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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

Tech Tip: Easy Fix for Mazda TPS Connection

Some Mazda B-2500 drivers may complain of a high idle in vehicles with a manual transmission. This may be caused by a poor electrical connection at the wire harness to the Throttle Position Sensor (TPS). A service kit (P/N 1F00-18-145) is available to resolve this concern. Correct the condition by following the steps in this Tech Tip. More

Tech Tip: Humming Sound From Front of Volkswagen Vehicles During Cornering

A customer states that a humming sound is coming from the front of the vehicle on turns in vehicles equipped with a 02J or 0A4 manual five-speed transmission. The hum may be more noticeable during slow speed turning maneuvers with the steering wheel almost to full travel. The hum diminishes when the steering wheel is straight. This hum may be generated by the differential spider gear contacting the... More

Tech Tip: Oil Leak From Bell Housing/Torque Converter on Hyundai Models

Some transaxles may experience an oil leak in the bellhousing behind the torque converter. If this occurs, the oil leak will be observed at the drain hole on the lower surface of the transaxle. More

Tech Tip: Solving Noise/Judder in Honda Pilot and Ridgeline Models

Honda Pilot or Ridgeline owners may complain about a noise and judder from the rear when turning. The cause and repair of the problem can be simple. The differential fluid may be contaminated by clutch wear, condensation or both. Contamination will cause the differential clutches to make noise and shake when turning. More

Leak Detection Tools & Equipment

Having the right tools to help you find leaks can save time and effort, and reduce the risk of comebacks. This special section features some common types of leaks and what kind of equipment you can use to find them, as well as a Leak Detection Product Showcase. More

Tech Tip: Humming Sound from Front of VW During Cornering

A customer states that a humming sound is coming from the front of the vehicle on turns in vehicles equipped with 02J or 0A4 manual five-speed transmission. The hum may be more noticeable during slow speed turning maneuvers with the steering wheel almost to full travel. The hum diminishes when the steering wheel is straight. More

Tech Tip: Acura with Idle Vibration/Harsh Shifting Issue

If a customer complains of a vibration at idle or harsh engagement when shifting the transmission between Park, Drive and Reverse, the probable cause is the front hydraulic engine mount may have deteriorated and torn. More

Servicing Hybrids: 10 Must Read Articles for Servicing Hybrid Vehicles from Ford, GM, Toyota, Honda and Nissan

Currently, there are about 1.2 million hybrid vehicles on the road. Within five years, hybrids are expected to account for 20 to 25% of all new car and light-truck sales. So sooner or later, you'll be working on these vehicles at your shop. These vehicles have the same service opportunities like brake pads, filters and suspension parts that need replacement. Also, battery packs, electric motors and... More