2003 Buick Lesabre Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

11 Alternator / Generator parts are listed for the 2003 Buick Lesabre, from ACDELCO, PURE ENERGY, REMY and 4 other brands. ACDELCO 3351084 carries the "Popular" badge.

In the New grade, ACDELCO, WAI GLOBAL, BOSCH and 3 other brands supply 6 parts: brand-new units rather than rebuilt ones. A representative part number is ACDELCO 3351084.

In the Remanufactured grade, ACDELCO, FVP, PURE ENERGY and 2 other brands supply 5 parts: factory-rebuilt units with new wear components. A representative part number is ACDELCO 3342524A.

This table covers the Anti-Theft control modules. Read more

This group shows a single part: GM GENUINE 10355946.

This table covers the Automatic Headlamp sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

2 Automatic Headlamp Sensor parts for the 2003 Buick Lesabre come from 2 brands — GM GENUINE and STANDARD MOTOR PRODUCTS.

This group includes GM GENUINE 13498958 and STANDARD MOTOR PRODUCTS EFL172.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

2 Battery parts for the 2003 Buick Lesabre come from 2 brands — DEKA and FULLRIVER.

In the AGM (Extended Life) grade, DEKA supplies 1 part: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A78.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT82578.

This group includes DEKA 9A78 and FULLRIVER FT82578.

This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

STANDARD MOTOR PRODUCTS supplies the 4 Battery Cable parts for the 2003 Buick Lesabre.

This group includes STANDARD MOTOR PRODUCTS A202D, STANDARD MOTOR PRODUCTS A332L and STANDARD MOTOR PRODUCTS A522LTF and the remaining parts above.

This table covers the terminals and clamps that connect cables to the battery posts. Read more

This group shows a single part: DEKA 00351.

This table covers the covers that protect battery terminals. Read more

3 Battery Terminal Protector parts for the 2003 Buick Lesabre come from 2 brands — GM GENUINE and DORMAN.

This group includes DORMAN 60300, GM GENUINE 12010050 and GM GENUINE 19119011.

This table covers the Battery Vent tubes. Read more

3 Battery Vent Tube parts are listed for the 2003 Buick Lesabre, from DORMAN, GM GENUINE and SKP.

Listed part numbers: DORMAN 924252, GM GENUINE 25720112 and SKP SK924252.

This table covers the resettable circuit breakers in this vehicle's electrical system. Read more

2 Circuit Breaker parts for the 2003 Buick Lesabre come from 2 brands — BUSSMANN and LITTELFUSE.

This group includes BUSSMANN CB21230 and LITTELFUSE MIB30.

This table covers the flasher units that blink the turn signals and hazards. Read more

This group shows a single part: TRIDON / NOVITA LM442.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

28 Fuse parts for the 2003 Buick Lesabre come from 2 brands — BUSSMANN and LITTELFUSE. The "Popular" part is BUSSMANN ATM10. They are grouped as 10 Amp, 15 Amp, 2 Amp, 20 Amp, 30 Amp, 40 Amp and 50 Amp, with 20 Amp the largest group at 6 parts from BUSSMANN and LITTELFUSE.

This table covers the horns mounted in the front of the vehicle. Read more

13 Horn parts for the 2003 Buick Lesabre come from 2 brands — FIAMM and GM GENUINE. The "Popular" part is FIAMM 72112.

The Accessory Replacement section lists 6 options from FIAMM — grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. FIAMM 72112 is listed in this group.

In the Standard Replacement grade, FIAMM and GM GENUINE supply 7 parts: built to original-equipment specification. A representative part number is FIAMM 7200223.

This table covers the replacement shells for the key fob. Read more

One part is listed for the 2003 Buick Lesabre — DORMAN 13638.

This table covers the powertrain-control modules that run engine and transmission. Read more

2 Powertrain Control Module (PCM) parts for the 2003 Buick Lesabre come from 2 brands — ACDELCO and CARDONE.

Listed part numbers: ACDELCO 21812377 and CARDONE 773826F.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

22 Speed Sensor parts for the 2003 Buick Lesabre come from 13 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, DORMAN and 10 other brands. The "Popular" part is SKP SK917644.

The Economy section lists 8 options from DORMAN, HOLSTEIN, SKP and 3 other brands — the catalog's value-priced group. SKP SK917644 is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 24091045 is listed in this group.

Standard Replacement: 13 parts, from GM GENUINE, DELPHI, STANDARD MOTOR PRODUCTS and 5 other brands. A representative part number is ACDELCO 2134666.

This table covers the Speed Sensor Reluctor Thrust washers. Read more

This group shows a single part: GM GENUINE 24230403.

This table covers the seals at the Speed Sensor. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 2003 Buick Lesabre — GM GENUINE 10475299.

This table covers the Starter bolts. Read more

2 Starter Bolt parts are listed for the 2003 Buick Lesabre, from DORMAN and GM GENUINE.

Part numbers include DORMAN 72004 and GM GENUINE 11610633.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

13 Starter Motor parts are listed for the 2003 Buick Lesabre, from PURE ENERGY, REMY, ACDELCO and 5 other brands. PURE ENERGY 6484MSN carries the "Popular" badge.

New: 7 parts, from PURE ENERGY, REMY, TYC and 4 other brands. A representative part number is PURE ENERGY 6484MSN.

Remanufactured: 6 parts, from ACDELCO, BOSCH, FVP and 3 other brands. A representative part number is ACDELCO 3361924A.