Firebird V6-3.8L VIN K (1995)
Coolant: Technical Service Bulletins
Engine Coolant Heater Assembly - Coolant Leak
File In Section: 6 - Engine
Bulletin No.: 67-62-03
Date: September, 1996
Subject:
Coolant Leak at Engine Coolant Heater Assembly
(Clean Plug Bore, Apply Lubricant, Install New Heater)
Models:
1995-96 Chevrolet Camaro
1995-96 Pontiac Firebird with 3800 Series II Engine (VIN K - RPO L36)
Condition
Some owners may comment about a coolant leak and the technician determines the coolant leak originates at engine coolant heater assembly located on
the right side of the engine.
Cause
The O-ring around the perimeter of the coolant heater may have been damaged during installation at the vehicle assembly plant due to insufficient
cleaning of the plug bore.
Correction
1.
Verify the coolant leak originates at the coolant heater via visual inspection on a hoist.
2.
Drain coolant from the radiator.
3.
Remove coolant heater.
4.
Thoroughly clean the plug bore by removing any burrs, sealant, compound, paint or rough spots.
5.
Apply a coat of lubricant, GM P/N 12377985 or equivalent, to the 0-ring and machined surface of the bore.
6.
Tuck the yoke end of the heating coil into the inside of the engine block and position heater coil so the electric socket faces toward the front of the
engine.
7.
Torque bolt to 1.9 N.m (17 lb in.).
8.
Reinstall coolant in radiator.
9.
Warm engine to operating temperature and verify coolant leak has been repaired.
Parts Information
Description
Part Number
Heater Assembly -
24503486
Engine Coolant
Cord Assembly -
10246740
Engine Coolant Heater
Lubricant -
12377985
14 oz. cartridge
(GM spec 9985038)
Parts are currently available from GMSPO.
Warranty information
For vehicles repaired under warranty, use:
