Cruise Control Module, location - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-10-2005, 12:19 AM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jun 2005
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
iwin12 is on a distinguished road
Default Cruise Control Module, location

1994 SSE, turn signal lever/switch and wires to the main wire harness replaced, vacuum diaphram unit ok, no blown fuses, DIC and speedometer OK, but cruise control still does not work.

I would like the location of the control module (little black box that converts the signal to the diaphram).

Thanks
iwin12 is offline   Reply With Quote
Old 11-10-2005, 01:48 AM   #2
Member
Posts like a V-Tak
 
Join Date: Jul 2004
Location: Humboldt Sask. Canada
Posts: 52
Thanks: 0
Thanked 0 Times in 0 Posts
Flatlander is on a distinguished road
Default

From my 94 GM service manual " The pcm controls vehicle speed during cruise control operation. The PCM receives input signals from the cruise control switches (on the multifunction lever), the Throttle position sensor, the vehicle speed sensor, and both brake switches. The PCM processes these inputs together with engine control information to control the servlo'* vacum & vent solenoid valves." Since you have replaced the switches in the multifuntion lever and checked fuses etc, I would look closely at the brake switches. You might want to test them both to make sure the contacts are opening and closing properly when brake pedal it pushed. There is no other cruise control module.

Flatlander
Flatlander is offline   Reply With Quote
Old 11-10-2005, 08:03 AM   #3
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jun 2005
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
iwin12 is on a distinguished road
Default Cruise Control Module, location

Cruise Control Module part # 25110889 Fits Many Buicks, Chevys,Olds,Pontiacs from 1988-1994

Is this the PCM you are refering to? If it is this is the part I am trying locate (physical location) on the vehicle.

My brake lights work properly. When you say to check the contacts, is that a second brake switch somewhere?
iwin12 is offline   Reply With Quote
Old 11-10-2005, 08:33 AM   #4
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

The actual cruise control is located on top of the transmission. You will be able to follow a throttle cable from the throttle body down to it. Frequently if the cruise is not working up to par the vacuum line on it is deteriorating.
BillBoost37 is offline   Reply With Quote
Old 11-10-2005, 08:41 PM   #5
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jun 2005
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
iwin12 is on a distinguished road
Default

Thanks, vacuum lines look OK, How about that brake switch. how do I check that?
iwin12 is offline   Reply With Quote
Old 11-11-2005, 12:37 AM   #6
Member
Posts like a V-Tak
 
Join Date: Jul 2004
Location: Humboldt Sask. Canada
Posts: 52
Thanks: 0
Thanked 0 Times in 0 Posts
Flatlander is on a distinguished road
Default

The brake switch assembly is mounted under the dash and the brake pedal lever activates it. It also has a vacum line running to it from the cruise control servo. When you press the brake the vacum is vented and allows the cruise control servo to quickly let the throttle return. This hose goes from the brake switch to the vacum servo under the hood. If the hose is disconnected, cracked or broken you will have problems with the cruise not engaging.

Flatlander
Flatlander is offline   Reply With Quote
Old 11-11-2005, 07:50 AM   #7
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jun 2005
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
iwin12 is on a distinguished road
Default

Excellent! The car is in the transmission shop so will be a few days till I can check everything. Will let you know.
iwin12 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1988 SSE Blower Control Module location/replacement hunt2cbr Everything Electrical & Electronic 3 12-10-2009 12:29 PM
Dash intergration module aka body control module 2000BLKBONNEVILLE Everything Electrical & Electronic 0 09-10-2009 01:43 PM
'99 Cruise Control Issues...Module vs. Servo? Jeff Jacobs 1992-1999 5 04-16-2007 03:30 PM
2001 SSEi Automatic Climate Control - Blower Control Module andereck 2000-2005 3 08-10-2006 11:58 PM
Remote keyless entry module location? module ID? bill buttermore Everything Electrical & Electronic 12 04-28-2004 12:36 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:09 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.