Dynasty L4-153 2.5L SOHC (1988)
Torque Converter Clutch Solenoid: Customer Interest
TCC Solenoid - Surge at Steady Cruise
1987-1988 C-K-E-GH-J-P Body Equipped With 2.5L & 3.0L Engine
1987-1988 S Body Equipped With 3.0L Engine
Lock-Up Torque Convertor Surge/ Buck at 35-55 MPH
March 28, 1988
18-03-88 REVISION A
This bulletin replaces Technical Service Bulletin 18-13-87 and 18-03-88 which should be removed from your files. A required revision has been made to
the warranty labor operation number. This new labor operation number becomes effective with the issuance of this bulletin March 28, 1988.
A surge may be noticed at steady cruising speeds above 35 mph. In addition, bucking may occur under light deceleration conditions, especially when
cresting a hill.
The above conditions can be diagnosed by disconnecting the transmission lock-up torque converter solenoid, and driving the vehicle under the above
conditions. If the problem goes away, follow the repair procedure below. If either problem is still present, refer to the Diagnostic Test Procedure for
Driveability Kit PN 4419447
Wiring Jumper Assembly
Lock-Up Solenoid Cap
Authorized Modification Label
The following procedure involves disconnecting the lock-up torque convertor solenoid. The customer should be advised that after this repair is
performed, a loss in fuel economy of 1 to 2 miles per gallon may be noticed, depending on driving conditions.