GM Tech Tip: Inspect and Ensure the Integrity of Wiring Harness Connectors
The first step in any type of electrical diagnosis is a visual and physical inspection of the wiring harness connectors for integrity. Many times, the vehicle may be repaired just by disconnecting and reconnecting the connectors. As with all repairs to wiring harness connectors and terminals, a pull test of the terminals within the connector should be performed. A pull test is performed by ….
Tech Tip: What’s New in TPMS?
The increasingly hot topic of Tire Pressure Monitoring Systems (TPMS) is very controversial yet compelling. TPMS brings about confusion and aggravation, but more importantly, opportunity. Adding to the TPMS frenzy is loads of information. This article will discuss a couple of new issues within TPMS that you need to be aware of ….
Tech Tip: Solving Intermittent MIL Illumination on Jeep Grand Cherokees
Some Jeep Grand Cherokee owners may complain of an intermittent MIL illumination. If you retrieve DTC P1499 – Hydraulic Fan Solenoid Circuit while diagnosing the problem, this Tech Tip describes how to complete the repair by replacing just the solenoid, not the complete cooling fan module ….
Tech Tip: Adding a Fluid Flush Can Boost a Shop’s Average Repair Order
Many shops are recovering revenues lost to a shrinking repair market by "upselling" fluid maintenance services or, as they’re commonly called in the aftermarket, "fluid flushes." In other words, adding a fluid flush to a money-losing routine oil change can boost a shop’s average repair order amount into the range needed for true profitability ….
Tech Feature: Has Your Battery Life Lost its Charge? Tips to Get Back that Spark
The condition of the battery as well as its state of charge are critical in late-model vehicles not only for reliable cranking and starting, but also for the onboard electronics. Low battery voltage can cause control modules to misbehave, or in some cases to go into a sleep mode and shut down. A dead battery is even worse because extremely low voltage or no voltage can cause some modules to forget learned data, adaptive adjustments or even programmed settings in their Keep Alive Memory chips. This, in turn, may ….
TPMS Update, Don’t Forget the Changer!
And What You Can Charge!
The Ins and Outs of Indirect and Direct TPMS
This is the year of the TPMS (Tire Pressure Monitor System). It’s been coming for some time. In response to a rash of highly publicized rollover accidents caused by tire failures on SUVs, Congress passed a law called the TREAD Act in 2000 which required all vehicle manufacturers to have TPMS on all their cars
Has Your Battery Life Lost Its Charge? Tips to Get Back That Spark
The condition of the battery as well as its state of charge are critical in late-model vehicles not only for reliable cranking and starting, but also for the onboard electronics. Low battery voltage can cause control modules to misbehave, or in some cases to go into a sleep mode and shut down. A dead battery
Tech Update: Top 5 TPMS Questions
From professional and college football down to youth-league soccer, everyone (including TechShop!) has a “Top Something-or-other” list. Why should the tire industry be different? Over the last year or so, Tire Rack has been conducting an informal and unscientific survey of its customers regarding the reoccurrence of issues dealing with tire pressure monitoring systems. Thanks
Evolving Ignition Control Systems
Require Knowledge of Crankshaft & Camshaft Sensor Function
Diagnostic Dilemmas: Taking Charge of Vehicle Voltage Testing
Although checking charging voltage at the battery terminals is the most popular method for testing an alternator, a charging voltage test seldom reveals less common problems like open or shorted alternator diodes, intermittent high or low charging rates, charging system wiring problems, intermittent cranking/no-start complaints or intermittent dead battery complaints. In addition, testing charging voltage
Tire Changer Q & A
Tire Changer Q & A We talk to Pete Liebetreu of Hunter Engineering on Tire Changers This month we talk to Pete Liebetreu, tire changer product manager of Hunter Engineering, on the future of the market and how shops can get the most out of this vital piece of equipment for most undercar shops. BRAKE