Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 623 (ENGINE CONTROLS - 3.4L - INTRODUCTION - SERVICE & REPLACEMENT)REPAIR INSTRUCTIONSIDLE AIR CONTROL (IAC) VALVE REPLACEMENTREMOVAL PROCEDURE
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Removal Procedure
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Removal Procedure
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the throttle control cable bracket from the throttle body. Refer to Accelerator Controls Cable Bracket Replacement .
- Remove the canister purge solenoid valve. Refer to Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement .
- Disconnect the idle air control (IAC) electrical connector.
- Remove the idle air control valve attaching screws.
- Remove the idle air control valve.
- Remove the idle air control valve O-ring.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.