2018 Chevrolet Express 2500 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 for the 2018 Chevrolet Express 2500 come from 10 brands — TERREPOWER, GM GENUINE, WAI GLOBAL and 7 other brands. The "Popular" part is GM GENUINE 84206550.

The New section lists 12 options from GM GENUINE, WAI GLOBAL, SKP and 3 other brands — brand-new units rather than rebuilt ones. GM GENUINE 84206550 is listed in this group.

The Remanufactured section lists 11 options from PURE ENERGY, REMY, TERREPOWER and 2 other brands — factory-rebuilt units with new wear components. BOSCH AL8894X is listed in this group.

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

One part is listed for the 2018 Chevrolet Express 2500 — BOSCH 1986AE1308.

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

GM GENUINE supplies both parts for the 2018 Chevrolet Express 2500.

Listed part numbers: GM GENUINE 23349780 and GM GENUINE 20901252.

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

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 13498957.

This table covers the backup alarms that sound in reverse. Read more

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 23239058.

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 are listed for the 2018 Chevrolet Express 2500, from DEKA, ACDELCO, FVP and 1 other brand. DEKA 9A78DT carries the "Popular" badge.

The AGM (Extended Life) section lists 4 options from DEKA, ACDELCO and FVP — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A78DT is listed in this group.

The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT82578 is listed in this group.

This group includes DEKA 9A78DT, ACDELCO 78XAGM and DEKA 9A78 and the remaining 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

9 Battery Cable parts for the 2018 Chevrolet Express 2500 come from GM GENUINE. The "Popular" part is GM GENUINE 22848162.

This group includes GM GENUINE 22848162, GM GENUINE 23220933 and GM GENUINE 84248858 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

This group shows a single part: GM GENUINE 13505369.

This table covers the clamps and brackets that secure the battery. Read more

This group shows a single part: DORMAN 390030.

This table covers the Battery Terminal Bolt nuts. Read more

2 Battery Terminal Bolt / Nut parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

This group includes GM GENUINE 19115561 and GM GENUINE 11570961.

This table covers the trays the battery sits in. Read more

One part is listed for the 2018 Chevrolet Express 2500 — DORMAN 00090.

This table covers the brackets that mount the Battery Tray. 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 Express 2500 — DORMAN 700251.

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

2 Body Control Module (BCM) parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

This group includes GM GENUINE 84922494 and GM GENUINE 22915542.

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

This group shows a single part: GM GENUINE 23231327.

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

BUSSMANN supplies both parts for the 2018 Chevrolet Express 2500.

The 25 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. BUSSMANN CB21225 is listed in this group.

The 30 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. BUSSMANN CB21230 is listed in this group.

This group includes BUSSMANN CB21225 and BUSSMANN CB21230.

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

2 Engine Control Module (ECM Computer) parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

This group includes GM GENUINE 19433027 and GM GENUINE 12692201.

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

This group shows a single part: GM GENUINE 25840191.

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

37 Fuse parts are listed for the 2018 Chevrolet Express 2500, from BUSSMANN, GM GENUINE and ACDELCO. BUSSMANN ATM10LP carries the "Popular" badge. They are grouped as 10 Amp, 100 Amp, 125 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 and 70 Amp, with 20 Amp the largest group at 4 parts from BUSSMANN and GM GENUINE.

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

This group shows a single part: GM GENUINE 15151221.

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

14 Horn parts are listed for the 2018 Chevrolet Express 2500, from FIAMM and GM GENUINE. FIAMM 7210223 carries the "Popular" badge.

In the Accessory Replacement grade, FIAMM supplies 7 parts: grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. A representative part number is FIAMM 7210223.

The Standard Replacement section lists 7 options from FIAMM and GM GENUINE — built to original-equipment specification. FIAMM 7201223 is listed in this group.

This table covers the horn contacts in the steering column. Read more

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 25889495.

This table covers the receivers that pick up the key-fob unlock signal. Read more

This group shows a single part: GM GENUINE 20863945.

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

4 Keyless Entry Remote parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

Part numbers include GM GENUINE 22849638, GM GENUINE 20877108 and GM GENUINE 22953234, among others listed above.

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

2 Keyless Entry Remote Case parts for the 2018 Chevrolet Express 2500 come from DORMAN.

Part numbers include DORMAN 13636 and DORMAN 13636US.

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

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 22743052.

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

10 Parking Aid Sensor parts for the 2018 Chevrolet Express 2500 come from 10 brands — BOSCH, STANDARD MOTOR PRODUCTS, AUTOTECNICA and 7 other brands. The "Popular" part is BOSCH 0263043551.

This table covers the brackets that mount the Parking Aid Sensor. 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

2 Parking Aid Sensor Bracket parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

Part numbers include GM GENUINE 22801410 and GM GENUINE 22801411.

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

GM GENUINE supplies both parts for the 2018 Chevrolet Express 2500.

This group includes GM GENUINE 23323480 and GM GENUINE 13599326.

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

This group shows a single part: GM GENUINE 84434829.

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

4 Speed Sensor parts are listed for the 2018 Chevrolet Express 2500, from GPD, HOLSTEIN, DELPHI and 1 other brand.

In the Economy grade, GPD and HOLSTEIN supply 2 parts: the catalog's value-priced group. A representative part number is GPD 1816491.

The Standard Replacement section: 2 options from DELPHI and STANDARD MOTOR PRODUCTS. DELPHI SS12245 is listed in this group.

Part numbers include GPD 1816491, HOLSTEIN 2VSS0527 and DELPHI SS12245, among others listed above.

This table covers the Starter bolts. Read more

2 Starter Bolt parts for the 2018 Chevrolet Express 2500 come from 2 brands — DORMAN and GM GENUINE.

This group includes 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

10 Starter Motor parts for the 2018 Chevrolet Express 2500 come from 7 brands — REMY, BOSCH, TERREPOWER and 4 other brands. The "Popular" part is GM GENUINE 12637617.

The New section: 5 options from GM GENUINE, REMY, BOSCH and 2 other brands. GM GENUINE 12637617 is listed in this group.

The Remanufactured section: 5 options from BOSCH, FVP, PURE ENERGY and 2 other brands. BOSCH SR8600X is listed in this group.

This table covers the Starter Motor Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on. Read more

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 12668713.

This table covers the regulators that control alternator output voltage. Read more

One part is listed for the 2018 Chevrolet Express 2500 — BOSCH 1986AE0081.

This table covers the Wiring Harness clips. Read more

3 Wiring Harness Clip parts for the 2018 Chevrolet Express 2500 come from 2 brands — DORMAN and GM GENUINE.

Listed part numbers: DORMAN 700365, DORMAN 963058 and GM GENUINE 12337820.

This table covers the Yaw 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

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 87845214.