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Archive Tag: symptoms

ELECTRICAL CONNECTIONS OR LOW VOLTAGE: Both Can Create Intermittent Electrical Challenges

ELECTRICAL CONNECTIONS OR LOW VOLTAGE: Both Can Create Intermittent Electrical Challenges

June 27, 2022

Low voltage conditions or the integrity of an electrical connection can pose some challenging events for the technician attempting to make an accurate diagnosis. In the world of automotive diagnostics, electrical problems have proven to be the most challenging, especially intermittent problems. Intermittent performance problems can be affected by connection-relate conditions and the presence of […]

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Silencing Engine Sounds: It May Be Impossible with Today’s Technology

Silencing Engine Sounds: It May Be Impossible with Today’s Technology

January 4, 2022

It is not uncommon to receive customer complaints involving noises that may resemble noisy valve lifters or bearing clearance related noises. Other sounds may include piston slap during cold starts lasting for a couple of minutes in cold temperatures. Some of these noises are a normal characteristic for the engine with no means of silencing […]

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Low Oil Pressure Warning: A System Clean-Up May Be the Cure

Low Oil Pressure Warning: A System Clean-Up May Be the Cure

October 20, 2021

His quiet morning drive to work in his 2013 Silverado was interrupted by chimes and a Stop Engine Low Oil Pressure Warning. That can be a scary event, as major engine damage can result due to lack of lubrication. These symptoms have become a common occurrence for GM vehicles equipped with Active Fuel Management. When […]

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GM’s Active Fuel Management: Diagnosing Low Oil Pressure Symptoms

GM’s Active Fuel Management: Diagnosing Low Oil Pressure Symptoms

August 13, 2021

Symptoms of a low oil pressure condition have become a common complaint on GM vehicles equipped with active fuel management, sometimes referred to as displacement on demand. The symptoms may be the result of one of two malfunctioning pressure regulating valves or from a restriction in a filter screen positioned beneath the oil pressure sensor. […]

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Radio Frequency Signal Interference Leaves Muranos with No-Start Symptoms

Radio Frequency Signal Interference Leaves Muranos with No-Start Symptoms

August 20, 2020

Two ladies in like Nissan Muranos were chatting in a shopping center parking lot. After loading their groceries, both encountered a no-start condition. What are the chances of this occurring with two like vehicles parked next to each other? It is all about the strength of the signal and it is not uncommon to encounter […]

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BRAKES, TIRES AND WHEELS: Factory Solutions for Some Challenging Symptoms

BRAKES, TIRES AND WHEELS: Factory Solutions for Some Challenging Symptoms

July 29, 2020

Nothing can be more frustrating than spending countless hours trying to diagnose and resolve a customer’s complaint only to determine late in the diagnosis there was a factory bulletin available that would have quickly resolved the problem. In many cases, the material contained in the TSB, campaign or recall is the only solution, as the […]

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Throttle Related Symptoms When the Engine Lacks Throttle Response

Throttle Related Symptoms When the Engine Lacks Throttle Response

March 30, 2020

When the customer complaint is poor or no acceleration or the engine has lost power, where would you start with the diagnosis? Most would assume something major and expensive to repair. Following are some basic checks to consider before getting too deep into the diagnostics. MAXIMA LOSES POWER A complete service had been performed and […]

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A Diagnostic Challenge: The Symptoms May Be a Normal Characteristic

A Diagnostic Challenge: The Symptoms May Be a Normal Characteristic

April 25, 2018

Often we are faced with customer complaints that are seemingly impossible to resolve. We methodically make our best diagnostic efforts and implement the necessary repairs to alleviate the customer’s complaint. Sometimes, our best efforts fail to provide a solution and when this happens, it looks bad on the technician and the parts supplier.

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Brake and Suspension Solutions: For Some Difficult to Diagnose Symptoms

Brake and Suspension Solutions: For Some Difficult to Diagnose Symptoms

July 28, 2016

GM has identified a defect in certain 2015 Chevrolet Colorado and GMC Canyon vehicles whereby the front brake calipers on these vehicles can leak brake fluid. The condition is caused by tiny air pockets in the caliper castings that occurred during the casting process. If the casting contains a continuous string of air pockets that penetrate […]

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