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2001 Cadillac DTS wont start or turn over - Cadillac Cars & Trucks

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  • Cadillac Master
  • 12,506 Answers

Turning ignition switch to start position ! Nothing happens , no click , nothing ?
Circuit Description
Moving the ignition switch to the CRANK position sends a 12 V signal to the PCM Ignition Crank Sense. The PCM verifies that the transmission is in the PARK or NEUTRAL position. The PCM then grounds the control circuit of the START relay. When the START relay is energized it allows voltage to the starter solenoid S terminal.

Starter Solenoid Does Not Click

2
Turn the ignition to the START position.
Does the engine crank?
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO - Go to Step 3
3
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With a scan tool, observe the Crank Request Signal parameter in the PCM data list.
Turn the ignition to the START position.
Does the scan tool display Yes?
YES - Go to Step 5
NO - Go to Step 4
4
Turn ON the ignition, with the engine OFF.
With a scan tool, observe the Crank Request Signal parameter in the PCM data list.
Turn the ignition to the START position.
Does the scan tool display Yes?
YES - Go to Step 11
NO - Go to Range Selector Displays Incorrect Range in Automatic Transaxle - 4T80- E
5
Turn OFF the ignition.
Disconnect the Starter relay.
Turn ON the ignition, with the engine OFF.
Connect a test lamp between the battery positive voltage of the Starter relay coil circuit and a good ground.
Does the test lamp illuminate?
YES - Go to Step 6
NO - Go to Step 19

This is troubleshooting info from GM factory service testing and repair manual .A scan tool isn't necessary , you could use a test light if you knew which pins at the PCM . For example , testing Crank Request Signal parameter in the PCM data list. Find this wire circuit at the PCM , with a test light .When turning the key to start position ,does the test light light ? A factory scan tool just cuts down the time of diagnoses . A wiring diagram is a must for diagnosing this . Free wiring diagrams can be found at
http://www.bbbind.com/free_tsb.html There are videos on youtube on basic automotive electrical trouble shooting , Control module diagnostics . That is if you don't know how to already .

Posted on Jan 01, 2017

  • John Garcia
    John Garcia Jan 01, 2017

    Jeff thank you for your help Im yet to go out and mess with my car because I'm frustrated with it but again thank you for your help and support and I will try your tips later today again thank you.

  • Jeff Armer Jan 01, 2017

    Your welcome ! let me know how you make out or what you find .

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SOURCE: Keyless remote reprogramming

this has to be reprogrammed at a dealership because they are the only ones that have a computer to do it

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SOURCE: 2008 Cadillac DTS navigation manual

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SOURCE: 2001 cadillac dts

easiest way to reset everything and clear codes is to remove the battery terminal wait 30 seconds and hook battery up its computer is just like a pc remove and reinstall power resets it, ggod luck please rate this post thanks

Posted on Apr 07, 2009

matney68
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SOURCE: my cadillac dts has bad vibrations over 50 mph ,

very well could just be a bad tire. I have replaced brand new tires straight from manufacturer you should check for a bad wheel or balance of tire and perferabley somewhere where they do a phase match balance.

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SOURCE: How to remove my 2001 Cadillac DTS Driver's Door

carstereohelp.com has directions.....

Posted on Oct 10, 2009

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