2009 Hummer H3 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

13 Alternator / Generator parts for the 2009 Hummer H3 come from 8 brands — TERREPOWER, FVP, PURE ENERGY and 5 other brands. The "Popular" part is GM GENUINE 20881337.

The New section lists 6 options from GM GENUINE, TYC, WAI GLOBAL and 3 other brands — brand-new units rather than rebuilt ones. GM GENUINE 20881337 is listed in this group.

The Remanufactured section lists 7 options from REMY, TERREPOWER, BOSCH and 2 other brands — factory-rebuilt units with new wear components. BOSCH AL8529X is listed in this group.

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

One part is listed for the 2009 Hummer H3 — FULLRIVER FT82534.

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

This group shows a single part: ACDELCO 19473705.

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 Hummer H3 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 Hummer H3. 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 125 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "125 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MEG125.

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 25 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE MIN25 is listed in this group.

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.

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.

Part numbers include LITTELFUSE MIN20, LITTELFUSE LMIN10 and LITTELFUSE MEG125, among others listed above.

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

GM GENUINE supplies both parts for the 2009 Hummer H3.

This group includes GM GENUINE 84594590 and GM GENUINE 84594588.

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

2 Keyless Entry Remote parts for the 2009 Hummer H3 come from 2 brands — DORMAN and GM GENUINE.

This group includes DORMAN 13740 and GM GENUINE 10335583.

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

This group shows a single part: DORMAN 13643.

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

7 Speed Sensor parts are listed for the 2009 Hummer H3, from STANDARD MOTOR PRODUCTS, GPD, GM GENUINE and 2 other brands. GM GENUINE 19302667 carries the "Popular" badge.

In the Economy grade, GPD and STANDARD MOTOR PRODUCTS supply 2 parts: the catalog's value-priced group. A representative part number is GPD 1815489.

The Standard Replacement section lists 5 options from STANDARD MOTOR PRODUCTS, GM GENUINE, WELLS and 1 other brand — built to original-equipment specification. GM GENUINE 19302667 is listed in this group.

This group includes GM GENUINE 19302667, GPD 1815489 and STANDARD MOTOR PRODUCTS SC168T and the remaining parts above.

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

2 Speed Sensor Seal parts for the 2009 Hummer H3 come from GM GENUINE.

Listed part numbers: GM GENUINE 24234215 and GM GENUINE 19133158.

This table covers the Starter bolts. Read more

2 Starter Bolt parts for the 2009 Hummer H3 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

14 Starter Motor parts for the 2009 Hummer H3 come from 9 brands — ACDELCO, PURE ENERGY, REMY and 6 other brands. The "Popular" part is ACDELCO 3371138.

The New section: 7 options from ACDELCO, PURE ENERGY, REMY and 4 other brands. ACDELCO 3371138 is listed in this group.

The Remanufactured section: 7 options from ACDELCO, DENSO, FVP and 4 other brands. ACDELCO 3362150A 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 Hummer H3 — GM GENUINE 12668713.

This table covers the Wiring Harness clips. Read more

2 Wiring Harness Clip parts for the 2009 Hummer H3 come from GM GENUINE.

This group includes GM GENUINE 15157936 and GM GENUINE 15837267.

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

2 Yaw Sensor parts are listed for the 2009 Hummer H3, from GM GENUINE and WELLS.

This group includes GM GENUINE 25927021 and WELLS 5S12116.