GM Service Manual Online
For 1990-2009 cars only

Engine Cooling System Specifications Diesel

Application

Specification

Unit

Standard

Cooling System

Cooling Type

--

Pressurized

Coolant

  • Type

--

DEX-COOL/Silicated Based Coolant

  • Capacity

L (qt)

9 (9.5)

Thermostat

  • Type

--

Wax Pallet

  • Temperature (Opened Initially)

°C (°F)

78-82°C (172-180°F)

  • Temperature (Completely Open)

°C (°F)

95°C (203°F)

  • Temperature (Completely Closed)

°C (°F)

75°C (167°F)

Cooling Fan

  • Fan

--

Electrical Dual Fan

  • Number of Blade

EA

5 (Main)/7 (Aux)

  • Diameter

mm (in)

Main: 340 mm (13.4 in)

Aux: 320 mm (12.6 in)

  • ON Temperature at Low Speed

°C (°F)

100°C (212°F)

  • OFF Temperature at Low Speed

°C (°F)

97°C (6°F)

  • ON Temperature at High Speed

°C (°F)

105°C (221°F)

  • OFF Temperature at High Speed

°C (°F)

102°C (215.6°F)

Surge Tank

  • Open Pressure of the Pressure Valve

kPa/psi

137.3 (19.91)

  • Open Pressure of the Vacuum Valve

kPa/psi

9.81 (1.42)

Water Pump

  • Type

--

Centrifugal

  • Impeller Diameter

mm (in)

85 mm (3.35 in)

  • Number of Impeller Blade

EA

7

Radiator

  • Type

--

Cross Flow

  • Core Width

mm (in)

673 mm (26.50 in)

  • Core Height

mm (in)

414 mm (16.30 in)

  • Core Depth

mm (in)

27 mm (1.063 in)

  • Minimum Cooling Capacity

Kcal/h

83,000