4L65E Solenoid Kit, new and ready to install. Fits the 4L65E. Ships fast from the USA.
This listing is the two on/off shift solenoids for the 4L65E, the heavy-duty four-speed GM put behind the 5.3L and 6.0L V8 in Silverado, Sierra, Tahoe, Yukon, Suburban and Avalanche. It is listed new, GM brand, reference number 24230298, with a 1-year warranty, and the photo shows two boxed GM Genuine Parts solenoids. If your truck pulls away in second, will not take fourth, starts in fourth, or set a shift solenoid code after a hot day of towing, these are the two parts most likely to be called out first, and at $77.99 for the pair they are the cheapest repair on the valve body.
The 4L65E uses the same electronics as every 4L60E-family unit. The PCM picks a gear by switching two identical solenoids to ground in combination: both on for first, A off and B on for second, both off for third, A on and B off for fourth. That means solenoid A changes state on the 1-2 and 3-4 shifts and solenoid B changes state on the 2-3. Neither one sees raw line pressure. They are fed by the actuator feed limit (AFL) valve, which Sonnax says regulates line pressure down to a steady solenoid feed, typically in the 80-115 psi range. A solenoid that sticks open, leaks past its seat or loses its coil leaves the shift valve it controls in the wrong position, and the truck runs in whatever gear that position gives.
If the truck is stuck in third with no upshift or downshift, do not buy solenoids yet. Third is what you get with both solenoids off, and Transmission Digest points out that two solenoids rarely fail on the same day, so a fuse, the shared power feed at case connector pin E, a connector or the ignition switch is the better bet. For a single-solenoid pattern, GEARS Magazine lists 20 to 30 ohms as normal and an expected draw of roughly 0.42 to 0.63 amps at 12.6 volts, and the current reading is the more telling of the two. Also put a pressure gauge on it: a second-gear start can come from pressure below the 48 psi needed to stroke the 1-2 valve, with both solenoids healthy. Our 4L65E shift solenoid symptoms guide walks through the full state table and pin tests, and the Silverado 1500 shift problems guide covers the truck-specific causes.
The 24230298 solenoid did not change across the 4L60E, 4L65E and 4L70E run, so this pair fits any 4L65E from its 2001 start, which covers 2001-2007 Silverado, Sierra, Tahoe, Yukon, Suburban and Avalanche with the 5.3L or 6.0L. To confirm your truck has the 4L65E rather than a 4L60E, look for RPO code M32 on the glovebox or spare tire well sticker; the 4L60E is M30. Compare the connector and body of the solenoids you pull out with the photo, or send us your year and VIN and we will check it. Everything else for this transmission is on the 4L65E collection page.
Both solenoids are reached with the pan off and the transmission in the truck. Drain the fluid, drop the pan and read the magnet first: clutch material or bronze means the problem is bigger than solenoids. Pull the filter and make sure its seal comes out of the pump bore with it. Mark which solenoid is A and which is B before unplugging, because they are physically the same and swapped positions give odd shift patterns with no code. Keep pressure on each solenoid as its retainer comes off, slide it straight out, lube the new O-rings with ATF and push the new one in square. Torque small valve body bolts with an inch-pound wrench, never an impact. Inspect the harness while you are in there; if the insulation is cracked or the case connector leaks, the 4L65E internal wiring harness replaces it. If the truck also flares or overheats in lockup, the 2003-2007 TCC solenoid sits on the same valve body. Refill with Dexron VI, clear codes and drive through every gear.
| Fits | 4L65E |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | GM |
| Reference | 24230298 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 24230298 solenoid is shared across the 4L60E, 4L65E and 4L70E, so yes. Check the connector and body against the parts you remove, or send us your year and VIN.
Not strictly, but they share the same fluid, heat and mileage, and the pan only has to come off once. Most techs replace A and B together.
Only if both solenoids failed, which is rare. Stuck in third with no shifts usually means lost power to both: check the transmission fuse, pin E at the case connector and the ignition switch first.
GEARS Magazine lists 20 to 30 ohms, with about 0.42 to 0.63 amps of draw at 12.6 volts. A coil can ohm fine and still fail under current, so a current test is better.
Dexron VI ATF. Replace the filter and pan gasket when you have the pan off for the solenoids.
