1999 GMC Suburban P1345 Distributor

1999 GMC Suburban P1345 Distributor

On the 1999 GMC Suburban, the P1345  is actually a very common problem on many GM trucks/SUVs with an 8-cylinder engine. The code is pointing to a fault withe Cam/Crank correlation. Most commonly here- the Distributor. There is a quick easy test for this. With the engine running, does the idle fluctuate? If not, shut the engine off and remove the distributor cap. Gently grab the rotor and try to rotate it left and right. I think you’ll find there is “play” when rotating it (there should be NO movement). This is a worn…

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2000 Ford F-150 P1504 IAC Valve

2000 Ford F-150 P1504 IAC Valve

On the 2000 Ford F-150, the P1504 is pointing to a problem in the Idle Air Control System. The IAC Valve is located on the top of the engine, mounted to the side of the throttle body. With the key on / engine off, take a voltage reading at the electrical connector. The voltage should be 10.5v or greater. If not, there is a problem in the circuit. Inspect the wire harness for any loose, broken of damaged wires. If the voltage checks ok, take an Ohms reading across the pins on…

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2007 Chevy Silverado Oil Consumption

2007 Chevy Silverado Oil Consumption

On the 2007 Chevy Silverado, the excessive oil consumption is actually a “known problem”. GM had issued a Technical Service Bulletin (# 10-06-01-008J) that states the most common reason for the high oil consumption is the Valve Cover and AFM Shield (and AFM Valve if necessary).  Piston Rings on this engine are not a common wear or fail item, at all. HOWEVER, after the Valve Cover and AFM Shield repair is made, according to the Technical Service Bulletin, “Re-evaluate the oil consumption. Document on the repair order. If the oil consumption…

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2001 Pontiac Trans Am Anti-Theft

2001 Pontiac Trans Am Anti-Theft

On the 2001 Pontiac Trans Am, when the vehicle will not start due to a “Security” light on the dash, SOMETIMES, if the problem lies in the reader internal of the ignition lock cylinder, you can reset the Security System with the 10-minute relearn procedure -Turn ON the ignition, with the engine OFF. -Start the engine (which shouldn’t start), then release the key but leave it on the “ON” position. -Watch the Security Light. After approximately 10 minutes, the Security Light will turn OFF. -Turn OFF the ignition, and wait 5…

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2006 Chevy Cobalt P0300 Cylinder Misfire

2006 Chevy Cobalt P0300 Cylinder Misfire

On the 2006 Chevy Cobalt, when the Check Engine light is “blinking” this is the universal sign for “P0300-Random Cylinder Misfire”. This means that one or more of the cylinder is not firing correctly. Unfortunately, there are many different causes of a random misfire. This can be; faulty or worn spark plugs, a faulty ignition coil, a faulty ignition control module, intake air leaks, etc… On this vehicle, due to the setup, a very common problem associated with this is a problem with the coils and/or control module. At this point,…

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2008 Cadillac STS P0008 Timing

2008 Cadillac STS P0008 Timing

On the 2008 Cadillac STS, the P0008 is “Engine Position System Performance Bank 1”. The engine control module (ECM) tests for a misalignment between both camshafts on one bank of the engine and the crankshaft. The misalignment would be at an idler sprocket for either bank or at the crankshaft. Once the ECM learns the position of both camshafts on one bank of the engine, the ECM compares the learned values to a reference value. The ECM will set this DTC if both learned values for one bank of the…

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2002 Chevy Prism P0446 EVAP Solenoid

2002 Chevy Prism P0446 EVAP Solenoid

On the 2002 Chevy Prism, the P0446 is pointing to a problem in the EVAP Vent System. If DTC P0446 is the only EVAP DTC set, the most likely cause is an inoperable EVAP pressure switching solenoid. This Solenoid is mounted to the EVAP Canister, located under the vehicle, towards the rear. Carefully inspect the rubber vapor hoses to/from the Solenoid for any cracks, holes or loose/missing connections. Inspect the electrical connector and wire harness for any loose, broken or damaged wires. Inspect the Canister for any dents, cracks or…

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2004 Kia Spectra P1401 EVAP Purge Solenoid

2004 Kia Spectra P1401 EVAP Purge Solenoid

On the 2004 Kia Spectra, the P1401 is pointing to a problem in the EVAP (emissions control/recovery) System. If the fuel cap has already been replaced, and you are sure the replacement cap meets Kia specs (those “universal” or “locking” fuel caps sold at after market parts stores do not meet OE specs, and will not seal the system correctly) then next thing to look at is the Fuel Filler Neck. Make sure there are no cracks or holes and that it is sealed tightly to the fuel tank. If…

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2000 Chevy Silverado P0440 EVAP

2000 Chevy Silverado P0440 EVAP

On the 2000 Chevy Silverado, the P0440 is pointing to a fault in the EVAP (emissions control/recovery) System. Unfortunately, it’s a fairly “general” code and there a few different things that can set this code. This can be a leak in the system, a problem with the EVAP Purge Solenoid, a problem in the EVAP Vent Solenoid, a problem with the Fuel Tank Pressure Sensor or a problem with the Canister itself. There will be some testing procedure that will need to be done to find the root of the problem….

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