DTCs

[young_gun]

ok so i ran a DTC check and came up with these codes:
27-accelerator pedal position sensor
32-EGR circuit fault
33-EGR control sensor circuit

i cleared the codes, and when the SES came on again i checked them once again. This time only the 33 code showed up. Any ideas on how I'd go about fixing this as I don't know a whole lot about the EGR system. Thanks.

[Chevylover]

ok so i ran a DTC check and came up with these codes:
27-accelerator pedal position sensor
32-EGR circuit fault
33-EGR control sensor circuit

i cleared the codes, and when the SES came on again i checked them once again. This time only the 33 code showed up. Any ideas on how I'd go about fixing this as I don't know a whole lot about the EGR system. Thanks.



Perhaps the DTC 32 and DTC 27 are following faults of the DTC 33.
You should check the EGR Valve on top of the upper plenum/intake if it is stuck or if any of the vacuum lines to the valve or the solenoids on the driver side are stuck, defective. Sometime the solenoid itself is the fault.

Cu,
Sven