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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Buick
Satisfied Customers: 1573
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
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What is causing the TC and ABS lights to come on on my 2004

Customer Question

what is causing the TC and ABS lights to come on on my 2004 Rendezvous?
Submitted: 20 days ago.
Category: Buick
Expert:  Chad Farhat replied 20 days ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Customer: replied 20 days ago.
where will you be posting your response?
Expert:  Chad Farhat replied 20 days ago.

hey how are you

you will need a factory scanner or equivalent to run a diagnostic scan & retrieve fault codes from the ABS module so we can narrow it down to what is failing

most common cause

1- abs wheel sensors

2- ABS module pump

3- tc switch

4- speed sensor on trans

5- output /input speed sensor

6- ip / cluster

you can try resetting it using below procedure & see if it was a glitch ,but if it came right back on ,you will need to scan it

Master reset Procedure

1- Disconect Battery Cables ( Negative & Positive Cables )you can use any electrical wire as an extension if battery cables don't reach .

2- Hold cables Together for 60 secs ,then let go

3- Wait 15 minutes

4- Make sure all doors are closed

5- Reconnect battery Cables

6- Lock & unlock the vehicles using the key from driver door side (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)

7- Enter the vehicle and attempt to start

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Expert:  Chad Farhat replied 20 days ago.

Please let me know if you need anything else on it, just reply back and we will continue

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you can always come back to this conversation and ask me any follow up question you may have on this issue

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Thank You
Chad Farhat
ASE Certified Technician

Expert:  Chad Farhat replied 16 days ago.

Let me know if you need anything else on it , just reply back here & we can continue.

if you are good , Please Kindly rate me.

Hope I was helpful to you

A 5 Star Positive Rating is Much Apreciated

This Post Will Stay Open for You To Come back and Ask me Any Follow Up Question You May have on this issue , even after you rate me

Thank You

Chad Farhat
ASE Certified Tedchnician