2018 Chevrolet Impala 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

23 Alternator / Generator parts are listed for the 2018 Chevrolet Impala, from PURE ENERGY, REMY, TERREPOWER and 8 other brands. SKP SK13529304 carries the "Popular" badge.

In the New grade, TYC, WAI GLOBAL, GM GENUINE and 5 other brands supply 12 parts: brand-new units rather than rebuilt ones. A representative part number is SKP SK13529304.

In the Remanufactured grade, ACDELCO, TERREPOWER, FVP and 3 other brands supply 11 parts: factory-rebuilt units with new wear components. A representative part number is ACDELCO 3342985.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

2 Alternator / Generator Pulley parts for the 2018 Chevrolet Impala come from 2 brands — DORMAN and LITENS.

Listed part numbers: DORMAN 300422 and LITENS 920034A.

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

This group shows a single part: GM GENUINE 13500158.

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

3 Automatic Headlamp Sensor parts for the 2018 Chevrolet Impala come from 2 brands — WELLS and GM GENUINE. Every part fits both the 2.5L L4 and the 3.6L V6.

Listed part numbers: GM GENUINE 13525289, WELLS 5S13758 and WELLS 5S13759.

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

5 Battery parts for the 2018 Chevrolet Impala come from 4 brands — ACDELCO, FVP, P1MAX and 1 other brand. The "Popular" part is FVP P94RAGM.

In the AGM (Extended Life) grade, ACDELCO, FVP and P1MAX supply 4 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is FVP P94RAGM.

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 FT85094R.

Listed part numbers: FVP P94RAGM, ACDELCO 94RAGMHR and ACDELCO 94RAGM, plus the other parts 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

2 Battery Cable parts are listed for the 2018 Chevrolet Impala, from GM GENUINE and STANDARD MOTOR PRODUCTS.

This group includes GM GENUINE 20781417 and STANDARD MOTOR PRODUCTS A122L.

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

3 Battery Current Sensor parts are listed for the 2018 Chevrolet Impala, from ACDELCO, HELLA and STANDARD MOTOR PRODUCTS.

This group includes ACDELCO 19535386, HELLA 010557431 and STANDARD MOTOR PRODUCTS BSC77.

This table covers the body-control modules that run lighting, locks and wipers. Read more

One part is listed for the 2018 Chevrolet Impala — GM GENUINE 13594692.

This table covers the brackets that mount the Body Control Module (BCM). Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2018 Chevrolet Impala — GM GENUINE 22818730.

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

This group shows a single part: BUSSMANN CB191125.

This table covers the Cruise Control Distance 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

This group shows a single part: DORMAN 601760.

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

One part is listed for the 2018 Chevrolet Impala — GM GENUINE 12667002.

This table covers the brackets that mount the Engine Control Module (ECM Computer). Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2018 Chevrolet Impala — GM GENUINE 22859944.

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

41 Fuse parts for the 2018 Chevrolet Impala come from 2 brands — BUSSMANN and GM GENUINE. The "Popular" part is BUSSMANN ATM10. They are grouped as 10 Amp, 100 Amp, 15 Amp, 150 Amp, 2 Amp, 20 Amp, 225 Amp, 25 Amp, 250 Amp, 3 Amp, 30 Amp, 300 Amp, 350 Amp, 4 Amp, 40 Amp, 450 Amp, 5 Amp, 50 Amp, 60 Amp, 7.5 Amp and 70 Amp, with 30 Amp the largest group at 5 parts from BUSSMANN and GM GENUINE.

This table covers the fuse blocks that hold this vehicle's fuses. Read more

3 Fuse Block parts are listed for the 2018 Chevrolet Impala, from DORMAN and GM GENUINE.

Part numbers include DORMAN 956555, DORMAN 956430 and GM GENUINE 20815889.

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

13 Horn parts for the 2018 Chevrolet Impala 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 receivers that pick up the key-fob unlock signal. Read more

GM GENUINE supplies both parts for the 2018 Chevrolet Impala.

Part numbers include GM GENUINE 13586853 and GM GENUINE 13523343.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

5 Keyless Entry Remote parts are listed for the 2018 Chevrolet Impala, from GM GENUINE and DORMAN. GM GENUINE 13531362 carries the "Popular" badge.

Part numbers include GM GENUINE 13531362, DORMAN 99122 and DORMAN 99121, among others listed above.

This table covers the Lane Departure Camera modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

3 Lane Departure Camera / Module parts are listed for the 2018 Chevrolet Impala, from DORMAN, STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include DORMAN 601964, STANDARD MOTOR PRODUCTS LDS14 and WELLS 8A1021.

This table covers the Park Assist (PAS) Camera modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

This group shows a single part: GM GENUINE 23411208.

This table covers the ultrasonic park-aid sensors in the bumper. 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

6 Parking Aid Sensor parts are listed for the 2018 Chevrolet Impala, from BOSCH, STANDARD MOTOR PRODUCTS, DORMAN and 3 other brands. BOSCH 0263043553 carries the "Popular" badge.

Listed part numbers: BOSCH 0263043553, STANDARD MOTOR PRODUCTS PPS46 and DORMAN 684048, plus the other parts above.

This table covers the totally-integrated power modules that distribute body electrical power. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

4 Power Supply Module (TIPM) parts for the 2018 Chevrolet Impala come from 2 brands — GM GENUINE and SHEE-MAR.

Listed part numbers: GM GENUINE 13599326, GM GENUINE 23368731 and GM GENUINE 23368732, plus the other parts above.

This table covers the Serial Data Gateway modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

One part is listed for the 2018 Chevrolet Impala — GM GENUINE 13599318.

This table covers the Side Object Sensor modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

GM GENUINE supplies both parts for the 2018 Chevrolet Impala.

Part numbers include GM GENUINE 84087756 and GM GENUINE 84664804.

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

12 Speed Sensor parts for the 2018 Chevrolet Impala come from 4 brands — HOLSTEIN, GM GENUINE, DELPHI and 1 other brand. The "Popular" part is GM GENUINE 24276627.

The Economy section lists 4 options from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2VSS0155 is listed in this group.

Standard Replacement: 8 parts, from GM GENUINE, DELPHI and STANDARD MOTOR PRODUCTS. A representative part number is GM GENUINE 24276627.

This table covers the Speed Sensor Reluctor rings. Read more

4 Speed Sensor Reluctor Ring parts for the 2018 Chevrolet Impala come from GM GENUINE.

Part numbers include GM GENUINE 24230744, GM GENUINE 24232557 and GM GENUINE 24223802, among others listed above.

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 2018 Chevrolet Impala — GM GENUINE 24234865.

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

7 Starter Motor parts are listed for the 2018 Chevrolet Impala, from TYC, WAI GLOBAL, ACDELCO and 4 other brands. ACDELCO 3362275A carries the "Popular" badge.

New: 2 parts, from TYC and WAI GLOBAL. A representative part number is TYC 119259.

Remanufactured: 5 parts, from ACDELCO, PURE ENERGY, FVP and 2 other brands. A representative part number is ACDELCO 3362275A.

This group includes ACDELCO 3362275A, TYC 119259 and WAI GLOBAL 10700N and the remaining parts above.