2004 Avanti Ii Automatic Transmission Parts

This table covers the pistons inside a transmission accumulator. Read more

TRANSGO supplies both parts for the 2004 Avanti Ii.

This group includes TRANSGO 4L6FWD and TRANSGO 4L652ACM.

This table covers the Actuator Feed Limit 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

This group shows a single part: TRANSGO 4L60EAFLOS.

This table covers the apply bands inside the automatic transmission. Read more

3 Band parts are listed for the 2004 Avanti Ii, from ATP, BORG-WARNER and PIONEER.

Part numbers include ATP CX42, BORG-WARNER 27363BW and PIONEER 767015.

This table covers the Boost 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

TRANSGO supplies both parts for the 2004 Avanti Ii.

Listed part numbers: TRANSGO 4L60EBOOST and TRANSGO 4L60EBOOST472.

This table covers the bushings in this assembly. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

6 Bushing parts for the 2004 Avanti Ii come from 3 brands — ATP, PIONEER and DURA-BOND. The "Popular" part is DURA-BOND GMT31A.

This group includes DURA-BOND GMT31A, PIONEER 755051 and ATP SB33 and the remaining parts above.

This table covers the Bushing kits. Read more

3 Bushing Kit parts for the 2004 Avanti Ii come from DURA-BOND.

Listed part numbers: DURA-BOND TK23, DURA-BOND TK23EK and DURA-BOND TK23HP.

This table covers the Clutch springs. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats. Read more

This group shows a single part: TRANSGO 7CS.

This table covers the related components grouped with this assembly. Read more

20 Components parts for the 2004 Avanti Ii come from 2 brands — SONNAX and TRANSGO. The "Popular" part is SONNAX 77701076.

This table covers the Conductor plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

One part is listed for the 2004 Avanti Ii — ROSTRA 550034.

This table covers the seals at the Extension Housing. 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

5 Extension Housing Seal parts are listed for the 2004 Avanti Ii, from NATIONAL, WJB / INMOTION PARTS and BCA. NATIONAL 4934 carries the "Popular" badge.

Part numbers include NATIONAL 4934, BCA NS4583 and NATIONAL 4583, among others listed above.

This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for. Read more

7 Filter parts for the 2004 Avanti Ii come from 4 brands — VARIOUS MFR, ATP, PIONEER and 1 other brand. The "Popular" part is VARIOUS MFR PT1211.

The Economy section lists 2 options from VARIOUS MFR — the catalog's value-priced group. VARIOUS MFR PT1211 is listed in this group.

In the Standard Replacement grade, ATP and PIONEER supply 4 parts: built to original-equipment specification. A representative part number is ATP B126.

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

Listed part numbers: VARIOUS MFR PT1211, VARIOUS MFR PT1211X and ATP B126, plus the other parts above.

This table covers the pans that hold automatic-transmission fluid. Read more

One part is listed for the 2004 Avanti Ii — ATP 103017.

This table covers the gaskets that seal the Fluid Pan. 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 Fluid Pan Gasket parts for the 2004 Avanti Ii come from 3 brands — MAHLE / CLEVITE, VICTOR REINZ and FEL-PRO. The "Popular" part is FEL-PRO TOS18663.

Listed part numbers: FEL-PRO TOS18663, MAHLE / CLEVITE W39365 and MAHLE / CLEVITE W39365TC, plus the other parts above.

This table covers the precision wear sleeves used to restore a transmission pump seal surface. Read more

2 Fluid Pump Repair Sleeve parts are listed for the 2004 Avanti Ii, from NATIONAL and WJB / INMOTION PARTS.

This group includes NATIONAL 99174 and WJB / INMOTION PARTS WS99174.

This table covers the seals at the Fluid Pump. 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

5 Fluid Pump Seal parts are listed for the 2004 Avanti Ii, from NATIONAL, ATP, BCA and 2 other brands. NATIONAL 4950 carries the "Popular" badge.

This group includes NATIONAL 4950, ATP CO37 and BCA NS4950 and the remaining parts above.

This table covers the governors and modulators that control transmission shift pressure. Read more

This group shows a single part: TRANSGO 46MOD.

This table covers the seals at the Manual Shaft. 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 Manual Shaft Seal parts are listed for the 2004 Avanti Ii, from NATIONAL and WJB / INMOTION PARTS.

This group includes NATIONAL 8792S and WJB / INMOTION PARTS WS8792S.

This table covers the Pressure Control (EPC) 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

2 Pressure Control (EPC) Solenoid parts for the 2004 Avanti Ii come from 2 brands — PA CARGO and ROSTRA.

This group includes PA CARGO 34605C and ROSTRA 520518.

This table covers the Pressure Switch 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 2004 Avanti Ii — ROSTRA 501002.

This table covers the rebuild kits for this assembly. Read more

7 Rebuild Kit parts are listed for the 2004 Avanti Ii, from ATP, PIONEER, TRANSTEC and 1 other brand. TRANSTEC 80000149 carries the "Popular" badge.

In the Deluxe Kit (Master Kit + Filter, Band & Common Bushings) grade, ATP and PIONEER supply 2 parts: grouped under the catalog's "Deluxe Kit (Master Kit + Filter, Band & Common Bushings)" designation — the notes column spells out what sets them apart. A representative part number is ATP PMS116.

The Master Kit (Overhaul Kit + Friction & Steel Clutch Plates) section lists 2 options from ATP and PIONEER — grouped under the catalog's "Master Kit (Overhaul Kit + Friction & Steel Clutch Plates)" designation — the notes column spells out what sets them apart. ATP MKS1530 is listed in this group.

In the Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings) grade, TRANSTEC supplies 2 parts: grouped under the catalog's "Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings)" designation — the notes column spells out what sets them apart. A representative part number is TRANSTEC 80000149.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Part numbers include TRANSTEC 80000149, ATP PMS116 and PIONEER 753067, among others listed above.

This table covers the Roller clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

One part is listed for the 2004 Avanti Ii — BORG-WARNER 28571AM.

This table covers the pistons in a transmission servo. Read more

This group shows a single part: TRANSGO 72P.

This table covers the Shift Improvement kits. Read more

6 Shift Improvement Kit parts for the 2004 Avanti Ii come from 3 brands — TRANSGO, PIONEER and ATP. The "Popular" part is TRANSGO SK4L60E.

In the Daily Driver grade, TRANSGO and PIONEER supply 2 parts: grouped for everyday commuting duty. A representative part number is TRANSGO SK4L60E.

In the Heavy Duty grade, TRANSGO and ATP supply 2 parts: rated for severe service. A representative part number is TRANSGO 4L60EHD2.

The High Performance section lists 2 options from TRANSGO — engineered beyond original-equipment specification. TRANSGO 4L60EPRO is listed in this group.

This group includes TRANSGO SK4L60E, PIONEER 765015 and TRANSGO 4L60EHD2 and the remaining parts above.

This table covers the seals at the Shift Shaft. 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 Shift Shaft Seal parts are listed for the 2004 Avanti Ii, from ACDELCO and SCHAEFFLER.

Listed part numbers: ACDELCO 8792S and SCHAEFFLER SS2114.

This table covers the Shift 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

6 Shift Solenoid parts are listed for the 2004 Avanti Ii, from PA CARGO, ROSTRA and ATP. ROSTRA 520348 carries the "Popular" badge.

Part numbers include ROSTRA 520348, ROSTRA 520251 and ATP CE15, among others listed above.

This table covers the Sun Gear bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

One part is listed for the 2004 Avanti Ii — PIONEER 755053.

This table covers the Torque converters. Typical signs include a sulfur smell, rattling substrate, or an efficiency code. Confirm CARB vs Federal certification in the notes before ordering. Read more

This group shows a single part: TC REMANUFACTURING B85TMBX.

This table covers the Torque Converter Clutch 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

6 Torque Converter Clutch Solenoid parts for the 2004 Avanti Ii come from 4 brands — ATP, PIONEER, PA CARGO and 1 other brand. The "Popular" part is ATP CE14.

Part numbers include ATP CE14, PA CARGO 77942 and ATP CE1, among others listed above.

This table covers the Torque Converter Clutch 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 2004 Avanti Ii — TRANSGO 4L6ISO3.

This table covers the wear sleeves used to restore a Torque Converter seal surface. Read more

One part is listed for the 2004 Avanti Ii — SCHAEFFLER SR3496.

This table covers the seals at the Torque Converter Shaft. 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 Torque Converter Shaft Seal parts are listed for the 2004 Avanti Ii, from TIMKEN and TRANSTEC.

Part numbers include TIMKEN 4950 and TRANSTEC 81000837.

This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid. Read more

This group shows a single part: ATP AT216.

This table covers the conditioners and additives used with this transmission fluid. Read more

6 Transmission Fluid Additive parts for the 2004 Avanti Ii come from LUBEGARD. The "Popular" part is LUBEGARD 19610.

Part numbers include LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 63010, among others listed above.

This table covers the valve bodies that route hydraulic pressure inside the transmission. Read more

This group shows a single part: PA CARGO GM4643.

This table covers the Valve Body Separator plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

One part is listed for the 2004 Avanti Ii — TRANSGO 46PLT96.