Tech Tips

GM Security Systems

If you’ve worked on any GM vehicles over the past 20 years, most likely you have encountered one of their security systems. Passkey, one of GM’s most popular earlier systems, used a pellet in the steel shank of the key…

Ford Hybrid A/C

Face it. Working on hybrid vehicles can make some technicians nervous. Even though the systems on a hybrid may be used somewhat differently, they are not new and most technicians will have…

Intermittent Dodge Ram 1500

I received a call on a 2003 Dodge Ram 1500 with an intermittent P0339 code for crankshaft position (CKP) sensor signal. Talking with the technician, I found out another shop had replaced the engine. The customer said it had never…

Chrysler ZF 8HP Service Slants

A different kind of transmission requires a different type of service. If you are used to working on high-end import vehicles such as BMW, Audi, Bentley, Jaguar or Rolls-Royce, you’ve no doubt come across a version of the ZF Friedrichshafen…

My 5.2 Diesel Does Not Start

A common complaint on the 5.2 Diesel is: “After sitting overnight, the engine does not start unless I pump the primer or spray some WD-40 at it.” While a number of issues can be present, one of the more common…

No Crank Without Brake Switch

Starting in 2007 with the Altima, Nissan incorporated an Intelligent Key system with a push button ignition switch. The Intelligent Key (key fob) just needs to be near or inside the vehicle for the doors to unlock (by depressing a…