Solenoids and Valves

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   4T65E
Borg Warner Pressure Control Solenoid
97-02
$49.95   The PCS (Pressure Control Solenoid) is the root cause to many problems in the 4T65E and should ALWAYS be replaced if the transmission is opened up for repair! We use the latest ones from Borg Warner in our rebuilds which have proven much more reliable than the originals.  These work in 97-02 model year transmissions.  This solenoid can be referred to as a PCS, EPC, or Force Motor
  4T65E
OE AC Delco
Bosch style
Pressure Control Solenoid 03+
 
 $59.95 The PCS (Pressure Control Solenoid) is the root cause to many problems in the 4T65E and should ALWAYS be replaced if the transmission is opened up for repair! This solenoid is the style used in 2003+ models and is not backwards compatible to prior years.  This solenoid can be referred to as a PCS, EPC, or Force Motor
   4T65E
OE AC Delco
Shift Solenoid

$19.95   These are new OE AC Delco shift solenoids.  To date we have found these hands down to be the most reliable shift solenoids for this transmission and are what we use in all of our rebuilds.
   4T65E
Borg Warner TCC Solenoid
 $31.95 Though not a real common problem part it is a good idea to replace these also during a rebuild.  We use the latest Borg Warner desined parts here also.  A bad TCC solenoid can cause lockup all the time from 2nd-4th gear, or it can cause no lockup at all as well as cause a number of trouble codes. 
  4T65E 97-02 Pressure Switch Manifold    This component lets the pcm/tcm know which hydraulic range the transmission is in once the engine is running and also verifies TCC hydraulic operation being on or off.  This version is for the earlier 97-02 model years.  These can easily be tested and if found bad or show poor resistance while testing it should be replaced.
   4T65E 03+ Pressure Switch Manifold    For the 03+ model years the switches for each hydraulic range were eliminated.  There is only one pressure switch on this 03+ style pressure switch manifold and it is used for TCC hydraulic operation only.
   Sonnax 4T65E Boost Valve and Sleeve set  $59.95 The boost valve and sleeve is a common wear area in the 4T65E transmission.  When wear becomes excessive it can cause poor pressure rise and soft shifts as well as reverse pressure problems and slippage.  Code P1811 can also be result of this part being worn.  This Sonnax version is redesigned to restore hydraulic integrity and also includes hard anodized aluminum valves to better resist wear.  
  Sonnax 4T65E TCC Apply Valve  $34.95  This aftermarket TCC apply valve replaces the stock piece and has been upgraded in several areas.  A bad valve can caues code P0741 and no lockup, this one is designed to work well in valve bodies with wear.  They can be rather difficult to install so only experienced users should buy these. 
   Sonnax 4T65E 
Converter Relief Valve
$4.95  This valve replaces the stock relief ball that is in the channel plate.  It was redesigned to allow TCC overpressure occur at a lower pressure than stock to prevent the TCC clutch from destroying the converter body
       
       
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