168
Step
Action
Value(s)
Yes
No
7
Check pressure drop
Check manifold vacuum supply to regulator
Is the pressure within specifications?
Replace the
regulator. Go
to Step (8)
Verify the fil-
ter is OK. Go
to Step (8).
8
Remove all test equipment except the moni-
tor.
Using the monitor, reset the adaptive learn.
Connect any disconnected components, fus-
es, etc.
Using the monitor, clear DTC information
from the ECM.
Turn the ignition OFF and wait 30 seconds.
Start the engine and operate the vehicle to
full operating temperature.
Observe the MIL.
Observe engine performance and driveabili-
ty.
After operating the engine within the test pa-
rameters of code, check for any stored
codes.
Does the engine operate normally with no stored
codes?
System OK.
Go to On-
Board
Diagnostics
System
Check/
Malfunction
Indicator
lamp.
Summary of Contents for 3.0L GM
Page 4: ...4 ...
Page 5: ...5 General Information ...
Page 9: ...9 Maintenance ...
Page 16: ...16 ...
Page 17: ...17 LPG Fuel System ...
Page 18: ...18 LPG FUEL SYSTEM OPERATION ...
Page 25: ...25 LPG Closed Loop Schematic ...
Page 26: ...26 ...
Page 27: ...27 LPG System Diagnosis ...
Page 35: ...35 Fuel Symptom Diagnostics ...
Page 51: ...51 Electrical Section ...
Page 52: ...52 ...
Page 53: ...53 DST Diagnostic Scan Tool ...
Page 59: ...59 Select the USB button then click the OK box Click on the Search attached device box ...
Page 67: ...67 When connected the live data stream appears in the Value column ...
Page 78: ...78 ...
Page 80: ...80 ...
Page 81: ...81 Engine Wire Schematic ...
Page 82: ...82 2011 3 0L GM Engine IMPCO Emission Certified LPG Fuel System ...
Page 83: ...83 ...
Page 84: ...84 ...
Page 85: ...85 Engine Wire Harness Repair ...
Page 89: ...89 Diagnostic Trouble Codes DTCs ...
Page 93: ...93 ...
Page 101: ...101 ...
Page 105: ...105 ...
Page 109: ...109 ...
Page 119: ...119 ...
Page 129: ...129 ...
Page 133: ...133 ...
Page 137: ...137 ...
Page 141: ...141 ...
Page 145: ...145 ...
Page 161: ...161 ...
Page 165: ...165 ...
Page 169: ...169 ...
Page 173: ...173 ...
Page 201: ...201 ...
Page 209: ...209 ...
Page 213: ...213 ...
Page 217: ...217 ...
Page 221: ...221 ...
Page 225: ...225 ...
Page 229: ...229 ...
Page 237: ...237 Servicing the Fuel System ...
Page 254: ...254 ...
Page 255: ...255 LPG Parts Diagram ...
Page 256: ...256 THROTTLE BODY ASSEMBLY ...
Page 258: ...258 FUEL RAIL INJECTORS ...
Page 260: ...260 REGULATOR ASSEMBLY ...
Page 262: ...262 HOSE ASSEMBLIES COOLANT VACUUM FUEL ...
Page 264: ...264 THERMOSTAT HOUSING ...
Page 266: ...266 ENGINE CONTROL MODULE ...
Page 267: ...267 ENGINE CONTROL MODULE Item Description Qty IMPCO Part Number 1 ECM Liugong 1 A11 173 ...
Page 268: ...268 SENSORS 4 1 3 6 5 2 7 ...
Page 270: ...270 DISTRIBUTOR ...
Page 272: ...272 FUSE BOX BRACKET ...
Page 274: ...274 IGNITION COIL ...
Page 275: ...275 IGNITION COIL Item Description Qty Part Number 1 Coil Ignition 1 7245530 ...
Page 276: ...276 MANIFOLDS ...
Page 278: ...278 WIRE HARNESS FUSES FUSE BOX COVER Fuse Box Layout 4 ...
Page 280: ...280 PCV VENT VALVE ...
Page 282: ...282 MISCELLANEOUS ENGINE ...
Page 284: ...284 ALTERNATOR ...
Page 286: ...286 STARTER ...
Page 291: ...291 ...
Page 292: ...292 3 0L UPPER ...
Page 294: ...294 3 0L LOWER ...
Page 298: ...298 ...
Page 299: ...299 Labor Time Guide ...
Page 317: ...317 Definitions ...
Page 322: ...322 ...
Page 323: ...323 Appendix ...
Page 327: ...327 DTC SPN FMI Chart ...