Dexron IV Replaces Dexron III

Dexron IV Replaces Dexron III Bulletin #: 0337 Manufacturer: GM Vehicle: All Trans ID: All Trans Type: All April 2005, GM introduced a new transmission fluid, designed especially to meet the requirements of their new, 6-speed transmis- sions. Dexron IV meets or exceeds all of the requirements previously set for Dexron III. Here’s how it […]

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Chevy OBD1 codes

Here is a list of Chevy OBD1 codes, There were various other applications and some cars had different codes. But these usually get me on the right track. 12 No distributor reference pulse (diagnostic test active) 13 Oxygen sensor circuit open or no activity 14 Engine coolant temp sensor error (high temp indicated) 15 Engine […]

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P0446 Evaporative Emission Control System Vent Control Circuit Malfunction (notes)

P0446 – EVAP Vent Solenoid Valve Control System – The Evaporative Emission Control system stops fuel vapors from escaping from the fuel tank and fuel system. The EVAP system includes vent hoses and a canister containing charcoal for capturing, filtering and storing fuel vapors, and a valve for siphoning the fumes stored in this canister […]

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