removed from starter went back on starter and not hanging somewhere. There is a possibility that before you changed the starter there was something wrong that was causing the starter not to operate. Also check that power is going to and out of the ignition switch and starter relay (relay also powers up the ignition system which is why you have no fire)

GM usually puts the Fuse Diagram in the Back of the Owners Manual.

If the signal lights don't work on either side, front and back, check the flasher, usually located on the fuse block. If this isn't it, let me know, we can continue from that point.