gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Controlled Idle Speed / IAC Counts|Page 419 > < Controlled Idle Speed / IAC Counts
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Idle Speed: Specifications
Minimum Idle Air Rate

Minimum Idle Air Rate 

Engine Speed 

Note: Let engine idle until proper fuel control status  is

 

closed loop.

 

   

  

  

 

Manual Transmission

Neutral

450 +/- 50 rpm 

   

  

  

 

Auto Transmission

Drive

400 +/- 50 rpm 

   

  

  

 

Neutral

475 +/- 50 rpm 

    

  

 

  

  

 

Controlled Idle Speed / IAC Counts|Page 419 > < Controlled Idle Speed / IAC Counts