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Automotive Technical Discussion Forum

Professional automotive forum for all types of vehicle repair discussion that does not fit into one of our more specific technical forums. Discussions include both OBD and OBD2, engine performance analysis, diagnostic best practices, service information, vehicle standards such as J1962, J1939, J2534, OBD2 modes (e.g. MODE$06), ignition and fuel system analysis, alternative propulsion (e.g. hybrid, electric, natural gas), and more. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Technical Theory Forum.

Recent Automotive Discussions in the Automotive Technical Discussion Forum

engine miss and stabil trac service required
11/19/2017 in the Technical Discussion Forum
[Driveability: 09 GMC Sierra 1500 SLE 5.3L] Ok I have a good one here. regular customer for about 5 years we have serviced this truck regularly. for the last 3 years it comes in with a miss change the plugs a/c delco and runs great for about 10 months t...
OLD IS GOLD
11/19/2017 in the Technical Discussion Forum
Here is a proper Oscilloscope tutorial... scopes had came a long way after this post but theories are still valid... Do you know this gentlemen who wrote this..i wonder what he is doing now with modern scope.. Thanks..
GM AFM Lifter Issues & Programming
11/18/2017 in the Technical Discussion Forum
2007-2013 GM 5.3 and 6.0 AFM (Active Fuel Management) engines. As I'm sure many of you have seen quite a few of these vehicles in your shop so have we. We on average get one of theses in the shop every 2 months; however, recently it has been more often. I...
1993 Chevrolet K1500 Neutral Safety Switch
11/17/2017 in the Technical Discussion Forum
What do these trucks use as a neutral safety switch? All I am finding on the lower steering column is a switch with a 2 wire plug for the back up lights. There isn\'t anything on the side of the transmission. Would the system just rely on the mechani...
Infotainment display screen
11/17/2017 in the Technical Discussion Forum
[Electrical: 17 Chevrolet Trax Premier 1.4L] Now that I am Retired. The Wife Got a new 2017 Chevy Trax. Unfortunately the Infotainment Display Screen is blank or pixilated when cold. Works fine when warmed up. The dealer has tried twice to fix the probl...

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