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2005 GMC Savana 2500 4.8L High Idle When Warm
Posted to GM Driveability on 5/5/2017 36 Replies

Iv got a difficult to diagnose issue. When the vehicle is started cold, it idles at about 1250. After it just begins to warm up it goes straight to [...] in park, 1100 or more sitting still in gear. I have checked for intake leaks, replaced the aic, cleaned th...

36 Replies Received (View Replies)

  Related Documents & Media  2005 GMC Savana 2500

 
Message Closed w/FIX

car Vehicle Data

2005 GMC Savana 2500

VIN 1GTGG25V55
Engine4.8 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHigh Idle When Warm
OccursHot

Trouble Codes

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

car Vehicle Data

2005 GMC Savana 2500

VIN 1GTGG25V55
Engine4.8 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHigh Idle When Warm
OccursHot

Trouble Codes

P0507Idle Speed Control System Higher Than Expected