4L60E Solenoid Kit 2003-2006, new and ready to install. Fits the 4L60E. Ships fast from the USA.
This GM-branded solenoid kit covers 4L60E transmissions from 2003 through 2006, the stretch when GM was finishing the last big round of electrical updates to this gearbox. If your Silverado, Sierra, Tahoe, Yukon, Suburban, Envoy or TrailBlazer era GM is stuck in a failsafe gear, slips the converter, or has a mix of shift, pressure and 3-2 codes, this kit replaces the complete solenoid set in one job and carries a 1-year warranty.
The product photo shows a full electrical set for the valve body: shift solenoids A and B, the round pressure control solenoid, two more solenoids for TCC PWM and 3-2 control, the internal wiring harness with the on/off TCC solenoid on it, and the pressure switch manifold. In a 4L60E, A and B are switched on and off in four combinations to select 1st through 4th. The pressure control solenoid regulates line pressure, the two TCC solenoids apply and modulate the converter clutch, and the 3-2 solenoid controls how the transmission drops from 3rd to 2nd. The pressure switch manifold tells the computer which range the manual valve is in.
Pull the codes and freeze frame, then meter the circuits at the case connector before ordering parts. ATRA has documented that limp mode with several solenoid codes on these units is very often a wiring or connection fault, so rule out the external harness and connector pins too. Our 3-2 downshift solenoid and P0785 guide explains that circuit, and the TCC solenoid and P0740 guide covers lockup faults. A bidirectional scanner such as the XTOOL IP500 GM scan tool lets you command each solenoid and run the relearn afterward.
Listed for 2003-2006 4L60E applications. The important detail in this range is the 2005-2006 transition: GM added an input speed sensor, modified the pump casting during 2005 to accept a new harness, and changed the internal harness and pass-through connector for 2006. Because of that, a 2003-2004 unit and a 2006 unit do not always share the same harness. Look at the harness in the photo, check your pass-through connector and whether your case has an input speed sensor, and if anything does not match, send your year and VIN and we will confirm before the kit ships. Other year-specific kits and valve bodies are on our GM 4L60E parts collection.
| Fits | 4L60E 2003-2006 |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | GM |
| 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 2003-2006, but GM changed the internal harness and pass-through connector for 2006 and added an input speed sensor. Compare the harness and connectors in the photo with yours, or send each VIN so we can confirm.
The product photo shows an internal harness with the TCC solenoid along with the shift, pressure control, TCC PWM and 3-2 solenoids and a pressure switch manifold.
It can be, but multiple solenoid codes at once often come from a wiring or connector fault. Meter the circuits at the case connector and check the external harness first.
The solenoids, harness and pressure switch manifold can usually be replaced with only the pan and filter removed. Drop the valve body only if you are also inspecting the spacer plate or bores.
Fill with Dexron VI, set the level hot, clear codes and run the transmission adapt relearn with a scan tool, then road test.
