Cadillac P1887: TCC Release Switch Circuit Malfunction (4T65-E)
Is your scanner showing Cadillac P1887?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1887: TCC Release Switch Circuit Malfunction (4T65-E)
OVERVIEWWhat Does The Cadillac P1887 Code Mean?
With the engine speed over 500 rpm, TR switch in D4, Torque Converter Clutch (TCC) commanded on, TCC slip speed is -20 to +40, the Powertrain Control Module (PCM) detects that TCC Release pressure was present (the switch is open).
What Are The Potential Causes Of The Cadillac P1887 Code?
- TCC release switch signal circuit is open
- Turbine shaft O-ring seal leaks, oil seal rings missing/damaged.
- TCC control valve damaged or No. 1 check ball is damaged
- Spacer plate release exhaust blocked or case cover or spacer plate gaskets damaged
- TSB 02-07-30-022A contains a repair procedure for this code
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> KAIWEETS Digital Multimeter
>>> HERCOO GM 4L60 4L60E 4L65E TH700-R4 TH200-4R TCC Lock Up Converter Clutch Solenoid
>>> GM Genuine Parts 24241782 Automatic Transmission Control Valve Body Spacer Plate
>>> GM Genuine Parts 24224655 Automatic Transmission Turbine Shaft Fluid Seal
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac P1887, DTCDECODE.
