cruise control

mj6971 · 10-29-2009, 01:40 AM

Have a 99 chevy tahoe LT cruise control not working fuse is good,there is no vacume hoses on cruise control unit. What is the problem?

silverhairdeere · 10-29-2009, 02:20 AM

it could be anything from the cruise control module , the multi position swith on colum to the brake switch or even the ecm , with out further testing with test light and a muli-meter it's a **** shoot . you could try scanning for codes also. post back and let us know what you foumd out .

shd

crabtruck · 10-29-2009, 06:18 AM

Like shd said, way too many possibilities with that little info.
Can start with some basics though: is cable hooked tight from CC mod to eng?
Is wire connector clean and tight at CC mod ?
Are switch connections tight at brake (and clutch if man) ?

If you have one of the radios with the speed effected volumes: work ok ?
That's a shared signal wire from ECM to CC and radio.

Does everything else on truck work right ? speedo, brake lites etc.
Do try to get codes pulled - could be a huge help.

Drawing just for reference:
.

mj6971 · 10-29-2009, 07:12 PM

All the other things i checked.i do need to run the codes, the engine check light is on but went i had it turned off and the cruise still do not work.And I did in a cd player and the cigar light does blow the fuse for the lighter.

OssipeeSteve · 11-14-2009, 10:18 AM

Try changing out the brake switch. It cost $10 and be sure to pick up a new switch retainer clip before you start. Its cheap enough and solved my problem.
Good luck.

10-29-2009, 01:40 AM	#1
mj6971 Full Member Join Date: May 2008 Posts: 28	cruise control Have a 99 chevy tahoe LT cruise control not working fuse is good,there is no vacume hoses on cruise control unit. What is the problem?

10-29-2009, 06:18 AM	#3
crabtruck Senior Member Join Date: Jul 2007 Location: on your 9 Posts: 3,366	Like shd said, way too many possibilities with that little info. Can start with some basics though: is cable hooked tight from CC mod to eng? Is wire connector clean and tight at CC mod ? Are switch connections tight at brake (and clutch if man) ? If you have one of the radios with the speed effected volumes: work ok ? That's a shared signal wire from ECM to CC and radio. Does everything else on truck work right ? speedo, brake lites etc. Do try to get codes pulled - could be a huge help. Drawing just for reference: . Attached Thumbnails

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10-29-2009, 02:20 AM	#2
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	it could be anything from the cruise control module , the multi position swith on colum to the brake switch or even the ecm , with out further testing with test light and a muli-meter it's a **** shoot . you could try scanning for codes also. post back and let us know what you foumd out . shd

10-29-2009, 07:12 PM	#4
mj6971 Full Member Join Date: May 2008 Posts: 28	All the other things i checked.i do need to run the codes, the engine check light is on but went i had it turned off and the cruise still do not work.And I did in a cd player and the cigar light does blow the fuse for the lighter.

11-14-2009, 10:18 AM	#5
OssipeeSteve Full Member Join Date: Mar 2008 Location: Plymouth, MA Posts: 27	Try changing out the brake switch. It cost $10 and be sure to pick up a new switch retainer clip before you start. Its cheap enough and solved my problem. Good luck.