Avalanche 2500 4WD V8-8.1L VIN G (2003)
3. Connect the heater and surge tank hose to the heater core.
IMPORTANT: Firmly push the quick connect onto the heater core pipe until you hear an audible click.
4. Install the heater and surge tank hose to the mounting clip.
5. Install the air intake tube.
6. Fill the cooling system.
Heater and Air Conditioning (A/C) Pipe Repair - Auxiliary
TOOLS REQUIRED
J 41425 A/C Line Repair Kit
Do not service the rear A/C or heater lines as a complete unit. Service the rear A/C or heater lines as a sectional repair.
You can obtain the various sections of line through GMSPO.
Use the J 41425 when any of the following actions damage the rear A/C or heater lines:
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Rub-through
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Collision damage
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Leakage in the system
Minimum Tube Length Required Table
IMPORTANT: When you section the rear A/C or heater lines, ensure that the correct minimum length remains in the straight part of the line on both
sides of the splice.
Follow the Straight Line Repair procedure in order to repair line damage in a straight section of line.
Follow the Line Sectioning Repair procedure in order to repair any damage in a bend area. Do not repair the rear A/C or heater lines in a bend area,
replace the lines. Maintaining the original line shape will prevent vibrations and rub-through.
Straight Line Repair
1. Recover the refrigerant, if repairing the A/C lines.
2. Drain the coolant, if repairing the heater lines.
