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International Automotive Technicians Network
2001 Chevrolet Express 3500 5.7L Poor Idle Quality
Posted to GM Driveability on 3/1/2007 7 Replies

this poblem is very intermittent. doesnt matter if van is cold or [...] started may idle at base idle or may idle at 1800 [...] scanner plugged in on function test for iac. iac does not move to commands. cycle key with 10 to 20 second intervals will start to w...

7 Replies Received (View Replies)

  Related Documents & Media  2001 Chevrolet Express 3500

 
Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Express 3500

VIN 1GCHG39R11
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIntermittently

Trouble Codes

P0506Idle Speed Control System Lower Than Expected
P0507Idle Speed Control System Higher Than Expected
Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Express 3500

VIN 1GCHG39R11
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIntermittently

Trouble Codes

P0506Idle Speed Control System Lower Than Expected
P0507Idle Speed Control System Higher Than Expected