Question about 1995 Pontiac Bonneville

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Location of aldl conetection is - 1995 Pontiac Bonneville

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Under the left hand side of the dash. One little hint though, if you absolutely cannot find it, remove the under dash panel and look up in there. I've seen it many times where Bozo the Clown has performed a service where the aldl needed to be removed from it's bracket and moved out of the way, and old Bozo doesn't reattach it, and just shoves it under the panel. Good luck!

Posted on Feb 11, 2012


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Clean off the crankshaft pulley at the front of the engine and put some paint on the timing marks. Start the car and turn off any accessories such as climate control, lights and the radio. Start the engine until it warms up.

Connect the timing light to the battery and then to the number one ignition wire. Locate the assembly line diagnostic link also called an ALDL and use a jump wire to connect the diagnostic terminal "B" to the ground terminal marked "A". The ALDL is located under the left side of the instrument panel. Not all models of the GMC Sierra have an ALDL.

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