Engine - Cylinder Damage Due to Glow Plug Breaking

FILE IN SECTION: 6E - Engine Fuel & Emission

BULLETIN NO.: 57-63-03

DATE: February, 1995

SUBJECT:
Possible Internal Engine Cylinder Damage Due to Glow Plug Breaking afier Replacement of Failed Injector Nozzle

MODELS:
1982-95 Chevrolet and GMC Truck Light Duty Models
with 6.2L, 6.5L Diesel Engines (VINs C, F, J, P, S, Y - RPOs LH6, L65, LL4, L49, L56, L57)

Whenever an injector nozzle has failed, the temperature in that cylinder has increased and may cause damage to the glow plug. The glow plug must be replaced at the same time a failed injector nozzle is replaced, even if it checks out as being good.

If the glow plug is not replaced, internal engine damage may occur. The glow plug may break and parts of it may damage the engine.

Follow the procedure for glow plug replacement in the Service Manuals.

PARTS INFORMATION

P/N ENGINE NAME YEAR

25163212 LL4, LH6, L65 Glow Plug 1982-1993

25163212 L49, L56, L57, L65 Glow Plug 1994-1995

Parts are currently available from GMSPO.

WARRANTY INFORMATION
For vehicles repaired under warranty, use:

LABOR
OPERATION DESCRIPTION TIME

J4760 Plugs, Glow (Diesel)
Replace right bank (one or all) Use
published
J4761 Plugs, Glow (Diesel) labor
Replace left bank (one or all) operation
time
J4767 Plugs, Glow (Diesel) Replace
left bank and right bank (all)