4L60E Solenoid Kit 2003-2005, new and ready to install. Fits the 4L60E. Ships fast from the USA.
On a 2003, 2004 or 2005 Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban or Avalanche, the usual 4L60E solenoid complaints are a hard bang into gear, slipping or flared shifts, a truck that sits in 2nd or 3rd after the check engine light comes on, and codes such as P0748 or P0753. This new kit is sold specifically for 2003-2005 units and, per the product photo, packages the boxed solenoids with an internal harness and the pressure switch manifold. It is covered by a 1-year warranty.
By 2003 the 4L60E had settled into a stable electrical layout: two on/off shift solenoids, a pressure control solenoid, an on/off TCC solenoid plus a PWM TCC solenoid, and an on/off 3-2 control solenoid, all fed regulated oil by the actuator feed limit valve. The pressure control solenoid is the one that gets the most attention in these years. It varies line pressure by current, so as it wears the computer loses fine control of shift feel, and the result is harsh upshifts at light throttle or soft, slipping shifts under load. Shift solenoids A and B decide the gear, so a sticking one shows up as missing gears or a failsafe start in 2nd.
Read all stored codes, then check the circuits at the case connector with a meter. A healthy shift solenoid reads roughly 20-40 ohms and the pressure control solenoid about 3.5-8 ohms. Watch commanded versus actual pressure control current with a scan tool if yours can show it. The P0748 pressure control solenoid guide covers the most common failure in this year range, and our 4L60E shift solenoid symptoms and testing guide covers the rest. Clean readings with ongoing shift complaints point to worn valve body bores instead, which a solenoid kit does not fix.
This kit is listed for 2003-2005 4L60E transmissions in GM full-size trucks and SUVs and other applications of those years. Pay attention if you have a late 2005 truck. GM began adding the input speed sensor around 2005 and changed the pump casting partway through that year to take a new harness, with the revised internal harness and pass-through connector fully in place for 2006. A late-build 2005 may therefore look more like a 2006 inside the pan. Match your harness and connectors to the photo, or send us your year and VIN and we will confirm before shipping. The full lineup of year-specific parts is on our 4L60E transmission parts page.
If lockup is the only complaint, the standalone 2003-2005 4L60E TCC solenoid may be all you need.
| Fits | 4L60E 2003-2005 |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for 2003-2005 4L60E applications, which includes the 2004 Silverado 1500 with that transmission. Compare the connectors to the photo or send us your VIN if you want it confirmed.
Possibly not. GM changed the pump casting and internal harness during 2005 and finished the change in 2006. Look at your harness and pass-through connector, or send your VIN, before ordering.
A single P0748 points at the pressure control solenoid, but on a high-mileage truck the other solenoids and harness are the same age. Replacing them together saves dropping the pan twice.
Yes. Clear the codes and run the transmission adapt reset and relearn so shift pressure starts from a clean baseline instead of the corrections the computer learned for the worn parts.
Dexron VI ATF. Check the level hot with the engine running.
