× 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
2007 Chevrolet Silverado 1500 Classic WT 5.3L MIL Lamp on
Posted to GM Driveability on 1/1/2010 17 Replies

Hey all, Kind of have a problem here. I have a 07 silverado that is setting a P0121 but the only way I can get it to act up is when I accelerate at 3/4 throtle up to 55mph from a stop (part of drive cycle) When this does happen it locks up my Modis system and ...

17 Replies Received (View Replies)

  Related Documents & Media  2007 Chevrolet Silverado 1500 Classic WT

 
Message Closed w/FIX

car Vehicle Data

2007 Chevrolet Silverado 1500 Classic WT

VIN 1GC5C1M0Z7
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Accel

Trouble Codes

P0121Throttle Position Sensor Range/Performance
Message Closed w/FIX

car Vehicle Data

2007 Chevrolet Silverado 1500 Classic WT

VIN 1GC5C1M0Z7
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Accel

Trouble Codes

P0121Throttle Position Sensor Range/Performance