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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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3.2.4 GMPT Interface with HVAC System
In order to properly attach the engine to the vehicle and interface with the Vehicle Cooling
System the following cooling issues must be considered:
This engine is designed to operate with a surge tank that shall be located at the highest point of
the cooling system.
a. Coolant contamination level e. By-pass System
b. Corrosion protection 1. Deaeration
1. Coolant change intervals 2. Fill rate & capacity
2. Coolant type 3. System pressure and Draw Down
c. Ports/Sealing f. Engine Oil Cooler
1. Water pump d. Temperature Management
1. Thermostat and Low Coolant Sensor location
Figure 3.2.1-I to 3.2.1-XVIII shows the PCM Engine to Vehicle Mechanization Diagram with this
interface.
3.2.4.1 Fan Cooling System
Figure 3.2.1-I to 3.2.1-XVIII shows the PCM Engine to Vehicle Mechanization Diagram with
this interface. The following table shows the different Fan ASM and Components coupled to
the L35 engine per GM platforms.
Engine Air Fan ASM P-Truck C/K Truck G-Van M/L -Van S/T Truck
( 6K1 )
Tensioner 12561094 12561094 12561094 12561094 12561094
Bolt/Screw Tensioner 11517648 11517648 N/A N/A N/A
11517649 N/A 11517649 11517649 11517649
Belt 12559620 12569349 12564749 12564762 12564761
12564759/60 12569350 12564760 12564759 12564763
12564763/4 N/A 12564761 N/A 12564759
N/A N/A 12564763 N/A N/A
Blade ASM FAN 15738321 15017911 15002575 15976889 15600390
Blade ASM FAN N/A N/A 15657381 N/A 15976889
Bolt/Screw Blade 15548719 11516869 15548719 15548719 15548719
Clutch ASM FAN 15735393 22149836 22135998 15976997 15154901
15735394 22149880 22136704 N/A 22136712
N/A 15710101 N/A N/A N/A
Engine Pulley Crank Shaft 10085754 10085754 10085754 10085754 10085754
Bolt/Screw Pulley Crank Shaft 10179287 10179287 10179287 10179287 10179287
Pulley FAN 12550053 12550053 12550053 12550053 12550053
Bolt/Screw Pulley Fan 11516292 11516292 11516292 11516292 11516292
Pulley ASM Belt Idler 12555609 12555609 10239930 10239930 10239930
Pulley ASM Belt Idler 12556612 12556612 12557819 12557819 12557819
Pulley ASM Belt Idler 12557819 N/A N/A N/A N/A
Bolt/Screw Fan Idler 11515756 11515756 11515756 11515756 11515756
12550053 N/A N/A N/A N/A