20 Most Recent 1999 Buick LeSabre - Page 2 Questions & Answers

It could be a wiring issue. Are you are using the correct bulb?

could be a problem starter relay or starter solenoid if the battery lead goes straight to the starter , pull the starter and have it bench tested

Here's a quick and easy DIY for cleaning your car's headlight lenses: How to Easily Clean Automobile Headlight Lenses

The key cylinder sensor may be faulty. if you would like to bypass the system (works only if Passlock security module is ok) follow the link. How To Permanently Disable GM PassLock System

Hello xxgraffiti87, Entire TELEPHONE offices have been caught in MUD-SLIDES: The documented recovery process is to IMMEDIATELY remove all power... Water wash (fire hose) the equipment... Air pressure clean the equipment and place massive fans while measuring humidity... Restore power ONLY when humidity is at or below normal. All that to avoid ELECTROLYSIS... ~~ In addition to the Battery distribution... you have a GROUND distribution... If you suspect an OPEN circuit... it is an IDEAL APPLICATION for a wire TONE-TRACER ... (see example below) (they ONLY work on "open" circuits... You may have to pull a fuse of bulb to PROPERLY trace... but it can find a multitude of troubles) BEFORE you get to very exotic about key readers, transponders... ELECTRONICS (et al).. You need to check your BODY grounds (specifically)... Lights working/not working is a good sign... What SHOULD have been done was to REMOVE ALL POWER... (keep off until totally dry)... WD40... & compressed air... LOTs. NOW... you might be able to clean corrosion with commercial corrosion cleaners... Brass bristle brush ... (try not to remove or further damage the FACTORY SURFACE). No sloshing or firehoses... I use white vinegar & Q-Tips... Followed with clean water... then Isopropyl Alcohol (70% or better)... Lots of AIR... AIR DRY (for days)... Sparingly apply a anti-oxidant (again... I first apply WD40... (water displacement) Clean it all away & apply white lithium grease... WD40 also sell a WHITE LITHIUM GREASE... Do not confuse with the WATER DISPLACEMENT PRODUCT...!! WD 40 Wikipedia With power applied corrosion/oxidation will grow quickly & should be easily seen... Use FREE wiring diagrams to find main ground clusters. (see below) brass wire, clean & dry all connections... apply white lithium grease ... (very sparingly to any visible corrosion) Sealed units (like headlight relays... You have a BUNCH) You might want to consider going to a wreaking yard with a picnic basket... If they got submerged... it is HIGHLY LIKELY they are STILL MOIST (inside)... and will only get worse. FREE drawings... (and Tech Bulletins) at BBB Industries website (registration required) BBB Industries Premium Alternators Starters Power Steering Products TONE TRACER... Extech TG20 Wire Tracer and Tone Generator Amazon com Hope this helps. Carnac the Magnificent

disconnecting the battery may reset it

computer needs to be program ...

take you car to autozone and let them check the battery and stuff and tell them to do a load test and post it on here

Have the engine control module scanned for fault codes, that is the first step.

Unless you know how to do automotive electrical testing suggest you take it to a qualified repair shop .

Quickest way is by removing the fuse that supplies power to the interior lights.

14 or 15mm

Relay Driven Dual Cooling Fan Diagnostics

What about it ? oh by the way there are three relays . What fan ? Radiator or blower motor

No. The barometric is built into the MAF sensor. The map sensor on you car is by the coil pack for 3.1 engines. On 3.8 it is on the plenum in the center at the front of the engine.

splice in a new one or if from connector to ground replace whole line --

it sounds like you might have a crank sensor that is going bad. When it does not start check for spark and injector pulse. If both are missing than it is very likely a bad crank sensor. If there is no spark but injector pulse than the crank sensor is working and you may have an issue with the ignition module. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa