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2003 Chevrolet Express 2500 6.0L Poor Idle Quality
Posted to GM Driveability on 3/16/2009 9 Replies

I am third in line looking at this van. The complaint is an intermitant high idle (varies from [...] RPM). The van has gone weeks at a time with no issues and will also act up for ten key cycles straight. I have inspected the wiring trouble spots - left front ...

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  Related Documents & Media  2003 Chevrolet Express 2500

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Express 2500

VIN 1GCGG29U93
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIdle
Misc.Cal 12593058

Trouble Codes

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

car Vehicle Data

2003 Chevrolet Express 2500

VIN 1GCGG29U93
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIdle
Misc.Cal 12593058

Trouble Codes

P0507Idle Speed Control System Higher Than Expected