This 2005 GMC Sierra came in with the complaint that when the vehicle is started cold, the headlights, dash lights and dome light will flicker or pulsate. As the system runs the problem diminishes but never goes fully away. This is a common complaint on many Cadillac, Chevrolet and GMC full sized trucks and suv’s. … Continue reading “2005 GMC Sierra, Lights Flicker or Pulsate”
This 2003 Chevrolet Silverado happens to be my personal vehicle and today I decided to test the battery as cool weather is upon us in South Carolina. The battery failed a load test as expected. I have heard the cranking sound slightly off key for the past few weeks. Yes, I can detect/hear a weak … Continue reading “2003 Chevrolet Silverado, Changing The Battery”
This 2002 Chevrolet Suburban came in with the battery light on and the system voltage at 12 volts. In talking with the customer, I found out that the battery light had been coming on and going off for a bout a week. Yesterday the battery went dead while driving. I was pretty sure just from … Continue reading “2002 Chevrolet Suburban, Changing The Alternator”
This alternator was removed from a 2002 Chevrolet Suburban. To replace the brushes in this alternator the rear plastic cover first has to be removed. There are several slots around the exterior surface of the black plastic cover. Using a small screwdriver inserted into the slot, pry out on the lower end to release the … Continue reading “Replacing Worn Brushes In A Delphi Alternator”
This 2006 GMC Yukon came in with the Service Engine Soon (SES) light on and a code P0449 stored in the PCM memory. This test should be done on the vehicle but I could not figure a way to o the test and position everything for a good picture. So you will just have to … Continue reading “2006 GMC Yukon, P0449”
This 2008 Chevrolet Silverado came in with the complaint that the driver’s power door lock does not work. I had already repaired the problem with the driver’s door lock switch not working at all. to see that repair please click here. Since the switch was now working properly, the next step was to check the … Continue reading “2008 Chevrolet Silverado, Driver’s Power Door Lock Does Not Work Part Two”
This 2008 Chevrolet Silverado came in with the complaint that the driver’s power door lock switch would not work the door locks. The passenger side switch works but only the lock on the passenger side door. I needed to check signals at the power door lock switch on the driver’s door but some dis assembly … Continue reading “2008 Chevrolet Silverado, Driver’s Power Door Lock Switch Does Not Work”
This 2004 Chevrolet Silverado came in with the complaint that the air only blows through the defrost and will not blow out of any other location. There were codes B0263 and B3770 stored in the HVAC module. The codes refer to mode actuator faults. To access the actuator, the driver’s side heater floor vent extension … Continue reading “2004 Chevrolet Silverado, Changing The Mode Actuator”
This 2003 Chevrolet Silverado came in with the complaint that the blower did not work on any speed. The ABS and Brake lights were on as well. Testing begins at the HVAC fuses in the driver’s side fuse box that is located behind the dash end cap. The fuses need to be checked with the … Continue reading “2003 Chevrolet Silverado, Blower Does Not Work On Any Speed”
This 2005 GMC Sierra came in with a poor run condition and multiple misfire codes stored. Code P0304 was one of the misfire codes stored. While looking at data I noted that misfires on cylinder #4 were markedly higher that most of the other cylinders. Normally when confronted with high misfire counts on this engine … Continue reading “2005 GMC Sierra, Multiple Misfires”