× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2003 Chevrolet Express 1500 4.3L
Posted to GM Engine on 5/29/2012 21 Replies

With AC off, vehicle runs fine. When AC is turned on and vehicle is in gear it sounds as if it is dieseling. Starts out faint when cold and gets louder as it motor heats up. Replaced AC tensioner but no change. Noise is gone with belt removal. When it is makin...

21 Replies Received (View Replies)

  Related Documents & Media  2003 Chevrolet Express 1500

 
Message Closed

car Vehicle Data

2003 Chevrolet Express 1500

VIN 1GCFG15X93
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedUnknown
ConditionsKnocking
Message Closed

car Vehicle Data

2003 Chevrolet Express 1500

VIN 1GCFG15X93
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedUnknown
ConditionsKnocking