2007 Yukon Denali Intermittent Crank No Start

[rdezs]

This would be a good scenario to be able to watch live data when the idle starts slowing down and it dies. Pretty much all the bidirectional scanners out through these days have that ability. (As well as reading trouble codes and clearing them of course) Cheaper in the long run than to keep throwing parts at it. You can select several parameters for it to display and track.... Drive around with it plugged into the OBD2 port..... Either look at it when the symptoms show up or replay the live data afterwards. It should point you exactly to the component that's causing the issue.

 

[Maxpower_454]

This would be a good scenario to be able to watch live data when the idle starts slowing down and it dies. Pretty much all the bidirectional scanners out through these days have that ability. (As well as reading trouble codes and clearing them of course) Cheaper in the long run than to keep throwing parts at it. You can select several parameters for it to display and track.... Drive around with it plugged into the OBD2 port..... Either look at it when the symptoms show up or replay the live data afterwards. It should point you exactly to the component that's causing the issue.

Whats the most common scanner that has that capability? Where do I start?

 

[rdezs]

Just look on Amazon for bidirectional scanners, and read the description to make sure it has live data capability. Autel make some pretty popular ones. Generally, the more you pay the more features it has. Doing a crankshaft or Cam relearn is a good one, as well as the ABS bleeding and being able to send commands to different modules to test them. There are some inexpensive ones on the market now that do all that and more. It pays the shop around and look at the features and make sure you read the reviews. It's hard to beat a Tech 2, the actual tool GM uses for diagnostics... but finding a genuine one tends to be rather expensive. There are Chinese clones out there that seem to work fairly well. Any of the above are really a necessity these days. They usually pay for themselves the first one or two times you use it.... When you look at what the dealer or shops charge for a simple diagnostic.