Ascender 2WD V8-5.3L (2004)
Band Apply Servo: Customer Interest
A/T - 4L60E Harsh 1 - 2 Upshift
Information IB04-05-S007
Diagnostic Information on Harsh 1-2
Upshift
Light Duty ASCENDER 2003 Information Transmission 09/01/04
Diagnostic Information on Harsh 1-2 Upshift
ISSUE DATE: SEPTEMBER 2004
Affected Vehicles
2003-2004 Isuzu Ascender (US/UT) models equipped with 4L60-E Automatic Transmissions.
Service Information
The following four (4) conditions have been found to cause the majority of consistent, harsh 1-2 shift comments.
1.
Chips/Sediment/Debris/Contamination found in the valve body, 1-2 accumulator valve (see figure 1) bore, may cause the 1-2 accumulator valve to
stick or hang-up.
2.
Chips/Sediment/Debris/Contamination found in the valve body, 4-3 sequence valve (see figure 2) bore, may cause the 4-3 sequence valve to stick
or hang-up.
