P2723 on 2011-2013 Chevrolet Silverado: Pressure Control Solenoid 'E' Causes and Fixes

What's Unique About the 2011-2013 Chevrolet SILVERADO

The 6L80 transmission used in this generation of Silverado is known for specific vulnerabilities. GM Technical Service Bulletins (TSBs) directly link code P2723 to debris clogging the orifices of the valve body separator plate. [Bulletin #PIP5100, 10] A particularly noted cause for this debris is the failure of aftermarket spin-on transmission filters, which can disintegrate and send material through the transmission's hydraulic circuits. [Bulletin #PIP5100A] This makes checking for debris and the type of filter installed a critical diagnostic step specific to this platform. The solenoids are also not individually replaceable; they are integrated into the Transmission Electro-Hydraulic Control Module (TEHCM), which is the combined valve body, solenoids, and TCM.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Vehicle will not move in forward or reverse. [Bulletin #PIP5100, #PIP5100A, 13]
• Harsh or delayed gear shifts, particularly a harsh 1-2 shift.
• Transmission slipping between gears, where engine RPMs rise without an increase in speed.
• Transmission stuck in one gear (limp mode), often 3rd or 5th gear.
• Check Engine Light or transmission warning light is on.
• Reduced acceleration or a feeling of high revs with no engagement from a stop.
• Increased fuel consumption.

Most Likely Causes

1. Debris in the Transmission Valve Body 🔴 High Probability → Shop Transmission Valve Body As documented in TSBs PIP5100 and PIP5100A, the valve body separator plate orifices are susceptible to blockage. This is often caused by material from failing aftermarket transmission filters. The small passages become clogged, preventing correct hydraulic pressure regulation.
   How to confirm: Drop the transmission pan and remove the valve body. Visually inspect the separator plate and valve body channels for debris or blockages. Check the installed filter for an aftermarket brand name or signs of disintegration.
   Typical fix: Clean the valve body and separator plate thoroughly with an appropriate solvent. If the plate is damaged, warped, or the orifices cannot be cleared, it must be replaced. Replace the transmission filter with a high-quality OEM part.
   Est. part cost: $20-$50 for a new separator plate gasket or plate.
2. Failed Pressure Control Solenoid 'E' (within TEHCM) 🟡 Medium Probability → Shop Transmission Clutch Pressure Control Solenoid On the 6L80 transmission, the solenoids are part of the Transmission Electro-Hydraulic Control Module (TEHCM), also called the TCM. These integrated units can fail due to electrical faults or internal wear, requiring replacement of the entire module.
   How to confirm: A professional scan tool (like a Tech2) can command the solenoid on and off to test its response. The solenoid's internal resistance can also be tested with a multimeter once the valve body is removed. For the 6L80, the expected resistance for a pressure control solenoid is 3-8 ohms.
   Typical fix: Replace the TEHCM (TCM/solenoid assembly) inside the transmission. The new module must be programmed to the vehicle's VIN using a tool with SPS (Service Programming System) capabilities.
   Est. part cost: $450-$650 for a new ACDelco TEHCM. Aftermarket options may be cheaper.
3. Low or Contaminated Transmission Fluid 🟡 Medium Probability → Shop Transmission Assembly
   How to confirm: Check the transmission fluid level and condition using the dipstick (if equipped) or check plug. The fluid should be at the correct level, bright red, and not have a burnt smell or contain visible debris.
   Typical fix: Top off the fluid if low. If the fluid is dirty, burnt, or full of debris, perform a fluid and filter change. Use only DEXRON-VI fluid. This may be a temporary fix if debris is already in the valve body.
   Est. part cost: $80-$150 for fluid and an OEM filter.
4. Damaged Internal Wiring ⚪ Low Probability
   How to confirm: After dropping the transmission pan, visually inspect the wiring harness leading to and from the TEHCM for any signs of damage, corrosion, or loose connections at the main connector.
   Typical fix: Repair the damaged section of the harness or replace the internal harness if necessary.
   Est. part cost: $50-$100 for a new internal harness.

Rare But Worth Checking

• Internal Mechanical Failure: If the transmission pan is full of metal shavings or clutch material, it indicates a larger problem like a failed torque converter or burnt clutch packs, which would require a full transmission rebuild or replacement.
• Worn Valve Body Bores or Check Balls: → Shop Transmission Valve Body In some cases, even with a functional TEHCM, the hydraulic passages or check balls within the valve body itself can wear out. This causes pressure loss that the TCM misinterprets as a solenoid fault. A technical bulletin notes that the #1 plastic check ball can erode from its original 0.250" size, get stuck in the separator plate, and cause a neutral condition. This would require valve body repair or replacement.

Diagnosis Steps

1. Check for other stored DTCs, paying special attention to P0700 and other transmission codes. [Bulletin #PIP4379K]
2. Check the transmission fluid level and condition. Ensure it is clean, red, and at the proper level.
3. Use a professional scan tool (e.g., GM Tech2) to monitor live data, command the Pressure Control Solenoid 'E' on and off, and perform a TCM cleaning/performance test if available.
4. Drop the transmission oil pan and inspect for excessive metal debris or clutch material. A small amount of fine grey material on the magnet is normal.
5. Note the type of transmission filter installed. If it is an aftermarket spin-on type, inspect it for signs of failure, as this is a known cause of debris per TSB #PIP5100A.
6. Remove the valve body assembly (TEHCM).
7. Inspect the valve body separator plate orifices for any blockage or debris. [Bulletin #PIP5100]
8. If no debris is found, test the resistance of the solenoid. The expected resistance for Clutch Pressure Control (PWM) solenoids is 3-8 ohms. Compare readings to manufacturer specifications if available.
9. Inspect the internal wiring harness and the main external connector for any visible damage or corrosion.

Parts You'll Likely Need

• Transmission Control Module (TEHCM) (OEM #24256523) — On the 6L80 transmission, the solenoids are integrated into this module. If a solenoid fails, the entire unit must be replaced and programmed. This part number is for the Gen 1 TEHCM with black solenoids, used in many 2011-2013 models. Always verify with VIN.
  Trusted brands: ACDelco (GM Genuine)
  OEM price range: $450-$650
  Aftermarket price range: $350-$550
• Transmission Valve Body Separator Plate (OEM #24245720) — This plate's orifices can become clogged with debris, as noted in TSBs. It may need to be replaced if cleaning is insufficient or if it's warped.
  Trusted brands: ACDelco
  OEM price range: $20-$40
  Aftermarket price range: $15-$30
• Automatic Transmission Filter Kit (OEM Recommended) — A failed aftermarket filter is a documented cause of debris. Always replace with a quality OEM filter during service to prevent recurrence. [Bulletin #PIP5100A]
  Trusted brands: ACDelco
  OEM price range: $40-$60
  Aftermarket price range: $20-$40
• DEXRON-VI Automatic Transmission Fluid — This is the only specified fluid for the 6L80 transmission. A fluid and filter change is required for any internal transmission service.
  Trusted brands: ACDelco, Valvoline, Mobil 1
  OEM price range: $8-$12 per quart
  Aftermarket price range: $7-$10 per quart

Related Codes That Often Appear With This One

• P0700 — This is a generic Transmission Control System Malfunction code that simply indicates the TCM has stored a fault. It will almost always be present with P2723. TSB #PIP4379K specifically advises diagnosing other codes first.
• P0751 — This code relates to Shift Solenoid 'A' Performance/Stuck Off. It often appears with other solenoid and gear ratio codes when there is a systemic issue like debris or low fluid pressure. [Bulletin #PIP4379K, #PIP5100A]
• P0731 - P0735 — These codes indicate incorrect gear ratios for gears 1 through 5. They are triggered when the transmission slips or fails to engage a gear properly, which is a direct consequence of the solenoid malfunction indicated by P2723. [Bulletin #PIP4379K, #PIP5100A]

Technical Service Bulletins (TSBs) & Recalls

• PIP5100A
• PIP5100
• PIP4379K

Platform-Specific Known Issues

• A known issue documented in TSB #PIP5100A involves aftermarket spin-on transmission filters disintegrating and causing debris to block orifices in the valve body separator plate, leading to P2723 and other pressure-related codes.
• Owner experiences confirm the TSB's validity. In a Tahoe Yukon Forum thread, a user with P2723 and shifting problems dropped the pan to find dark fluid and gunk, a common precursor to discovering clogged passages or a failing TEHCM.

Mechanic-Grade Diagnostic Values

• Pressure Control Solenoid (PCS) and TCC Solenoid Resistance — expected: 3 - 8 Ohms. Failure: A reading outside this range indicates a faulty solenoid coil.
• Shift Solenoid (On/Off type) Resistance — expected: 20 - 40 Ohms. Failure: A reading outside this range indicates a faulty solenoid coil.
• Line Pressure at Idle (in Park/Neutral) — expected: 45 - 80 PSI. Failure: Significantly lower pressure can indicate pump, valve body, or internal leak issues.

Scan Tool Commands That Help

• GM GDS2 / Tech2: Solenoid Valve Test — During diagnosis, this function allows a technician to individually command each solenoid on and off to check for an audible 'click' and monitor pressure changes, helping to pinpoint a specific solenoid that is electrically or mechanically stuck.
• GM GDS2 / Tech2: Transmission Service Fast Learn — This procedure is mandatory after replacing the TEHCM. It resets and relearns the transmission's adaptive pressure values. Skipping this step can lead to harsh shifts and potential damage to the new components.
• GM GDS2 / Tech2: Solenoid Cleaning Process — If a performance DTC is present, this automated function cycles all solenoids to attempt to flush debris from the solenoids and their hydraulic circuits. If the code returns after cleaning, the TEHCM likely needs replacement.

Wiring & Ground Locations

• TEHCM Main Connector — On the passenger side of the transmission case, connecting the external vehicle harness to the internal TEHCM.. This is the primary electrical interface for the entire transmission control system. Corrosion or an improperly seated twist-lock connector can cause a loss of power, ground, or data to the TEHCM, leading to various codes including P2723. It is a common point of failure and should be inspected before assuming internal faults.
• G110 — On the rear of the passenger side cylinder head on V8 engines.. This is a major engine and harness ground. While not directly for the transmission case, a poor connection here can introduce electrical noise and voltage stability problems for the entire powertrain network, potentially affecting TCM/TEHCM operation and causing erroneous codes.

Real Owner Repair Stories

• silveradosierra.com user report (2011 Chevrolet Silverado) — Harsh 1-2 shift and hard downshifts when coming to a stop, with code P2723 present.
  ❌ Tried (didn't work) A transmission fluid and filter change did not resolve the issue.
  ✅ What actually fixed it The final repair was the replacement of the entire TEHCM assembly inside the transmission, which was then programmed to the vehicle. This completely solved the harsh shifting problem and cleared the code.

OEM Part Supersession History

• 24246916 → 24245720 — Design update for the 6L80 valve body separator plate.
  Heads up: If replacing the early design plate (24246916), it must be replaced with the later design (24245720) and a specific clutch select valve spring kit must also be installed.

Model Year Variations Within This Range

• 2011-2013: The external transmission connector is a 16-pin twist-lock style. It is critical that this connector is fully seated and locked to prevent no-communication codes with the internal TEHCM. A common user error is not twisting the connector until it clicks and locks, leading to a misdiagnosis of a failed TEHCM.