K 2500 Truck 4WD V8-379 6.2L DSL VIN J FI (1992)
Fluid Line/Hose: Customer Interest
A/T - Cooler Lines Cracked or Leaking
Number:
92-182-7A
Section:
7A
Date:
April 1992
Corporate Bulletinn No.: 267102
ASE No.: A2
Subject:
AUTOMATIC TRANSMISSION LINES CRACKED OR LEAKING
Model and Year:
1988-92 C/K TRUCKS WITH 6.2L DIESEL ENGINE
Some owners of 1988-92 C/K trucks equipped with a 6.2L diesel engine and a 4L60 or THM400 (RPO MD8 or M40) automatic transmission may
experience cracked or leaking automatic transmission cooler lines at or near the transmission fittings.
These cracks may be caused by the cooler lines going into resonance or vibrating at low engine idle speeds causing the lines to fatigue. To correct this
condition, replace the cracked/leaking lines and install a support bracket.
SERVICE PROCEDURE: