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Ask Don 'Mo Lurch' Your Own Que...
Don 'Mo Lurch'
Don 'Mo Lurch', ASE Certified Technician
Category: GMC
Satisfied Customers: 20762
Experience:  GM, GMC, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics
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My 2003 gmc envoy xl cruise control stopped working while i

Customer Question

My 2003 gmc envoy xl cruise control stopped working while i was driving how do i fix it
Submitted: 1 year ago.
Category: GMC
Expert:  Don 'Mo Lurch' replied 1 year ago.

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sorry for the delay............
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Greetings...... “Hi, I’m Don (aka MOLurch) and I look forward to helping you!”
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The Cruise Control on this vehicle is "fully electronic"
There are NO moving parts
The PCM monitors the signal circuits of the cruise control switches in order to determine when to capture and maintain the selected vehicle speed.

The PCM uses the TAC motor in order to control the vehicle speed.

The following are the main components of the cruise control system:

•The powertrain control module (PCM)
•The On/Off switch
•The Resume/Accel switch
•The Set/Coast switch
•The TCC brake switch
•The stop lamp switch
•The throttle actuator control (TAC) motor
•The vehicle speed sensor
Use of GM Scan Tool is needed to Test & Program
Customer Input is checking connections at the Fuses, (HVAC 1, located in Rear Fuse Panel & ST / LP located in the Under Hood Fuse Panel, PCM, Brake Light Switch & Cruise Control Switches
Prior to any repair, one should Scan the Vehicle Cruise System for Trouble Codes & follow repair procedures from there

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Expert:  Don 'Mo Lurch' replied 1 year ago.

Use of GM Dealer Scan Tool or equal is needed to Test the PCM, BCM & TCC for Communication thru DATA

.apprx 1 hour labor

Expert:  Don 'Mo Lurch' replied 1 year ago.

.
IF you need more information, please ask "prior" to Rating.
.
Please do the right thing and leave a rating, using the rating system, so I may be credited for this Q&A.
.
NOTE: Do NOT Rate on how much TIME you waited, because I am not on 24 / 7 and I answer as soon as I see the question.
The question will still remain open for follow up questions if needed.
.
If for any reason, you can't rate my answer OKAY, GOOD, or EXCELLENT today.
Please reply and let me know why, so I can help more/better.
.
Rating is very Important to our Service
.