RAM 1500 Truck 4WD V8-5.9L VIN Z LDC (1999)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine - Surge/Lack of Power in 3rd Gear/Erratic Shifts
NUMBER: 18-006-02 REV. C
GROUP: Vehicle Performance
DATE: June 3, 2002
THIS BULLETIN IS BEING PROVIDED IN ADVANCE. THE MDS2 MUST BE OPERATING WITH CIS/ISIS **CD2110** OR HIGHER,
AVAILABLE **JUNE 24**, 2002.
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-006-02 REV. **B**, DATED **MAY 6**, 2002, WHICH SHOULD BE
REMOVED FROM YOUR FILES.
ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE VEHICLES AND MODELS ADDRESSED, A NEW
CALIBRATION FOR 1999 VEHICLES.
SUBJECT:
Flash: Surge **(Beaming)**, Lack of Power in 3rd Gear, and No 3/4
Upshift After 4/3 Downshift
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (**99Cal19D**, 00Cal19,
01Cal04, and 01Cal18).
NOTE:
**THIS BULLETIN ADDS 1999 5.2L AND 5.9L (BE/BR) 4WD RAM TRUCKS WITH SYMPTOM # 2 (COMMONLY CALLED "BEAMING")
BELOW.**
MODELS:
**1999** - 2001 (BE/BR) Ram Truck
NOTE:
THIS BULLETIN APPLIES TO ALL **1999 THROUGH** 2001 (BE/BR) RAM TRUCKS EQUIPPED WITH A 5.2L, 5.9L, OR 8.0L ENGINE
AND CALIBRATION LEVEL PRIOR TO (LESS OR LOWER THAN) THOSE LISTED IN THE OVERVIEW ABOVE EXCEPT 3500 5.9L
CALIFORNIA CAB CHASIS.
SYMPTOM/CONDITION:
Some vehicles may exhibit one or more of the following performance conditions:
1.
Perceived lack of power in third gear due to converter lock-up in 3rd gear. This reprogramming eliminates 3rd gear lock up.
2.
Surge after lock-up (40-45 m.p.h.) in 4th gear. This reprogramming raises torque converter lock-up speed to 52 m.p.h.
3.
Transmission does not upshift from 3rd gear after a 4/3 downshift. (Most often noticed when cruise control is engaged.)
PARTS REQUIRED:
