Brake & Front End

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Tech Feature: Diagnosing Automotive Lab Scope Dilemmas

Although digital storage oscilloscopes or "lab scopes" have now become standard equipment for most modern automotive repair shops, they still possess a mystique that tends to intimidate many technicians. Right off the top, a lab scope is basically a voltmeter that displays voltage signals along a time base. The vertical scale measures the amplitude or amount of the voltage and the horizontal scale... More

Tech Feature: Jeep TJ Cylinder Block Casting Information

It was considered one of the best off-road engines ever made. The extreme low-end torque is ideal for trailing and rock crawling, but "no mas" for the 4.0L Jeep. 2006 was the end of U.S. application production. More

Directions: GM Leads the Industry in the Race for a Greener Refrigerant

The switch to HFO-1234yf is expected to help GM vehicles meet the overall requirements of the U.S. EPA's latest motor vehicle greenhouse gas regulations. More

Tech Feature: Solving the Riddle of the V10 Chrysler Cylinder Head

Although there aren't nearly as many of the Chrysler V10 engines out in the marketplace as the Ford Triton V10s, there are enough of them that you have probably seen them show up in your building at some point. Since the engine's life span was only 10 years and ended in 2003 they have now become "orphans" so to speak. Once that happens, you know for certain that someone is going to have to remanufacture... More

TECH TIP GM Drivetrain: Transfer Case Leaking Fluid

Fluid Leak at Left Hand Transfer Case Weep Hole or Between Transfer Case and Transmission (Replace Left Transfer Case Input Shaft Seal or Transfer Case O-Ring Seal). Models equipped with 6T45/70/75 Transmission RPO Codes MHC/MH4/MH6 for GM or AF33-5 AWD/PTU Automatic Transmission (RPO M45) for 2007-2008 Suzuki and Getrag 760 or 790 Power Takeoff Unit (Transfer Case). More

TECH TIP: GM Transmissions/Transfer Case: Slight Vehicle Movement in Park at Start Up

Some vehicles may rock or move slightly forward or rearward while in park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped. More

Alignment Specs: 1997-2004 Chevrolet Corvette

With different front and rear run-flat tire sizes, the 1997-2004 Corvette must be aligned every 20,000 miles or when the smallest amount of abnormal tire wear is present. If the customer does not have this service performed, even the slightest amount of extra toe, camber or caster can result in an expensive tire replacement bill. Performing an alignment on a C5 Corvette is actually easier than on... More

Brake Job: Ford Edge

The Ford Edge is an SUV based on a the CD3 platform. The brakes on these vehicles are straightforward and do not break any new ground. The brake systems on all variants have disc brakes at all corners. There are no major changes to the brakes system from 2007 to 2009. For the 2008 model year, ABS became a standard feature, as did a direct tire pressure monitoring system. The worst brake component to... More

Tech Tip: Fix for a Creaky Cadillac CTS Suspension

Some Cadillac 2003-2006 CTS owners may comment on a squeak or creak-type noise coming from the front of the vehicle. This noise typically occurs while braking or during slow turns, such as parking lot maneuvers. The cause of this noise may be due to a worn rear bushing on the front lower control arm rubbing against its outer rate washer. Installing a front lower control arm rear bushing spacer, as... More

TPMS Update: Chrysler Tire Pressure Monitor Systems

Chrysler uses a Schrader Electronics or VDO systems on just about every late-model vehicle. Chrysler never used a band sensor in any of its platforms. On some 2004 and 2005 models, Chrysler may have used two different TPMS systems on a vehicle platform depending on if the vehicle was equipped with AWD or if the system was optional or standard. More