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General Motors OBD-II Trouble Codes. The OBD-II DTC codes here generally apply to all OBD-II GM vehicles from 1996 and newer: GMC, Chevrolet, Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn. There may be slight changes depending on the year/model of vehicle, you would need to consult a factory service manual for specifics.
GM OBD Trouble Codes. Note: See this page for generic OBD-II codes (they start with P0XXX). See also: Chevy Check Engine Light @ Check-Engine-Light.com and Chevrolet OBD-II Codes section. Introduction. GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation).
OBD-II OBD2 Diagnostic Trouble Codes. Definitions and suggested repair procedures
GM U Network OBD Trouble Codes. Note: See this page for generic OBD codes (they start with P0XXX). Go back to the GM OBD Codes main page. DTC U1000 Class 2 Communication Malfunction DTC. U1001-U1254 Loss of XXX Communications DTC. U1002 Loss of serial communications for class 2 devices DTC. U1003 Loss of serial communications for class 2 ...
2001 Dodge Grand Caravan - Codes 1684, P0442 & P0455. 2001 Dodge Grand Caravan, 3.3L V6 with aprox 97K miles, check engine light is on again for the fourth time in less than 2 months. The first time the codes were 1684 & P0456, we changed the gas cap to a new one and had the codes reset.
How to easily diagnose, repair, and info on causes of a P069E trouble code that indicates a detected failure in the fuel pump Control module so that it requested MIL illumination.
The generic OBD trouble code U0100 is a serious situation where the signals between the electronic control module (ECM) or the powertrain control module (PCM) and a particular module have been lost. There could also be a problem with the CAN bus wiring disrupting communications.
General Motors "B" Body OBD-II Diagnostic Trouble Codes The OBD-II "B" body-related diagnostic codes here generally apply to all OBD-II GM vehicles from 1996 and newer: GMC, Chevrolet, Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn .
GM General Motors OBD-II Driving Cycle. Note: See this page for generic OBD codes (they start with P0XXX). Go back to the GM OBD Codes main page. A complete driving cycle will perform diagnostics on all monitored systems and can usually be completed in less than fifteen minutes. Performing a GM OBD-II Driving cycle:
If any repairs were made, clear the diagnostic trouble codes from memory, and see if the U0164 code returns or if you are able to communicate with the HVACCM module. If the code does not return or communication is re-established, then the fuses/connections were most likely your problem.