This flashing light should not be ignored. P1164 ho2s bank 2 sensor 3 rich or high voltage read our article on oxygen sensor codes for help with this gmc check engine light code.

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P1170 bank to bank fuel trim offset.

Gmc check engine light. Turn the ignition to the ii position the on position but do not try to crank the engine. When your engine is misfiring it is dumping raw fuel into the exhaust. Check engine light click for more.

Stability control indicator click for more. Most of the time that serious problem is a misfire. Stability control off indicator click for more.

Forward alert indicator click for more. Locate the open obd port to the left of the fuse panel in the driver s side foot well. Plug the obd scan tool into the open port.

It is not recommended to drive if the check engine light is flashing. With a check engine light on you need to find out what caused it. Tire pressure monitor indicator click for more.

If your vehicle s oxygen sensor is faulty it may trigger the check engine to come on. A diagnostic test can determine if the spark plugs are the reason the check engine warning light has come on. P1165 ho2s cross counts bank 2 sensor 2 read our article on oxygen sensor codes for help with this gmc trouble code.

Traction control indicator click for more. Our cardinale gmc service technicians can replace your spark plugs and reset your vehicle s computer. Press erase on the scan tool to erase all computer codes and reset the check engine light.

A check engine light going on and off intermittently signals an engine misfire causing damage to the catalytic converter and other engine components. Anti lock brake system fault indicator click for more. A flashing check engine light is your gmc sierra s way of saying i have a serious problem don t ignore me.

What to do when the gmc check engine light comes on.

Turn the ignition to the ii position the on position but do not try to crank the engine. Plug the scanner into the obd ii port.

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All codes are displayed 3 times each then a code 12 will repeat.

Gmc check engine light codes. Once the lights on the dash come on turn off all the vehicle s accessories like the radio. Then press the read button on the scanner to access the check engine light code. After code 12 is displayed any stored trouble codes will be displayed by flashing the check engine service engine soon or malfunction indicator lamp light.

Here is the list of dtc s. Press erase on the scan tool to erase all computer codes and reset the check engine light. P1580 cruise move circuit low voltage read our article on automotive circuit testing for help with this gmc check engine light code.

P1579 p n to d r at high throttle angle. In this mode the computer will display a code 12 three consecutive times by flashing the check engine service engine soon or malfunction indicator lamp or light. P1578 bbv sensor circuit low vacuum.

Diagnostic trouble codes. Thankfully the light can come on for a variety of reasons and not all of them involve the imminent collapse of. If your gmc vehicle sets off a fault code also known as a check engine code resetting the code after the repair has been made is a simple process.

Locate the open obd port to the left of the fuse panel in the driver s side foot well. Locate the obd ii port under the dashboard. You can t afford a big repair bill or worse being without your car for an extended period.

The letter p indicates powertrain related codes such as those involving the engine or the transmission and their sensors. Plug the obd scan tool into the open port. First digit structure is as follows.

Typically p codes are the only ones that will illuminate the check engine light. This is a huge file 48 pages so it s probably easiest to use your scroll function to locate the code you re looking for. You fear the worst.

To find out why your gmc check engine light is on read the fault codes with an obd ii scanner. Turn on the ignition but do not start the engine. The code will be a series of letters and numbers.

Pxxxx for powertrain bxxxx for body cxxxx for chassis uxxxx for future systems. Once you locate the battery the method for clearing the code is the same regardless of the year make or model of gmc vehicle. The letter b indicates a body code which means that it relates to a body system such as the airbags.

The dreaded check engine light on your dash is illuminated and taunting you. Put your key in the ignition and switch the vehicle to on do not start the vehicle. A code 12 consists of one flash a short pause then two flashes in rapid succession.

The p0000 to p1000 are all eobd codes. Allow the obd ii scanner to turn on and press enter to connect with the vehicle. P1577 bbv sensor circuit low voltage read our article on automotive circuit testing for help with this gmc check engine light code.