2018 GMC Acadia 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

8 Camshaft Position Sensor parts for the 2018 GMC Acadia come from 8 brands — HOLSTEIN, UNITED MOTOR PRODUCTS, GM GENUINE and 5 other brands. The "Popular" part is GM GENUINE 12646782.

The Economy section lists 2 options from HOLSTEIN and UNITED MOTOR PRODUCTS — the catalog's value-priced group. HOLSTEIN 2CAM0581 is listed in this group.

In the Standard Replacement grade, GM GENUINE, STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI and 2 other brands supply 5 parts: built to original-equipment specification. A representative part number is GM GENUINE 12646782.

1 further part sits outside the graded sections, with the same engine-level match.

This group includes GM GENUINE 12646782, HOLSTEIN 2CAM0581 and UNITED MOTOR PRODUCTS CAM388 and the remaining parts 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

2 Camshaft Position Sensor Seal parts are listed for the 2018 GMC Acadia, from ELRING and GM GENUINE.

Listed part numbers: ELRING 048700 and 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

8 Crankshaft Position Sensor parts for the 2018 GMC Acadia come from 8 brands — HOLSTEIN, SPECTRA PREMIUM, GM GENUINE and 5 other brands. The "Popular" part is GM GENUINE 12646781.

The Economy section: 2 options from HOLSTEIN and SPECTRA PREMIUM. HOLSTEIN 2CRK0730 is listed in this group.

Standard Replacement: 6 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI and 3 other brands. A representative part number is GM GENUINE 12646781.

This group includes GM GENUINE 12646781, HOLSTEIN 2CRK0730 and SPECTRA PREMIUM S10568 and the remaining parts 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

14 Ignition Coil parts for the 2018 GMC Acadia come from 13 brands — GM GENUINE, B&B, HOLSTEIN and 10 other brands. The "Popular" part is DELPHI GN10889.

The Economy section: 5 options from B&B, HOLSTEIN, SKP and 2 other brands. B&B BB2830 is listed in this group.

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 GN10889.

Standard Replacement: 8 parts, from GM GENUINE, DENSO, NGK and 4 other brands. A representative part number is GM GENUINE 12741091.

This table covers the lock cylinders in the ignition switch. Read more

2 Ignition Lock Cylinder parts for the 2018 GMC Acadia come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.

This group includes STANDARD MOTOR PRODUCTS US669L and WELLS 4H1813.

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

5 Spark Plug parts are listed for the 2018 GMC Acadia, from DENSO, NGK and ACDELCO. ACDELCO 41130 carries the "Popular" badge.

Listed part numbers: ACDELCO 41130, DENSO 5339 and DENSO 4719, plus the other parts above.

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

2 Spark Plug / Ignition Coil Boot parts for the 2018 GMC Acadia come from STANDARD MOTOR PRODUCTS.

The Economy section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS 34181 is listed in this group.

Standard Replacement: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS SPP227E.

Listed part numbers: STANDARD MOTOR PRODUCTS 34181 and STANDARD MOTOR PRODUCTS SPP227E.

This table covers the seals at the Spark Plug Tube. 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

3 Spark Plug Tube Seal parts for the 2018 GMC Acadia come from 3 brands — ELRING, GM GENUINE and MAHLE / CLEVITE.

Part numbers include ELRING 912510, GM GENUINE 12613249 and MAHLE / CLEVITE GS34091.