2021 GMC Acadia 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

6 Alternator / Generator parts are listed for the 2021 GMC Acadia, from GM GENUINE, SKP, WAI GLOBAL and 3 other brands. GM GENUINE 84093307 carries the "Popular" badge.

In the New grade, GM GENUINE, SKP and WAI GLOBAL supply 3 parts: brand-new units rather than rebuilt ones. A representative part number is GM GENUINE 84093307.

In the Remanufactured grade, PURE ENERGY, REMY and TERREPOWER supply 3 parts: factory-rebuilt units with new wear components. A representative part number is PURE ENERGY 10172.

Part numbers include GM GENUINE 84093307, SKP SK84093307 and WAI GLOBAL 11795N, among others listed above.

This table covers the Alternator / Generator bolts. Read more

This group shows a single part: GM GENUINE 11589253.

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

This group shows a single part: GM GENUINE 13520524.

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

10 Battery parts for the 2021 GMC Acadia come from 8 brands — DEKA, ACDELCO, BOSCH and 5 other brands. The "Popular" part is DEKA 9A48.

In the AGM (Extended Life) grade, DEKA, ACDELCO, BOSCH and 4 other brands supply 9 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A48.

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.

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

GM GENUINE supplies the 3 Battery Cable parts for the 2021 GMC Acadia.

This group includes GM GENUINE 84541032, GM GENUINE 84681646 and GM GENUINE 84682293.

This table covers the Battery Cable Terminal ends. Read more

This group shows a single part: GM GENUINE 84710785.

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

One part is listed for the 2021 GMC Acadia — STANDARD MOTOR PRODUCTS BSC123.

This table covers the Battery 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 2021 GMC Acadia — GM GENUINE 84155667.

This table covers the Blind Spot Detection 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

HELLA supplies both parts for the 2021 GMC Acadia.

Part numbers include HELLA 013068241 and HELLA 013068041.

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

GM GENUINE supplies both parts for the 2021 GMC Acadia.

Listed part numbers: GM GENUINE 22940857 and GM GENUINE 13534192.

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

4 Circuit Breaker parts for the 2021 GMC Acadia come from 2 brands — BUSSMANN and GM GENUINE.

The 15 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. BUSSMANN CB21115 is listed in this group.

The 20 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. BUSSMANN CB21220 is listed in this group.

2 further parts sit outside the graded sections, with the same engine-level match.

Part numbers include BUSSMANN CB21115, BUSSMANN CB21220 and GM GENUINE 84098783, among others listed above.