How do you test a Chevy obd1?
To get the check engine codes to flash in your dash panel, use a jumper wire or a paper clip and connect terminals A and B of the diagnostic connector. Turn your ignition key on with engine off and the codes should start to blink. All codes should start with code 12 which is one long flash followed by 2 short flashes.
How does the GM OBD1 work?
The INNOVA GM Code Reader accesses the vehicle’s on-board computer to retrieve engine and electronic transmission codes and ABS vehicle computer codes. It connects to the vehicle’s computer self-test connector and shows the trouble through vehicle’s “check engine” light.
Can AutoZone read OBD1 codes?
We can help you get a reading yourself. Borrow an OBD reader to get a Check Engine Light reading with the AutoZone Free Fix Finder Service. It’s a simple task that takes less than two minutes.
Is there an OBD1 connector for a GMC?
If so, there is a big chance your car has an OBD1 connector (ALDL). This connector is unique and applies to Pontiac, Chevrolet, GMC, Oldsmobile, Cadillac, and Buick, and more. The positive thing with the OBD1 connector is you can read your trouble codes at home without any diagnostic tools.
How do you get OBD1 codes on a car?
Getting the obd1 codes need a couple of tools: a 4 inch long gage 16 jumper wire and a 12 volt test light. Both tools are hooked up to the diagnostic connector and when the ignition key is turned on (without starting engine) the codes will begin to flash in the test light, not in the dash panel.
How many pins does the OBD1 connector have?
OBD1 Connector Wirings Pinout The OBD1 connector has 12 pins, but not all of them are used in most car models. The standard pins like the ground, power, and a diagnostic pin are the same in most car models though.
Where is the ALDL connector on a GM car?
This system is unique to the GM manufactured cars which include: Buick, Cadillac, Chevy, GMC, Oldsmobile and Pontiac. To start diagnostic trouble code gathering locate the ALDL (assembly line data link) connector which is located on the driver’s side lower part of the dash on most cases.