GM Transmission Tech Tip: Low Line Pressure
After installing service pump cover, a transmission may have low line pressure.
Tips For Investing In A New Tire Changer
An extremely busy tire shop that mounts 500 to 1,000 tires per month may get only a few years out of a tire changer.
TPMS Diagnostic, Replacement Tips
Using new TPMS tools, you can have several options to replace and reprogram a sensor.
Voltage Drop Testing Is The One Meter Test That Doesn’t Lie
The measurement of voltage is like the speed of highway traffic – when loads are light, the voltage does not drop.
Driveline Tech Tip: Clunk Or Knock
Some vehicles with rear-wheel drive and may exhibit a driveline clunk or bump that occurs as the vehicle starts to move forward following a stop. This condition may be caused by the slip yoke not sliding smoothly on the output shaft splines. Action: Lubricate the slip yoke with a PTFE lubricant or a lubricant specified
Navigating Wiring Diagrams To Test Circuits
Wiring diagrams and the correct probes are ways technicians can avoid scarring a vehicle for life.
Fuel Pump Diagnostics: Using Scan Tools
The most common diagnostic procedures for fuel pumps in the past were analog and hands on. Most fuel pump-related problems could be solved with a pressure gauge and voltmeter. Today, the scan tool is the most important tool when diagnosing a fuel supply problem.
OBDII Port Diagnostics
The OBDII connector is more than 20 years old. 1996 was the first year all vehicles sold in the U.S. had to have this standard 16-pin connector. Most technicians now take this port for granted, and some do not even remember the days when a scan tool was more about the cables and ID cards than the tool itself.
Reflash Confusion And Car Software Updates
According to J.D. Power, 189 recalls and more than 800 TSBs have been issued concerning reflashing or reprogramming over the past five years. These numbers do not include the random updates that seem to appear out of thin air on the OE service information websites. Some of us may see this as a problem. But, we should see this as an opportunity.
Power Window Regulator Diagnostics
Before you start pulling a door panel on a vehicle to replace a window regulator, you might want to start looking at the repair information first. Most power windows are more than just an electric motor and switch that changes polarity.
Serial Data Bus Diagnostics
Serial data buses help eliminate multiple sensors and wiring. One sensor can share information with multiple modules without having to connect directly to the multiple modules. Serial data buses may seem like a daunting concept to some technicians, but understanding them is now a required skill to work on most modern vehicles.
Diagnostic Dilemma: The Case of the Missing Code
When doing mobile diagnostic work, no-code stalling complaints are a major part of your agenda. In most cases, the client shop is simply too busy to duplicate the failure or, in some cases, a long test drive will yield nothing in the way of useful scan tool data. With many no-code stalls, all you’re going
