steel_3d

I have an 08 C6. Have issues with abs, AH, TC warnings coming up on the instrument cluster once in a while. I'm pretty sure I have a loose connector on the ABS module (oil cooler line has been pressing up against it for a while), and possibly a loose connector on the passenger front wheel that I have a hard time tracking down. A guy quickly scanned it with a Tech2 once and said it was front passenger sensor. But I'll need a bit more detail and be able to re-check as I play with the connectors and such. Would also be good to see realtime readings of wheel speed sensors. I get flat spots on the front right tire all the time, so my ABS is not working right. But the messages only come up once in a while.

Is there any software you guys know of that allows me to see ABS codes and sensors? I have an OBDLink MX. Does even Tech2 allow realtime monitoring of wheel speed sensors?

Thanks!

steel_3d

Nobody has looked at abs codes on c6?...

rabrooks

I'm not the best person to answer your questions but I can relate my experiences with this type of code. My front brakes would lock up at speed or I'd have a power reduction. Every time it would do this, the problem was a tire sensor. Either the sensor was dead or the sensor had lost its programing. After changing the sensor the problem was gone.

So, if your digital display shows 1 or more of your tires registering "0" lbs air pressure, let the air out and refill it to 35 psi or so. It should trigger the sensor to read and send signal

If the display shows "XX" for the pressure reading, the sensor is dead or it needs to be relearned to the car.

I'm sure there are other reasons as well. Check out the above info and report back.

steel_3d

Nah, you're talking about TPMS. My TPMS are perfect. This is definitely ABS. I think I fixed the issue.

My top oil cooler line on the radiator (stock z51 lines on DeWitts radiator) would knock against the big connector/harness on the ABS module, and it would cause intermittent circuits under heavy acceleration or heavy breaking. Everyone with DeWitts and stock lines should be careful about this! I bent the hell out of the aluminum oil cooler line to avoid interference (careful not to kink it and restrict flow!). Had to take it off the car to get enough leverage - take off junction block, flip it upside down, and it slides out toward the rear of the car with a lot of wiggling. I also loosened the ABS bracket bolts and shifted the ABS module as far away from the line as the bolts would allow. I then zip-tied the connector to the module, because the front locking tabs were broken from being knocked around, so the connector was allowed to wiggle.

After all this, it seems to be solid, and my ABS seems to be avoiding lock-up correctly. Hope it works out on track this weekend!

jft69z

Glad you got it fixed. To answer your other question, Tech 2, Snap On Modis, Verus, etc and other pro quality scan tools will let you monitor & graph multiple PIDS (including ABS) at the same time for troubleshooting. I do it all the time with ABS issues to check for signal drop outs and comparison with all 4 wheel signals at the same time.

steel_3d

Strange that there are no cheap tools to read the same pids...

Dcasole

FYI , I bought a knock off TECH II , did not cost much more than a good scanner... looks the same , works the same .....I am happy with it

Dave

madmatt9471

I bought a Cen-Tech Max Link II part# 60794 - OBD I and OBD II with ABS codes and sensors scan tool - it works excellent.

It reads and clears codes for all sorts of ABS codes and problems, for different years and is up-gradable through your computer. It also does many various makes and models of vehicles as well. I have done my daughters 2008 BMW, a 2009 BMW and many VW's as well. Plus my buddies 2008 Corvette to find his issue with his right rear ABS HUB.

Thanks,Matt