Savana 3500 V8-4.8L (2009)
20. Extract a portion of the ECT sensor harness wiring and connector from the protective conduit. Cut off the ECT sensor harness connector and
wiring.
21. Determine a routing path for the ECT sensor jumper harness wires so that they can be secured TO or WITHIN an existing protective conduit.
Note
This step is to set up and verify the length of wiring that is required before cutting.
22. Route the ECT sensor jumper wires and then enclose them in their own protective conduit in order to VERIFY the length that is required.
23. Cut the ECT sensor jumper wires to the appropriate length.
Note
Adjust splice locations so that each splice is at least 40 mm (1.5 in) away from the other splice or connector.
24. Splice the ECT sensor jumper wires to the ORIGINAL ECT HARNESS LOCATION using DuraSeal weatherproof splices. Refer to Splicing
Copper Wire Using Splice Sleeves in SI.
Note
Adjust splice locations so that each splice is at least 40 mm (1.5 in) away from the other splice or connector.
25. Splice the ECT sensor jumper wires to the ECT SENSOR HARNESS CONNECTOR using DuraSeal weatherproof splices. Refer to Splicing
Copper Wire Using Splice Sleeves in SI.
26. Connect the ECT sensor harness connector to the ECT sensor.
27. Secure the ECT sensor jumper wires that are in their own protective conduit TO or WITHIN the existing harness conduit using tie straps.
Important
You MUST run the engine at the specified RPM and until it reaches normal operating temperature and then allow it to idle as indicated in SI. The
engine MUST then be allowed to cool down in order to top off the coolant level as needed.
28. Fill the cooling system to the proper level. Refer to Cooling System Draining and Filling in SI.
29. Pressure test the cooling system. Refer to Cooling System Leak Testing in SI.
30. Use a scan tool to clear any DTCs.
Relocating the Engine Coolant Heater Cord
Important
For reference, the procedure and graphics that are shown are from a Chevrolet Silverado, but are similar for the other vehicles listed above.
1. Turn OFF the ignition.
2. Ask the customer where they would prefer the extension cord to exit from the engine compartment in order to determine the required extension
cord length.
3. Obtain an extension cord with the following features:
-
120 volt
-
14/3 gauge
-
15A capacity
-
Three prong
-
Polarized plug and receptacle
-
Chemical resistant
-
Grounded terminals
-
Designed for use in a cold outdoor environment
-
Outer jacket resistant to deterioration from moisture, abrasion and exposure to sunlight
-
Maximum length of 2.5-3 m (8-10 ft)
4. Release enough of the clips that retain the engine coolant heater cord to the vehicle to provide the necessary length for repositioning.
5. Apply dielectric grease to the electrical contacts of the heater cord receptacle and the extension cord plug to prevent corrosion. Use GM P/N
12345579 (in Canada, use P/N 10953481) or an equivalent.
6. Connect the heater cord receptacle to the extension cord plug and wipe OFF any excess grease.
