Refurbished five-piece EPC, TCC and shift solenoid pack for the 4L60E in 1996-2002 Silverado, Sierra, Tahoe, Yukon, Suburban and Astro.
If your 1996-2002 Silverado, Sierra, Tahoe, Yukon, Suburban, Astro or Safari is throwing shift solenoid codes, banging into gear, hanging in one gear or refusing to lock the converter on the highway, this refurbished five-piece pack covers the electrical parts most likely to be behind it. It replaces the shift solenoids, the EPC pressure control solenoid and the TCC solenoid that bolt to the 4L60E valve body, and it is also listed for the 4L65E and 4L70E. The listing gives five OE cross references to match against your old parts: 24227792, 24227747, 24212690, 24214974 and 868318. At $92.99 it is a practical option for a work truck or a high-mileage SUV where a full rebuild is not on the table yet.
The 4L60E has no throttle cable or governor. The PCM decides every shift and carries it out through solenoids. Two on/off shift solenoids, A (1-2) and B (2-3), produce all four gears by combination: both on for first, A off and B on for second, both off for third, and A on with B off for fourth. Because both are off in third, a truck that loses power to the solenoid circuit defaults to third gear. The EPC solenoid is a variable-force unit that sets line pressure, so it decides how firm or soft every shift feels. The TCC solenoid applies the converter clutch at cruise. All of them are fed regulated oil from the AFL valve, so one weak coil or worn seat changes what the hydraulics actually deliver, even when the PCM commands the right thing.
Read the codes first, then check the circuits at the transmission case connector before dropping the pan. The ATRA resistance chart for this unit lists the 1-2 and 2-3 shift solenoids at 20 to 40 ohms and the pressure control solenoid at 3.5 to 8.0 ohms; a reading that is open or shorted confirms a bad part or a bad wire. A solenoid that passes resistance can still be slow to respond, so compare commanded gear against actual gear ratio on a scan tool. Our 4L60E shift solenoid symptoms and testing guide walks through the pin map and tests, and the P0748 pressure control solenoid guide covers the EPC side.
The listing covers 1996-2002 Chevrolet Silverado and GMC Sierra 1500-3500 with the 4.3L, 4.8L, 5.3L, 5.7L or 6.0L, Tahoe and Yukon, Suburban 1500-2500, Astro and Safari 4.3L, 1999-2002 Cadillac Escalade, Pontiac Firebird, Oldsmobile Bravada, the 1996 Buick Roadmaster and the 1997-2000 Isuzu Hombre. GM changed solenoid and harness styles over the life of the 4L60E, so compare the connectors and the OE numbers above against what is in your pan, or send us your year and VIN and we will check it. If your truck is a 2003 or later, look at the 2003-2007 solenoid kit instead. Browse every part for this transmission on our 4L60E collection page.
Drain and drop the pan, remove the filter and unplug the internal harness from each solenoid. Inspect the connector pins and the harness itself while you are in there; ATRA has documented poor terminal crimps setting solenoid codes on their own, and a heat-cracked harness should be replaced, not reused. These parts are refurbished and ship coated in rust-preventive oil, and they may show light handling marks from storage, so wipe each one clean before installing. Fit new O-rings lubed with fresh ATF, seat each solenoid fully, then install a new filter and pan gasket. The master solenoid kit with harness, filter and gasket bundles those pieces if you want everything in one box. Refill with Dexron VI, clear codes, and road test through every gear and into lockup. If the same symptom returns with new solenoids, the valve body bores are the next suspect; a remanufactured valve body is the fix for worn bores on later units.
| Transmission | GM 4L60E, 4L65E, 4L70E |
| Listed years | 1996-2002 GM trucks, SUVs and vans |
| Pieces | 5 |
| OE cross reference | 24227792, 24227747, 24212690, 24214974, 868318 |
| Condition | Refurbished |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Refurbished. The solenoids ship coated in rust-preventive oil and may have light handling marks from storage. Wipe them clean before you install them.
The listing cross references 24227792, 24227747, 24212690, 24214974 and 868318. Compare these with the numbers on your old solenoids before you order.
Only if a solenoid is the cause. The 4L60E defaults to third when both shift solenoids lose power, so a blown fuse, damaged harness or bad case connector produces the same symptom. Check power and resistance at the case connector first.
This pack is for the 1996-2002 run. 2003 and later trucks use a different solenoid and harness setup, so look at the 2003-2007 kit or send us your VIN.
Dexron VI ATF. It is the current GM fluid and is approved where older Dexron grades were originally specified.
Clear the codes and road test through every gear and into lockup. On a 1996-2002 truck the PCM adapts shift pressure as you drive, so shift feel can take several drive cycles to settle.
