No Engine Braking In Drive 2 (D2) | TSB 88T2007A | C 3500 Truck 2WD V8-454
Figure No. 2 - Valve Body
SERVICE PARTS INFORMATION: (Figure 2)
Service Part No.
Part Description
8626883
Piston-Front Accumulator (303)
This part is currently available from GMSPO.
IMPORTANT:
The plastic Front Accumulator Piston (8629080) should be replaced if found in any 1978-1988 Control Valve Assembly (049).
SERVICE MANUAL REFERENCE:
Refer to the Unit Repair Section of the appropriate Service Manual for proper replacement procedures. For replacement performed under warranty, use
Labor Operation K 6560.