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International Automotive Technicians Network
2002 Chevrolet Trailblazer LS 4.2L Throttle
Posted to GM Driveability on 2/18/2006 6 Replies

Hello everyone, we have this 2002 Trailblazer that keeps coming back with fault codes (P1221 excessive difference between throttle position sensors, P1271 excessive difference between acceleator pedal position sensors, P1635 5v ref. A circuit) The first time w...

6 Replies Received (View Replies)

  Related Documents & Media  2002 Chevrolet Trailblazer LS

 
Message Closed w/Summary

car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S02
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsThrottle
OccursIntermittently

Trouble Codes

P1221TP Sensor 2 1-2 Correlation
P1271Accelerator Pedal Position Sensor 1-2 Correlation
P16355-Volt Reference 'A' Circuit Malfunction
Message Closed w/Summary

car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S02
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsThrottle
OccursIntermittently

Trouble Codes

P1221TP Sensor 2 1-2 Correlation
P1271Accelerator Pedal Position Sensor 1-2 Correlation
P16355-Volt Reference 'A' Circuit Malfunction