2009 Cadillac CTS 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

7 Alternator / Generator parts for the 2009 Cadillac CTS come from 7 brands — GM GENUINE, WAI GLOBAL, DENSO and 4 other brands. The "Popular" part is GM GENUINE 23480515.

The New section lists 2 options from GM GENUINE and WAI GLOBAL — brand-new units rather than rebuilt ones. GM GENUINE 23480515 is listed in this group.

The Remanufactured section lists 5 options from DENSO, ACDELCO, PURE ENERGY and 2 other brands — factory-rebuilt units with new wear components. DENSO 2101224 is listed in this group.

Part numbers include GM GENUINE 23480515, WAI GLOBAL 11513N and DENSO 2101224, among others listed above.

This table covers the Antenna 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 2009 Cadillac CTS — ACDELCO 22802157.

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 are listed for the 2009 Cadillac CTS, from GM GENUINE and STANDARD MOTOR PRODUCTS.

Listed part numbers: 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

7 Battery parts are listed for the 2009 Cadillac CTS, from ACDELCO, DEKA, LUCAS and 3 other brands. DEKA 9A48 carries the "Popular" badge.

Listed part numbers: DEKA 9A48, LUCAS LBAGM004A and ACDELCO 48AGM, plus the other 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

3 Battery Current Sensor parts for the 2009 Cadillac CTS come from 3 brands — GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS.

This group includes GM GENUINE 13505369, STANDARD MOTOR PRODUCTS SBC111 and WELLS 5S6706.

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 body-control modules that run lighting, locks and wipers. Read more

3 Body Control Module (BCM) parts for the 2009 Cadillac CTS come from GM GENUINE.

Part numbers include GM GENUINE 84922494, GM GENUINE 22787940 and GM GENUINE 22860591.

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

One part is listed for the 2009 Cadillac CTS — GM GENUINE 19116527.

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

2 Engine Control Module (ECM Computer) parts for the 2009 Cadillac CTS come from GM GENUINE.

Listed part numbers: GM GENUINE 19421504 and GM GENUINE 12678512.

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

LITTELFUSE supplies the 9 Fuse parts for the 2009 Cadillac CTS. LITTELFUSE MIN20 carries the "Popular" badge.

The 10 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE LMIN10 is listed in this group.

In the 15 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MIN15.

In the 20 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MIN20.

The 30 Amp section lists 2 options from LITTELFUSE — grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE JCAS30 is listed in this group.

In the 40 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE JCAS40.

The 50 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "50 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE JCAS50 is listed in this group.

In the 60 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "60 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE JCAS60.

In the 7.5 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "7.5 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MIN75.

Part numbers include LITTELFUSE MIN20, LITTELFUSE LMIN10 and LITTELFUSE MIN15, among others listed above.

This table covers the HID Lighting ballasts. Read more

4 HID Lighting Ballast parts for the 2009 Cadillac CTS come from 4 brands — AUTOTECNICA, DORMAN, STANDARD MOTOR PRODUCTS and 1 other brand.

Listed part numbers: AUTOTECNICA CA1320411, DORMAN 601172 and STANDARD MOTOR PRODUCTS HID160, plus the other parts above.

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

14 Horn parts are listed for the 2009 Cadillac CTS, 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 2009 Cadillac CTS — GM GENUINE 25889495.

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

5 Keyless Entry Remote parts for the 2009 Cadillac CTS come from 2 brands — GM GENUINE and DORMAN. The "Popular" part is GM GENUINE 25943676.

Part numbers include GM GENUINE 25943676, DORMAN 99110 and DORMAN 99525ST, among others listed above.

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

This group shows a single part: DORMAN 13617.

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

5 Parking Aid Sensor parts for the 2009 Cadillac CTS come from 4 brands — GM GENUINE, BOSCH, SKP and 1 other brand. The "Popular" part is BOSCH 0263043551.

Part numbers include BOSCH 0263043551, GM GENUINE 20777093 and GM GENUINE 20914917, among others listed above.

This table covers the Rain 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: HELLA 011178861.

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

18 Speed Sensor parts are listed for the 2009 Cadillac CTS, from STANDARD MOTOR PRODUCTS, HOLSTEIN, WALKER PRODUCTS and 7 other brands. SKP SK917644 carries the "Popular" badge.

In the Economy grade, HOLSTEIN, SKP, GPD and 1 other brand supply 5 parts: the catalog's value-priced group. A representative part number is SKP SK917644.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 24091045.

The Standard Replacement section: 12 options from GM GENUINE, DELPHI, NTK and 4 other brands. ACDELCO 2134666 is listed in this group.

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

This group shows a single part: GM GENUINE 10475299.

This table covers the Starter bolts. Read more

This group shows a single part: DORMAN 72004.

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 2009 Cadillac CTS come from 7 brands — REMY, BOSCH, TERREPOWER and 4 other brands. The "Popular" part is REMY 96240.

The New section: 4 options from REMY, BOSCH, TERREPOWER and 1 other brand. REMY 96240 is listed in this group.

The Remanufactured section: 6 options from GM GENUINE, BOSCH, FVP and 3 other brands. GM GENUINE 3231660 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 2009 Cadillac CTS — GM GENUINE 12668713.