LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
GMC
>>
1990
>>
Forward Control 3.9 L
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls - Tests W/Codes - TBI
>>
Diagnostic Tests
>>
Code 35: Idle Speed Error (2.5L)
>>
Throttle Body
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Throttle Body
Remove IAC and inspect bore for evidence of IAC valve dragging.