Subject: New Temperature Gauge
Model and Year: 1955 Passenger Car - V-8 Models
Source: Chevrolet Service Bulletin
Bulletin No: DR-222
Date: October 13, 1955
To: All Chevrolet Dealers:
Some overheating complaints on late 1955 Passenger Models equipped with V-8 engines have been received which can be directly attributed to the recalibration of the temperature gauge as no water loss occurs.
The new gauge may operate in a range to the right of the center white dot when the engine has become normalized. The range of operation will vary with various temperature thermostats and a sharp rise can be expected when engine is idled excessively or when just stopped due to residual heat.
As a result of "running cool" on complaints on early V-8 engines, the temperature gauge was recalibrated to provide a more accurate indication of V-8 engine operating temperature.
This change has been in production about 60 days.
Description * New Part No.
GAUGE - 1513145
* Gauge, Part No. 1512931, used in early V-8 engines continues to be used in 6 cylinder models.
Manager, Service and Mechanical Department
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
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Article ID: 147
Created: July 6, 2014
Last Updated: July 6, 2014
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