2005 Buick Lacrosse 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

9 Alternator / Generator parts are listed for the 2005 Buick Lacrosse, from PURE ENERGY, TYC, WAI GLOBAL and 5 other brands. TYC 211127 carries the "Popular" badge.

In the New grade, TYC, WAI GLOBAL and PURE ENERGY supply 3 parts: brand-new units rather than rebuilt ones. A representative part number is TYC 211127.

In the Remanufactured grade, ACDELCO, BOSCH, FVP and 3 other brands supply 6 parts: factory-rebuilt units with new wear components. A representative part number is ACDELCO 3342993.

Listed part numbers: TYC 211127 and WAI GLOBAL 11126N, plus the other parts above.

This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

This group shows a single part: BOSCH 1986AE1308.

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

4 Automatic Headlamp Sensor parts for the 2005 Buick Lacrosse come from 3 brands — GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include GM GENUINE 13498957, GM GENUINE 13498958 and STANDARD MOTOR PRODUCTS EFL172, among others listed above.

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

7 Battery parts for the 2005 Buick Lacrosse come from 6 brands — FULLRIVER, ACDELCO, FVP and 3 other brands. The "Popular" part is ACDELCO 34XAGM.

In the AGM (Extended Life) grade, ACDELCO, FVP, DEKA and 2 other brands supply 5 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO 34XAGM.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 2 parts: 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 FT82534.

Part numbers include ACDELCO 34XAGM, FVP 34AGMG and DEKA 9A34, among others listed above.

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

8 Battery Cable parts are listed for the 2005 Buick Lacrosse, from ACDELCO, DEKA, GM GENUINE and 1 other brand. ACDELCO 4BC55 carries the "Popular" badge.

This group includes ACDELCO 4BC55, ACDELCO 4BC49 and DEKA 00875 and the remaining parts above.

This table covers the Battery Current 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 Battery Current Sensor parts are listed for the 2005 Buick Lacrosse, from GM GENUINE and WELLS.

Part numbers include GM GENUINE 13505369 and WELLS 5S6706.

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

2 Battery Terminal parts for the 2005 Buick Lacrosse come from DEKA.

This group includes DEKA 00350 and DEKA 01056.

This table covers the Battery Terminal Bolt nuts. Read more

One part is listed for the 2005 Buick Lacrosse — STANDARD MOTOR PRODUCTS BP119.

This table covers the engine-control modules that run fuel, spark and emissions. Read more

2 Engine Control Module (ECM Computer) parts are listed for the 2005 Buick Lacrosse, from ACDELCO and GM GENUINE.

This group includes ACDELCO 21812695 and GM GENUINE 12591278.

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

2 Flasher parts for the 2005 Buick Lacrosse come from 2 brands — CEC INDUSTRIES and TRIDON / NOVITA.

Part numbers include CEC INDUSTRIES EF28 and TRIDON / NOVITA EP28.

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 2005 Buick Lacrosse come from 2 brands — BUSSMANN and LITTELFUSE. The "Popular" part is BUSSMANN ATM10. Grades run from 10 Amp through 50 Amp; 10 Amp is the most populated section, led by LITTELFUSE and BUSSMANN.

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

13 Horn parts for the 2005 Buick Lacrosse 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 key fobs that lock, unlock and start the vehicle. Read more

4 Keyless Entry Remote parts are listed for the 2005 Buick Lacrosse, from GM GENUINE and STANDARD MOTOR PRODUCTS.

Part numbers include GM GENUINE 22733523, GM GENUINE 15252034 and GM GENUINE 22733524, among others listed above.

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

DORMAN supplies the 3 Keyless Entry Remote Case parts for the 2005 Buick Lacrosse.

Listed part numbers: DORMAN 13636, DORMAN 13624 and DORMAN 13636US.

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

2 Powertrain Control Module (PCM) parts for the 2005 Buick Lacrosse come from BSE.

Part numbers include BSE PCM21003MU and BSE PCM21003U.

This table covers the capacitors that suppress radio noise. Read more

This group shows a single part: GM GENUINE 25073556.

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

20 Speed Sensor parts for the 2005 Buick Lacrosse come from 12 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, DORMAN and 9 other brands. The "Popular" part is SKP SK917644.

The Economy section lists 6 options from DORMAN, SKP, BWD/NIEHOFF and 2 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 2005 Buick Lacrosse — GM GENUINE 10475299.

This table covers the Starter bolts. Read more

2 Starter Bolt parts are listed for the 2005 Buick Lacrosse, 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 2005 Buick Lacrosse, from PURE ENERGY, REMY, ACDELCO and 5 other brands. PURE ENERGY 6484MSN carries the "Popular" badge.

New: 6 parts, from PURE ENERGY, REMY, ACDELCO and 3 other brands. A representative part number is PURE ENERGY 6484MSN.

Remanufactured: 7 parts, from GM GENUINE, ACDELCO, BOSCH and 4 other brands. A representative part number is GM GENUINE 3231627.