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ENGINE APPLICATION MANUAL GM Powertrain
Gasoline 4.3L V6 90 Degree Revised: 08/15/2000
File: c:\data\manuales\v6-truck\am43v6#3.doc
Contact:Luis Nespolo - (248) 857-1558 Printed: 8/15/00
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The following table shows the different Radiator ASM and Components coupled to the L35
engine per GM platforms.
3.2.4.3 Operating Conditions and Measures
3.2.4.3.1 Heat Rejection
Heat rejection levels for combined engine coolant and oil are measured per GM Test #9
and are summarized in the table below. The values for the specific heat rejection to the
coolant and Lube oil are shown below in table 3.5.3.1-I.
Engine Coolant Radiator P-Truck C/K Truck G-Van M/L -Van S/T Truck
( 13A )
Radiator ASM 52473151 52486600 15766916 52482175 52472963
Radiator ASM N/A 52486601 15762434 N/A 52472964
Radiator ASM N/A N/A 15762437 N/A N/A
Radiator ASM N/A N/A 15766914 N/A N/A
Cap Radiator 15977333 15982188 15982188 15982188
Reservoir Coolant ASM 15687277 15030565 15720807
15058245 15720808
Bolt Screw or Retainer 11509745 11515904 22535007 15999164
Bolt Screw or Retainer N/A N/A N/A N/A 15685170
Bracket ASM 15996772 15958651 N/A
Cap Reservoir 14054390
Hose Reservoir Coolant 9439035 15007480
Hose Reservoir Coolant 9439124 15689607
Hose Reservoir Coolant 9439145
Clamp 3786276 1622710 1622710 1626260
Clamp 14029188
Table 3.5.3.1-I 4.3L V6 90 Degree Engine Heat Rejection
3.2.4.3.2 System Pressure
GMPT engines are designed to operate with a pressurized cooling system and surge tank.
System pressure is controlled with a spring loaded pressure (RC33) relief cap with a nominal
setting of 15 Psi.
RPM L35 L35 Condition
Truck Marine
Applications Applications
Heat rejection Heat rejection
BTU/Min BTU/Min
2000 1339 n/a Road Load
2800 2038 n/a Road Load
3600 2937 n/a Road Load
1600 1536 n/a 7.2% Grade
2400 2226 n/a 7.2% Grade
2000 2209 2336 WOT
3000 3001 3202 WOT
4000 3910 4274 WOT
4200 4080 4314 WOT
4400 4309 4799 WOT
4600 4460 4716 WOT
750 486 539 Idling
1300 1016 1074 Parked
2200 1756 1826 Parked