Does anyone know what these trouble codes mean?

Module 1: C12
Module 4: H32
Module 9: H64 pretty sure this is the throttle position sensor?

Thanks a lot!

Brad

 

Module "1" is the CCM module.

Module "4" is the PCM module (Powertrain Control Module) because automatic transmission computer control was added to Engine Control Module in 1994.

Module 9 is the ABS/ASR module

C12 indicates no CCM codes
DTC H32 in Module 4 indicates a past ( H=History) EGR fault
DTC H64 in Module 9 indicates a past TPS fault as it relates to ASR/ ABS A system ; not engine

Read
http://www.corvette-guru.com/uploads...CMCodePull.pdf

Clear the codes and see if any come back up.

1. With ignition "off" ground terminal #12 of the DLC (use bent paper clip to connect pin 4 to pin 12)
2. Turn ignition "on".
3. Press trip/odo button on the DIC until 1.7 appears in the trip
monitor area of the instrument cluster.
4. Press eng/met button on the DIC & hold until "---" appears in the speedometer area of the cluster, this will clear CCM DTC'S.

To clear PCM/ECM codes do the following:
1. Press the trip reset button on the DIC until the desired system is displayed. In this case it will be 4.0.
2. Press trip/odo button on the DIC until the desired diagnostic mode(4.7) is displayed on the trip monitor area of the cluster.
3. Press & hold the eng/met button on the DIC until "---" is
displayed in the speedometer area of the cluster, this will clear PCM codes.

To clear ABS/ASR codes do the following:
Same as above but you’re looking for “9.7” on the trip odo