2003 Ford F150 Theft Light Flashing

This 2003 Ford F150 came in with the complaint that the engine would not fire up and run. The starter worked, the theft light flashes quickly and the odometer reads all dashes instead of numbers. Scanning the PCM found that it would not communicate with the scan tool. There was a code U1262 ( missing … Continue reading “2003 Ford F150 Theft Light Flashing”

Changing the Crank Sensor ,Code P0335, On An H2 Hummer

In case you were ever wondering how to change a crank sensor on an H2 Hummer all I can say is you need to be about six feet tall and be able to get into the following positions.   Much shorter and you will not have the arm length needed. Much taller and I am … Continue reading “Changing the Crank Sensor ,Code P0335, On An H2 Hummer”

2007 Ford F150 Battery Light Stays On

This 2007 Ford F150 came in with the complaint that the battery light would come on about 30 seconds after the engine was started. The voltmeter in the dash indicated the alternator was charging. Checking the system with my charging system analyzer found the charging voltage was good at 14.23 volts and the amperage was … Continue reading “2007 Ford F150 Battery Light Stays On”

2004 Chevrolet Tahoe, Compressor Will Not Turn On

This 2004 Chevrolet Tahoe came in with the complaint that the a/c was not cold due to the compressor not coming on. Whenever the a/c was turned on the snowflake on the digital display would flash. This Tahoe has auto a/c controls. I checked codes with my Tech 2 scan tool and there was a … Continue reading “2004 Chevrolet Tahoe, Compressor Will Not Turn On”

2008 GMC Yukon, Reduced Power Mode, Code P0641 00 Stored

This 2008 GMC Yukon came in with the complaint of reduced power and the vehicle could not be driven over about 35 mph. There were a lot of codes stored but the only one of real relevance was Code P0641 Symptom 00, 5 volt reference circuit 1.  I looked at data under the TAC section … Continue reading “2008 GMC Yukon, Reduced Power Mode, Code P0641 00 Stored”

2010 Buick Enclave CXL, A/C Does Not Cool Well

This 2010 Buick Enclave CXL came in with the complaint that the a/c is not as cold as it should be during the heat of the day. The problem is that with the ambient temperature being 98° F and the heat index at 112°F the best the vent temperature would drop to was the mid … Continue reading “2010 Buick Enclave CXL, A/C Does Not Cool Well”

2007 Suzuki XL7, P0496 & Hard Restart After Fueling

This 2007 Suzuki XL7 came in with the SES light on and an odd complaint that the engine would not restart after refueling. The customer stated that she had learned that if she depressed the gas pedal about 25% to 50% the engine would fire up and run. That solution would suggest a problem with … Continue reading “2007 Suzuki XL7, P0496 & Hard Restart After Fueling”

2000 Cadillac DeVille, B1009 Anti Theft Warning Message and Security Light On

This 2000 Cadillac Deville came in with the complaint that the anti theft system lights and messages were on but the vehicle always cranked up just fine. Of course when the vehicle was dropped off at my shop all of the lights were out and everything was normal.   I did a code check and … Continue reading “2000 Cadillac DeVille, B1009 Anti Theft Warning Message and Security Light On”

2001 Lincoln Continental, Speedometer and Tach Inop

This 2001 Lincoln Continental came in with the complaint that the speedometer and the tachometer were not working. The mileage displayed dashes instead of digits. There were “Check Traction Control” and “Check Transmission”  fault messages. The “Service Engine Soon” light was on and codes P0500, P1502, P1744 and U1039 were stored in the PCM. That … Continue reading “2001 Lincoln Continental, Speedometer and Tach Inop”

1998 Cadillac Deville, Passenger Side Vents Hot with A/C On

This 1998 Cadillac Deville came in with the complaint that with the a/c on there was heat coming out of the passenger side vents. Codes B1340 and B1341 were present in the HVAC system. Both codes are for faults with the air mix door actuators. The B1340 is for air mix door #1 (driver’s side) … Continue reading “1998 Cadillac Deville, Passenger Side Vents Hot with A/C On”