2023 Chevrolet Trailblazer Engine Parts

This table covers the Balance shafts. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 12664239.

This table covers the chains that drive the balance shafts. Read more

This group shows a single part: GM GENUINE 12684151.

This table covers the guides that keep the balance-shaft chain on its path. Read more

This group shows a single part: GM GENUINE 12700133.

This table covers the Balance Shaft sprockets. Read more

2 Balance Shaft Sprocket parts for the 2023 Chevrolet Trailblazer come from GM GENUINE.

Part numbers include GM GENUINE 12693243 and GM GENUINE 12693244.

This table covers the camshafts that open the valves. Read more

4 Camshaft parts for the 2023 Chevrolet Trailblazer come from GM GENUINE.

Part numbers include GM GENUINE 25205337, GM GENUINE 25205338 and GM GENUINE 25206537, among others listed above.

This table covers the seals at each camshaft end. 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 2023 Chevrolet Trailblazer — GM GENUINE 12574477.

This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

This group shows a single part: GM GENUINE 12698279.

This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

This group shows a single part: AJUSA 54328800.

This table covers the crankshafts that turn piston motion into rotation. Read more

This group shows a single part: GM GENUINE 12701729.

This table covers the main bearings that support the crankshaft in the block. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

GM GENUINE supplies the 11 Crankshaft Main Bearing parts for the 2023 Chevrolet Trailblazer.

This table covers the Crankshaft Main Bearing Cap bolts. Read more

This group shows a single part: GM GENUINE 55487412.

This table covers the front and rear seals that keep oil in at the crankshaft. 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

4 Crankshaft Seal parts are listed for the 2023 Chevrolet Trailblazer, from AJUSA, ELRING and GM GENUINE. 1 part fits every engine; the other 3 are engine-specific.

Part numbers include AJUSA 71016300, AJUSA 71016400 and ELRING 716640, among others listed above.

This table covers the Crankshaft Seal covers. Read more

This group shows a single part: GM GENUINE 55514589.

This table covers the cylinder heads that close the top of the block. Read more

GM GENUINE supplies both parts for the 2023 Chevrolet Trailblazer.

Listed part numbers: GM GENUINE 25204903 and GM GENUINE 12694943.

This table covers the bolts that clamp the cylinder head to the block. Read more

4 Cylinder Head Bolt parts for the 2023 Chevrolet Trailblazer come from 2 brands — GM GENUINE and AJUSA.

Listed part numbers: AJUSA 81085600, GM GENUINE 11547739 and GM GENUINE 11548171, plus the other parts above.

This table covers the head gaskets that seal the block to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

5 Cylinder Head Gasket parts for the 2023 Chevrolet Trailblazer come from 4 brands — FEL-PRO, ACDELCO, AJUSA and 1 other brand.

Listed part numbers: ACDELCO 12696638, AJUSA 10271500 and FEL-PRO 26927PT, plus the other parts above.

This table covers multi-piece gasket sets for a cylinder-head job. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

2 Cylinder Head Gasket Set parts for the 2023 Chevrolet Trailblazer come from 2 brands — AJUSA and GM GENUINE.

Listed part numbers: AJUSA 52638000 and GM GENUINE 25207408.

This table covers the Cylinder Head plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

GM GENUINE supplies both parts for the 2023 Chevrolet Trailblazer.

This group includes GM GENUINE 09427693 and GM GENUINE 11602951.

This table covers the Engine Block drain plugs. Read more

This group shows a single part: GM GENUINE 11602951.

This table covers the block heaters that warm the coolant or oil in cold weather. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 12586687.

This table covers the Engine covers. Read more

5 Engine Cover parts for the 2023 Chevrolet Trailblazer come from 2 brands — TECHPRO and VARIOUS MFR. 3 parts fit every engine; the other 2 are engine-specific.

Part numbers include TECHPRO GM1228198, TECHPRO GM1228199 and TECHPRO GM1228187, among others listed above.

This table covers the Engine Cover grommets. Read more

GM GENUINE supplies the 3 Engine Cover Grommet parts for the 2023 Chevrolet Trailblazer.

Part numbers include GM GENUINE 12693848, GM GENUINE 12693849 and GM GENUINE 12693850.

This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

This group shows a single part: AJUSA 50567100.

This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

2 Exhaust Valve parts are listed for the 2023 Chevrolet Trailblazer, from GM GENUINE and QUALCAST.

This group includes GM GENUINE 25207383 and QUALCAST 1030853.

This table covers the followers that drive a mechanical fuel pump off the camshaft. Read more

This group shows a single part: GM GENUINE 12718357.

This table covers the Harmonic Balancer bolts. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 25194208.

This table covers the Intake manifolds. Typical signs include an exhaust tick, a vacuum leak, or a gasket that has burned through. Replace the gaskets and hardware; a warped flange will leak with a new gasket alone. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 25204837.

This table covers the Intake Manifold bolts. Read more

This group shows a single part: GM GENUINE 11548171.

This table covers the Intake Manifold covers. Read more

2 Intake Manifold Cover parts for the 2023 Chevrolet Trailblazer come from GM GENUINE.

This group includes GM GENUINE 55512306 and GM GENUINE 25205261.

This table covers the gaskets between the intake manifold and the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

3 Intake Manifold Gasket parts for the 2023 Chevrolet Trailblazer come from 3 brands — ACDELCO, AJUSA and GM GENUINE.

Part numbers include ACDELCO 55486276, AJUSA 13341400 and GM GENUINE 12667033.

This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

One part is listed for the 2023 Chevrolet Trailblazer — QUALCAST 1030854.

This table covers the mounts that hold the engine to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

5 Motor Mount parts are listed for the 2023 Chevrolet Trailblazer, from ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand. ANCHOR 3609 carries the "Popular" badge. All of them fit every engine offered in the 2023 Trailblazer.

This group includes ANCHOR 3609, ANCHOR 3599 and DEA / MARMON RIDE CONTROL A20126 and the remaining parts above.

This table covers the Motor Mount bolts. Read more

This group shows a single part: GM GENUINE 11547918.

This table covers the Motor Mount Bracket bolts. Read more

This group shows a single part: GM GENUINE 11546406.

This table covers the Motor Mount kits. Read more

One part is listed for the 2023 Chevrolet Trailblazer — ANCHOR 300961.

This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable. Read more

37 Oil parts are listed for the 2023 Chevrolet Trailblazer, from MOBIL, LIQUI MOLY, VALVOLINE and 3 other brands. ACDELCO 109324 carries the "Popular" badge. Grades run from Full Synthetic through High Mileage (>75,000 Miles); Full Synthetic is the most populated section, led by LIQUI MOLY, MOBIL, VALVOLINE and 3 other brands.

This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant. Read more

2 Oil Cooler parts are listed for the 2023 Chevrolet Trailblazer, from ACDELCO and GM GENUINE.

Part numbers include ACDELCO 55505451 and GM GENUINE 12704459.

This table covers the gaskets that seal the Oil Cooler. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

4 Oil Cooler Gasket parts for the 2023 Chevrolet Trailblazer come from 3 brands — GM GENUINE, DORMAN and ELRING.

Listed part numbers: DORMAN 66219, ELRING 113020 and GM GENUINE 55505453, plus the other parts above.

This table covers the Oil Cooler Hose pipes. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 12694297.

This table covers the Oil Cooler lines. Typical signs include a wet fitting, a rusted pipe, or a pressure loss in this circuit. Flare or thread the new line the way the notes specify; a kinked replacement will fail early. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 12706072.

This table covers the seals at the Oil Cooler. 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

4 Oil Cooler Seal parts for the 2023 Chevrolet Trailblazer come from 2 brands — GM GENUINE and ELRING. 2 parts fit every engine; the other 2 are engine-specific.

Part numbers include ELRING B17840, GM GENUINE 12698625 and GM GENUINE 12733672, among others listed above.

This table covers the Oil Dipstick tubes. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 12701528.

This table covers the seals at the Oil Dipstick / 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

4 Oil Dipstick / Tube Seal parts for the 2023 Chevrolet Trailblazer come from 3 brands — GM GENUINE, ELRING and FEL-PRO. 3 parts fit every engine; the other 1 is engine-specific.

Part numbers include ELRING 584210, FEL-PRO 73889 and GM GENUINE 24504031, among others listed above.

This table covers the drain plugs in the oil pan. Read more

7 Oil Drain Plug parts are listed for the 2023 Chevrolet Trailblazer, from DORMAN, GM GENUINE and ELRING.

This group includes DORMAN 090948CD, DORMAN 090948 and DORMAN 090854CD and the remaining parts above.

This table covers the crush washers and gaskets under the oil drain plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

7 Oil Drain Plug Gasket parts for the 2023 Chevrolet Trailblazer come from 5 brands — DORMAN, GM GENUINE, AJUSA and 2 other brands. The "Popular" part is DORMAN 097119. 1 part fits every engine; the other 6 are engine-specific.

This group includes DORMAN 097119, GM GENUINE 12616850 and AJUSA 01288800 and the remaining parts above.

This table covers the caps on the oil filler neck. Read more

4 Oil Filler Cap parts are listed for the 2023 Chevrolet Trailblazer, from ACDELCO, CALORSTAT and MOTORAD. 2 parts fit every engine; the other 2 are engine-specific.

Part numbers include ACDELCO FC268, ACDELCO FC275 and CALORSTAT OC2314, among others listed above.

This table covers the gaskets that seal the Oil Filler Cap. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

3 Oil Filler Cap Gasket parts for the 2023 Chevrolet Trailblazer come from 2 brands — ELRING and GM GENUINE. 1 part fits every engine; the other 2 are engine-specific.

Part numbers include ELRING 592250, ELRING 823620 and GM GENUINE 24100002.

This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive. Read more

24 Oil Filter parts are listed for the 2023 Chevrolet Trailblazer, from WIX, ACDELCO, FVP and 7 other brands. WIX WL10290XP carries the "Popular" badge.

In the Economy grade, FVP, PRO-TEC, VARIOUS MFR and 2 other brands supply 8 parts: the catalog's value-priced group. A representative part number is CHAMP / LUBER-FINER PH10064.

In the High Performance / Heavy Duty grade, WIX and MOBIL supply 4 parts: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is WIX WL10290XP.

The Standard Replacement section lists 12 options from ACDELCO, MAHLE / CLEVITE, WIX and 2 other brands — built to original-equipment specification. ACDELCO PF64 is listed in this group.

This table covers the Oil Galley plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 11569584.

This table covers the oil pans that hold the engine's oil sump. Read more

2 Oil Pan parts for the 2023 Chevrolet Trailblazer come from GM GENUINE.

Listed part numbers: GM GENUINE 25204203 and GM GENUINE 12718806.

This table covers the gaskets between the oil pan and the block. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

GM GENUINE supplies the 3 Oil Pan Gasket parts for the 2023 Chevrolet Trailblazer. 1 part fits every engine; the other 2 are engine-specific.

This group includes GM GENUINE 55504437, GM GENUINE 55504438 and GM GENUINE 12663435.

This table covers the Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 55503981.

This table covers the Oil Pump bolts. Read more

This group shows a single part: GM GENUINE 11548167.

This table covers the Oil Pump Control Valve solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

3 Oil Pump Control Valve / Solenoid parts for the 2023 Chevrolet Trailblazer come from 3 brands — ACDELCO, GM GENUINE and STANDARD MOTOR PRODUCTS. 1 part fits every engine; the other 2 are engine-specific.

Listed part numbers: ACDELCO 55595870, GM GENUINE 12740050 and STANDARD MOTOR PRODUCTS OPS409.

This table covers the seals at the Oil Pump Control Valve / Solenoid. 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 2023 Chevrolet Trailblazer — GM GENUINE 55502517.

This table covers the Oil Pump sprockets. Read more

This group shows a single part: GM GENUINE 12693242.

This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo. Read more

2 Piston parts for the 2023 Chevrolet Trailblazer come from GM GENUINE.

This group includes GM GENUINE 12710889 and GM GENUINE 12663172.

This table covers the Piston Pin retainers. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 12639680.

This table covers the rings that seal each piston to the cylinder wall. Read more

2 Piston Ring parts for the 2023 Chevrolet Trailblazer come from GM GENUINE.

Listed part numbers: GM GENUINE 55507069 and GM GENUINE 12698277.

This table covers the rocker arms that transfer cam motion to the valves. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 55569172.

This table covers the Timing belts. Typical signs include squeal on cold start, cracked ribs, or glazing. Spin the tensioner and idlers by hand while the belt is off. Read more

This group shows a single part: GM GENUINE 55489417.

This table covers the Timing Belt pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 25204526.

This table covers the Timing Belt tensioners. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 25205813.

This table covers the Timing Cam sprockets. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 25208644.

This table covers the timing chains that keep the cams in time with the crank. Read more

This group shows a single part: GM GENUINE 12704385.

This table covers the guides and dampers that keep the timing chain on its path. Read more

2 Timing Chain Guide / Damper parts for the 2023 Chevrolet Trailblazer come from GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: GM GENUINE 11561619 and GM GENUINE 12701146.

This table covers the tensioners that keep the timing chain taut. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 12688897.

This table covers the Timing covers. Read more

This group shows a single part: GM GENUINE 55487381.

This table covers the Timing Cover bolts. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GM GENUINE 11548002.

This table covers the crankshaft sprockets that drive the timing chain or belt. Read more

GM GENUINE supplies both parts for the 2023 Chevrolet Trailblazer.

Listed part numbers: GM GENUINE 55512181 and GM GENUINE 12693245.

This table covers the Timing idlers. Typical signs include a chirp that follows engine speed, or an idler that feels rough or has play. Replace a noisy idler with the belt — the labor is already paid for. Read more

One part is listed for the 2023 Chevrolet Trailblazer — GATES T42310.

This table covers the brackets that mount the Torque Strut. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2023 Chevrolet Trailblazer — DEA / MARMON RIDE CONTROL A20118.

This table covers the Torque Strut mounts. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

4 Torque Strut Mount parts for the 2023 Chevrolet Trailblazer come from 4 brands — ANCHOR, DEA / MARMON RIDE CONTROL, GM GENUINE and 1 other brand. 3 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: ANCHOR 3552, DEA / MARMON RIDE CONTROL A20085 and GM GENUINE 60009130, plus the other parts above.

This table covers the turbochargers that compress intake air. Read more

3 Turbocharger parts are listed for the 2023 Chevrolet Trailblazer, from GM GENUINE and GPD.

This group includes GM GENUINE 19434771, GM GENUINE 25207918 and GPD 2511999.

This table covers the Turbocharger Boost 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 Turbocharger Boost Sensor parts for the 2023 Chevrolet Trailblazer come from 2 brands — WELLS and GM GENUINE. Every part fits both the 1.2L L3 Turbocharged and the 1.3L L3 Turbocharged.

The Economy section: 1 option from WELLS. WELLS 5S13833 is listed in this group.

Standard Replacement: 1 part, from GM GENUINE. A representative part number is GM GENUINE 12694431.

This group includes WELLS 5S13833 and GM GENUINE 12694431.

This table covers the Turbocharger Boost solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

One part is listed for the 2023 Chevrolet Trailblazer — VNE 4020011.

This table covers the Turbocharger Coolant lines. Typical signs include a wet fitting, a rusted pipe, or a pressure loss in this circuit. Flare or thread the new line the way the notes specify; a kinked replacement will fail early. Read more

GM GENUINE supplies the 4 Turbocharger Coolant Line parts for the 2023 Chevrolet Trailblazer.

This group includes GM GENUINE 25204920, GM GENUINE 55509610 and GM GENUINE 12703243 and the remaining parts above.

This table covers the Turbocharger Diverter / Bypass valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

One part is listed for the 2023 Chevrolet Trailblazer — STANDARD MOTOR PRODUCTS TBV1027.

This table covers the gaskets that seal the Turbocharger. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

4 Turbocharger Gasket parts for the 2023 Chevrolet Trailblazer come from 3 brands — GM GENUINE, AJUSA and GPD. 1 part fits every engine; the other 3 are engine-specific.

Listed part numbers: AJUSA JTC12758, GM GENUINE 55494843 and GM GENUINE 12667359, plus the other parts above.

This table covers the Turbocharger 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

This group shows a single part: GM GENUINE 25207191.

This table covers the fasteners that mount the turbocharger. Read more

This group shows a single part: GM GENUINE 11549028.