2021 Cadillac CT4 Ignition Parts

This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor. Read more

5 Camshaft Position Sensor parts for the 2021 Cadillac CT4 come from 5 brands — GM GENUINE, DELPHI, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is GM GENUINE 12733487.

Part numbers include GM GENUINE 12733487, DELPHI SS12441 and STANDARD MOTOR PRODUCTS PC1236, among others listed above.

This table covers the seals at the Camshaft Position 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 2021 Cadillac CT4 — GM GENUINE 12626252.

This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor. Read more

5 Crankshaft Position Sensor parts for the 2021 Cadillac CT4 come from 5 brands — SPECTRA PREMIUM, GM GENUINE, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is GM GENUINE 12706708.

The Economy section lists 1 option from SPECTRA PREMIUM — the catalog's value-priced group. SPECTRA PREMIUM S10570 is listed in this group.

In the Standard Replacement grade, GM GENUINE, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 1 other brand supply 4 parts: built to original-equipment specification. A representative part number is GM GENUINE 12706708.

Part numbers include GM GENUINE 12706708, SPECTRA PREMIUM S10570 and STANDARD MOTOR PRODUCTS PC1242, among others listed above.

This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off. Read more

5 Ignition Coil parts for the 2021 Cadillac CT4 come from 4 brands — GM GENUINE, DELPHI, STANDARD MOTOR PRODUCTS and 1 other brand. The "Popular" part is GM GENUINE 12710620.

In the Premium grade, DELPHI supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is DELPHI GN11125.

Standard Replacement: 4 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS and WALKER PRODUCTS. A representative part number is GM GENUINE 12710620.

This group includes GM GENUINE 12710620, DELPHI GN11125 and GM GENUINE 12725605 and the remaining parts above.

This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine. Read more

2 Spark Plug parts are listed for the 2021 Cadillac CT4, from ACDELCO and NGK.

Part numbers include ACDELCO 41106IP and NGK 94956.

This table covers the silicone and rubber boots that insulate the coil-to-plug spark path. Typical signs include a misfire in the rain, carbon tracking on the boot, or a snap when you pop the coil off. Replace boots as a set on a high-mileage engine; one cracked boot will take the coil with it. Read more

This group shows a single part: GM GENUINE 12711622.