A1A-GM Supported Parameters (PID’S)
1. INTAKE AIR- Intake Air Temperature
2. COOLANT TEMP- Engine Coolant Temperature
3. TRANS TEMP 1- Transmission Temperature for automatic gas vehicles
4. TRANS TEMP 2- Trans temp for some vehicles made from ’94-’97.
4. RPM- engine Revolutions Per Minute
5. MAF SENSOR LB/M- Mass Air Flow (lbs/min)
6. MAF FREQUENCY- raw Mass Air Flow sensor output (frequency)
7. MAF FREQUENCY 2- raw MAF sensor output for the Cobalt SS and Redline
8. MANIFOLD PSI- Manifold Air Pressure (psi)*
9. THROTTLE POS. PCT- Throttle Position percentage (0-100%)
10. THROTTLE VOLTS- Throttle Position sensor output (0-5 volts)
11. MILES PER HOUR- Miles Per Hour
12. KNOCK RETARD- Knock Retard (degrees) for most GM vehicles
13. KNOCK RETARD 2- used for KR value of ’94-’97 LT1’s and some 96/97 V8’s.
14. KNOCK RETARD 3- used for knock retard value of the Cobalt SS SC and Redline
15. IGNITION ADVANCE- ignition timing advance
16. PULSE WIDTH- injector #1 pulse width (4&6 cylinder engines)
17. SHORT TRIM B1-short term fuel trim bank#1
18. SHORT TRIM B2-short term fuel trim bank#2
19. LONG TRIM B1-long term fuel trim bank#1
20. LONG TRIM B2-long term fuel trim bank#2
21. OXYGEN SENSOR B1-O2 bank 1 sensor in millivolts
22. OXYGEN SENSOR B2-O2 bank 2 sensor in millivolts
23. RUN TIME MINS- engine run time is tenths of seconds since last engine start
24. BATTERY VOLTAGE- Alternator/battery output voltage
25. IAC POSITION- Idle Air Control counts (position of Idle Air Control valve)
26. PULSE WIDTH B1-injector Pulse Width for bank 1 (8 cylinder engines)
27. PULSE WIDTH B2-injector Pulse Width for bank 2 (8 cylinder engines)
28. ENGINE LOAD-calculated Engine Load (0-100%)
29. ENGINE OIL PRESSURE (some 8 cylinder engines)
30. INTAKE AIR 2 – Intake Air Temp. downstream of intercooler (some supercharged
applications such as the Cobalt SS, Ion Redline).
31. TRANS TEMP AL- Allison transmission temp, Duramax and Workhorse
32. TORQUE CONVERTER SLIP AL- Allison transmission converter slip, Dmax and WH
33. TQ TO TRANS AL- Engine torque delivered to trans, Duramax and Workhorse
34. INJECTOR RAIL PRESSURE DESIRED DM- Duramax
35. INJECTOR RAIL PRESSURE ACTUAL DM- Duramax
36. FUEL LEVEL DM- Duramax
37. INJECTOR FLOW RATE DM- Duramax
38. Miles Per Gallon 1- instantaneous fuel economy for gas vehicles
39. Miles Per Gallon 2- instantaneous fuel economy for diesel vehicles
40. HP 1- Calculated net horsepower for gasoline vehicles
41. HP 2- Calculated net horsepower for diesel vehicles
42. Analog 1 – analog input #1.
43. Analog 2 – analog input #2
44. TOTAL MISFIRES- Total misfires of all cylinders. Resets every minute.
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