cannot adjust throttle body according to procedure. the speed will not adjust up or down with paper clip in a and b and ignition on and iac unplugged.
What is your question?
have new iac and rebuilt throttle body from rock auto. Idleing at 1800rpm with or without iac in place.
What makes this problem better or worse?
N/a
How long has your 1994 GMC Yukon had this problem?
long time
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What are the best GMC repair shops?
RepairPal Certified shops can diagnose and repair your 1994 GMC Yukon. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
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Blackstone Complete Auto Care
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Boyd's Tire & Service - Columbus
5263 Godown Rd
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Opens 8:00 AM Tue
Tuffy Tire & Auto Service Center - Grandview
1524 W 5th Ave
Columbus, OH
Closed
Opens 8:00 AM Tue
Excite Auto Repair & Towing
3430 Westerville Road
Columbus, OH
Closed
Opens 9:00 AM Tue
All In Auto Service
5200 Fisher Road
Columbus, OH
Closed
Opens 8:00 AM Tue