Blazer 4WD V6-4.3L VIN X (2005)
1. On a new IAC valve, measure the distance between the IAC valve pintle and mounting flange. Use finger pressure to slowly retract the pintle if the
distance is more than 28 mm (1-1/8 in).
IMPORTANT: Use an identical part when installing a new idle air control (IAC) valve. The IAC valve pintle shape and dimensions are designed for
specific applications.
2. Lubricate the IAC valve O-ring with clean engine oil.
3. Align the flange holes with the mounting holes on the throttle body assembly.
4. Insert the IAC valve through the O-ring into the throttle body assembly.
5. Install the IAC valve mounting screws.
NOTE: Refer to Fastener Notice in Service Precautions.
IMPORTANT: The screws used to attach the IAC valve are coated with thread locking adhesive. Clean the attaching screw threads and apply thread
locking material GM P/N 1052624 or equivalent.
Tighten the screws to 3 N.m (27 lb in).
