C 1500 Truck 2WD V6-4.3L VIN W (1996)
Temperature Gauge: All Technical Service Bulletins
Engine - Extreme Temperature Gauge Fluctuation
File In Section: 6 - Engine
Bulletin No.: 67-62-01
Date: April, 1996
Subject:
Extreme Engine Temperature Gauge Fluctuation (Install a New Thermostat)
Models:
1996 Chevrolet and GMC C/K, G Models
with 4.3L, 5.0L, 5.7L Engines (VINs M, R, X, W - RPOs L30, L31, LF6, L35)
Condition
Some owners may experience extreme engine temperature gauge fluctuation.
Cause
Thermostat was not optimally positioned to sense true engine coolant temperature.
Correction
Install a new thermostat which increases coolant flow past the thermostat temperature sensing element.
Parts Information
Refer to the following part number when replacing the thermostat:
Part Number
Description
12557859
Thermostat
Parts are expected to be available on April 8, 1996 from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Labor Time
J3500
Use published labor
operation time.
