Sierra Classic 2500 4WD V8-6.0L (2007)
Valve Body: Customer Interest
A/T - Slips/Harsh Shifts/Delayed Shifts/Multiple DTC's
Bulletin No.: 08-07-30-001
Date: January 16, 2008
INFORMATION
Subject:
4L80E, MT1 and 4L85E, MN8 Simplified Valve Body Reconditioning Instructions DTC P0741, P0742, P0751, P0752, P0756, P0757, P0894 Harsh or
Delayed Shifts Slips No Drive No Reverse
Models
This bulletin is designed to provide easy to follow valve body reconditioning instructions and new illustrations to simplify reassembly of the valve body
and list other service information documents that are related to the 4L80X transmission family.
Related Service Document
PIP3427A - SES light on DTC P0757 harsh shifts delayed 2-3 shift no third gear or slip in third or reverse or a 2-3 shift flare. Debris stuck in the # 11
check ball or a sticking pintle in the 2-3 shift solenoid.
Inspection Procedure
