A/T - MIL ON/DTC P1870 Stored in Memory: Overview
TSB SBO3-05-S001DTC P1870 and the 4L30E Automatic Transmission
(This Bulletin Supersedes Bulletin SB02-05-S003)
ISSUE DATE: MAY 2003
Affected Vehicles
1996-1999 Trooper (UX), 1996-1997 Rodeo (UC), 1998-1999 Rodeo (UE), 1998-1999 Amigo (UA) and 1999 VehiCROSS (VX).
Service Information
Condition:
NOTE:
This bulletin has been revised to clarify important diagnostic steps and warranty claim information.
Transmission indicator light may be on and DTC P1870 is set in the [1][2]PCM (Powertrain Control Module).
Possible Cause:
Improper torque of the main case bolts permitted the adapter plate gaskets to slip out of position. The out of position gasket created an internal hydraulic pressure leak that created low fluid pressure to the lockup clutch.
Correction:
Follow the procedures in this bulletin to replace the adapter plate gaskets.
Special Tool Requirements
Kent-Moore P/N J-8763-02 (Trans Holding Fixture) & J-3289-20 (Base)
Kent-Moore P/N J-23327 (Reverse Spring Seat Compressor)
Kent-Moore P/N J-38588 (Two 9 inch Guide Pins)
Kent-Moore P/N J-38558 (Turbine Shaft Seal Installer & Sizer)
Parts Information
Warranty Claim Information
Use the labor operations shown.
Disclaimer