# 2002 Chrysler Town & Country - replace TCM or do more testing?

**URL:** <https://community.cartalk.com/t/2002-chrysler-town-country-replace-tcm-or-do-more-testing/132472>\
**Category:** Maintenance/Repairs\
**Tags:** chrysler, towncountry\
**Created:** [January 11, 2019, 8:26pm UTC](https://community.cartalk.com/t/2002-chrysler-town-country-replace-tcm-or-do-more-testing/132472 "2019-01-11T20:26:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![HaroldArbogast](https://avatars.discourse-cdn.com/v4/letter/h/7ba0ec/32.png) [@HaroldArbogast](https://community.cartalk.com/u/HaroldArbogast)\
**Post date:** [January 11, 2019, 8:26pm UTC](https://community.cartalk.com/t/2002-chrysler-town-country-replace-tcm-or-do-more-testing/132472/1 "2019-01-11T20:26:06Z")

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My cruise control dash light will light up when you press the switch, but it goes out in 10-12 seconds. The ignition must be turned off and restarted to get it on again, but it still goes out in a few seconds. The SET button is dead too, even in the short time when the light is on. I paid the local Chrysler place $111 to tell me it was a glitch in the Transmission Control Module located in the LF fender well. They said Chrysler doesn’t stock them. I called a place in Fla. that refurbishes them and the woman who answered said don’t go buying a module yet, have someone do a total exam of the vacuum hoses and cruise control wiring first. Might she be right? She could have made $150 off me and took the day off but she didn’t.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [January 11, 2019, 9:21pm UTC](https://community.cartalk.com/t/2002-chrysler-town-country-replace-tcm-or-do-more-testing/132472/2 "2019-01-11T21:21:23Z")

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Yes, she is right. Why pay $150 when a $3 length of hose will fix it? Also, why pay $150 for the module and STILL need the $3 fix.

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**Author:** ![HaroldArbogast](https://avatars.discourse-cdn.com/v4/letter/h/7ba0ec/32.png) [@HaroldArbogast](https://community.cartalk.com/u/HaroldArbogast)\
**Post date:** [January 11, 2019, 9:58pm UTC](https://community.cartalk.com/t/2002-chrysler-town-country-replace-tcm-or-do-more-testing/132472/3 "2019-01-11T21:58:26Z")

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**OK Mustang, I just called my friend who has a small shop and just about every tool you can think of. He said he has a vacuum pump that can test the system without the engine running. He’s not real sure he can isolate the cruise electric enough to test it. One thing at a time.**

![](https://global.discourse-cdn.com/cartalk/original/2X/1/1d48ad7d3c34feca02ce573f4df51d948aed4f86.jpg)

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [January 11, 2019, 10:36pm UTC](https://community.cartalk.com/t/2002-chrysler-town-country-replace-tcm-or-do-more-testing/132472/4 "2019-01-11T22:36:35Z")

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The vacuum line to the servo is easy to examine however a broke vacuum line won’t cause the cruise light to go out. There is likely a fault detected in the PCM that is shutting off the cruise control.

The cruise control is a function of the PCM, a scan tool is used to test the system.