Genuine GM shift solenoid (PN 24230298) for 4L60E/4L65E automatics; the A and B on-off solenoids that time the 1-2 and 3-4 shifts. Fixes P0753/P0758.
This is a single genuine GM 24230298 shift solenoid for the 4L60E, 4L65E and 4L70E, the transmission behind Silverado, Sierra, Tahoe, Yukon, Suburban, Trailblazer, Avalanche and a long list of other rear- and four-wheel-drive GM trucks and SUVs. People usually find it after a scan shows P0753 or P0758, or after the truck starts pulling away sluggishly, refuses overdrive, or holds third no matter how fast it is going. It is the GM Genuine Parts and ACDelco version built to OE fit and calibration, sold one per listing at $23.99, which matters if you only need to replace the one position that failed or want a factory unit for each spot.
The 4L60E uses the same 24230298 solenoid in both the A and B positions, and the PCM selects gears by switching the pair in combination. In ATRA's Type 1 pattern for this transmission, first is A on and B on, second is A off and B on, third is both off, and fourth is A on and B off. Look at when each one changes state: solenoid A switches on the 1-2 shift and again on the 3-4 shift, while solenoid B switches on the 2-3. So the part sitting in the A position is the one timing both your 1-2 and 3-4 shifts, which is where the title on this listing comes from. Physically the A and B units are identical, which is why one part number serves both bores.
Take a resistance reading at the transmission case connector before you drop the pan. ATRA's chart lists solenoid A between pins E and A and solenoid B between pins E and B, with 20 to 40 ohms as normal for each. Pin E is the shared power feed, so if both solenoids look good at the case but the PCM still sets codes, follow that circuit back to the fuse and ignition switch the way ATRA bulletin 1244 describes. A road test where you note exactly which gears you get will also tell you which position failed. Our shift solenoids A and B guide lays out the gear pattern for each failure, and the TCC solenoid and P0740 guide is worth reading if a converter code shows up alongside the shift code.
Fits the GM 4L60E, 4L65E and 4L70E automatics. That covers the 1993-2013 run of Chevrolet Silverado 1500, Tahoe, Suburban, S10, Blazer, Camaro and Corvette and GMC Sierra 1500, Yukon and Sonoma, among others. The listing describes a single blade terminal on the connector. Compare that and the solenoid body to the one you pull out, or send us your year and VIN to confirm. Browse everything for this transmission on the 4L60E collection page.
One solenoid ships per order and the transmission uses two, so order two if you are doing both positions, which is the usual practice since they share the same fluid and mileage. If you would rather buy both at once, the shift solenoid A and B kit packs the pair together. To replace it, drain the fluid and remove the pan and filter. Keep thumb pressure on the solenoid while you slide its clip off, because one of them sits over a spring-loaded plunger, and pull it straight out slowly so the internal valve stays put. Lube the new O-ring with ATF, push the solenoid in square, refit the clip and plug in the lead. Install a fresh filter and pan gasket, refill with Dexron VI, clear codes and drive through every gear. If the truck also has a slipping lockup, the 1993-2002 4L60E TCC solenoid is on the same valve body.
| Part number | 24230298 (GM Genuine / ACDelco) |
| Type | On-off shift solenoid (A and B, 1-2 & 3-4) |
| Fits | GM 4L60E, 4L65E, 4L70E automatics |
| Connector | Single blade terminal |
| Material | Metal, polished finish, GM OE spec |
| Quantity | 1 solenoid (transmission uses 2 - order two for the pair) |
| Common codes | P0753, P0758, no upshift / limp mode |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 4L60E uses two of these, one in the A position and one in the B position. This listing is for one, so order two if you are replacing both, which most techs do while the pan is off.
No. The same 24230298 part fits both positions. What changes is how the PCM switches each one: A changes state on the 1-2 and 3-4 shifts, B on the 2-3.
ATRA lists 20 to 40 ohms for each shift solenoid, measured at the case connector between pins E and A for solenoid A and pins E and B for solenoid B.
If a failed solenoid is the cause, yes. Third is the default gear with both solenoids off, so also check the shared power feed, fuse and ignition switch, since losing power to both produces the same symptom.
Refill with Dexron VI ATF and replace the filter and pan gasket at the same time.
