Question about 1988 GMC Suburban

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Why and how can i fix the cruise control on my '88 GMC Suburban? I do not whats wrong with it. It just doesnt work

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6ya6ya
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Posted on Jan 02, 2017

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  • 314 Answers

SOURCE: my 1984 gmc vandura full size fan

Check to see that the vaccum hose is on from the carb to the cruise unit. Most common prob. Frankster016

Posted on Oct 23, 2008

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  • 328 Answers

SOURCE: cruise control wont work

normally the brake switch is the issue with these trucks. it is located under the dash where the brake pedal meets the linkage to the brake booster.

Posted on Feb 16, 2009

  • 59 Answers

SOURCE: 1988 GMC Suburban cruise control not working after

check the relay of the cruise control maybe blew up

Posted on Oct 14, 2009

mrgreenz
  • 962 Answers

SOURCE: 2007 GMC Yukon Cruise Control

Check the speed sensor. Look up the location at autozone .com or google. It is either near the tranny or at the passenger side wheel. The speed sensor is almost always connected to cruise control problems.

Posted on Dec 16, 2009

  • 1608 Answers

SOURCE: cruise control stopped working on my 93 sierra

The only other thing that is the turn signal handle.This is the switch.It can be removed by making sure it is in the off position and pull straight out.Depending on which kind of handle it is.The wire connector is either right by the area where you pull it out or under the dash.Just follow the wire.Hope this helps.Good luck.

Posted on Dec 18, 2009

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1993 gmc suburban rpms jump without acceleration, hard shift from 1st to 2nd


Sounds like a vacuum leak probably at the modulator valve on or close to the transmission.

Feb 06, 2013 | 1993 GMC Suburban

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1990 v1500 suburban speedometer bounces around odometer and cruise works.......


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Oct 19, 2012 | 1990 GMC Suburban

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I have a 1992 gmc sierra,the cruise control still doesnt work after replacing the box and switch, is there a seperate fuse or trans relay?


The brake light switch can prevent the cruise from working.
On the cars there is a 5amp cruise fuse so I would think there is one for trucks too.
You may have to get a shop manual to get the diagrams to check the circuits and have a test procedure.

Sep 13, 2012 | 1992 GMC Sierra

1 Answer

I have a 1998 gmc sierra 1500 z71 and the cruise control doesn't work at all. Is there any way I can fix it myself?


Actually FIXING the cruise control is usually not very hard. The hard part is finding out what is WRONG with the cruise control. Cruise control problems are usually caused by a broken clockspring (or contact assembly) in the steering column or a faulty cruise control servo assembly. Of course, there are several other possible reasons for the cruise to malfunction, but these are the most common.

The first step would be to scan your Engine Control Module (ECM) for fault codes. Please note that cruise control faults will not normally cause the Check Engine light to illuminate, so it is NOT safe to assume there are no codes present just because the light is not on. If the Check Engine light IS on, then you need to scan your ECM anyway! If there is a problem with the servo assembly, there will most likely be a code set. Problems with the clockspring will not usually set a code. A good clue that this could possibly be the problem is an inoperative horn and/or the Airbag warning light being on. (A broken clockspring will also cause these things)

Jun 12, 2011 | 1998 GMC Sierra

1 Answer

No brake lights-the turn signal, four way flashers work. The cruise control cancels when applying brakes. ?


Cruise control is suppose to cancel when brakes are applied.

Did you try just changing the bulbs?

If its not the bulbs I would have to say check the brake light switch at the pedal, it is a different switch than the cruise control cut out switch.

Nov 13, 2009 | 1996 GMC Suburban

1 Answer

Cruise control in-op


Check to see if the vacuum line leading to the cruise control under the hood has come loose.

Jul 09, 2009 | 1999 GMC Suburban

1 Answer

Cruise control stopped working


I had a similar problem with my 99 Suburban. After not being able to solve the problem for about six months, my headlamps stopped working on the low beams. This led my mechanic to change the multi-function switch on the steering column (turn signal/cruise control switch/high beams) When he did this he discovered that the wire terminals at the switch had gotten hot enough to melt a little, this allowed the ground terminal to slip out of the connector. Once replaced, the cruise control miraculously started working again. I have had no problems with it for the last four years. The local GM dealer told me later that they had quite a few trucks with the same problem and it typically started with customers noticing that their cruise control stopped working. Give this a try!

May 09, 2009 | 1999 GMC Suburban

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