General Motors Powertrain Generator Fault Codes

49 documented General Motors Powertrain fault codes — causes, diagnosis and repair steps for each, drawn from OEM service literature.

Electrical

611 ECT VOLTAGE HIGH IAT VOLTAGE HIGH MAP VOLTAGE LOW

Emissions

Fuel

DTC 412 DTC 433 652 515 P0336 514-RTI 1 633 556-RTI 3 P0300 DTC 425

General

211 242 323 421 123 DTC 422 224 DTC 532 137 332 DTC 423 DTC 416 415 DTC 112 111 144 DTC 424 426 DTC 122 651 334 136 414 431 413 225 243 411 DTC 434 314 432

Lubrication

Starting

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Get a diagnosis walkthrough for any General Motors Powertrain fault on your specific unit — cited to the OEM manual, not a forum guess.