c6_noob

wow, riddle me this please. Take my 2006 z51 to local dealership. Been throwing codes for the ABS and active handling system for 2 years now, finally decided to do something about it.

They call today, tell me its throwing codes for MAF, Throttle Body, and the recirc hose that connects throttle body to air filter. (BTW check engine light was not on)

I'm told they can't diagnose the Active handlung/ABS until they replace all those fuel delivery components for North of $2k. Im calling BS.

Anyone?

Corvette_Ed

I'd find somewhere else to take the car. It takes less than 10 minutes to pull all of those parts, and the same amount of time to put them back on, and the parts don't cost anywhere near $2k. Sounds like a rip off to me.

SixAddict

Run, run from that crap stealership as fast as you can....

Ahrmike

ABS code would probably trigger the AH code too. i suspect bad ABS sensor or a bad BCM. AH can also be set off commonly by bad TPMS, bad sws, etc.

449er

Seems like a lot of money to repair/replace those parts

farmington

A new silver blade TB isn’t cheap now

c6_noob

Thanks all. Felt like a ripoff scam to me as well. Now it gets better. I tell them I'm not spending 3-4k in repairs on the car. Give me a trade in quote and I'd look for a c7. They offered $6k....and much of that because all the work that needed to be done. I argued retail repair cost vs actual repair cost, and a host of other things. I was furious.

2006, z51, convertible, good condition, 84k miles. I not so politely told them to fly a kite.

clearwaterms

$6k; hahaha

BlindSpot

Assuming the EMS stored P-codes to support the MAF, TB issues, the second conclusion by the dealer (can't diagnose the Active handlung/ABS ) is entirely correct.

MOST simply do not understand how AH and TC work. AH and TC are partly controlled through actions by the ECU, but it's a very big part. Regards the ECU, it contributes to AH, TC and ABS issues by "governing" the actual throttle position and timing. Because AH and TC are SAFETY devices, if the ECU is reporting almost any failures (such as a MAF and TB problem), the EMS will automatically SUSPEND TC and AH.

The part that most do not understand is when something goes wrong in the emissions category (basic engine management functions) and the dash flashes warnings "SERVICE AH" "SERVICE TC" that these warnings are to notify the driver the ECU has suspended these safety devices. In other words, they will not work if your life depended on them. The problem here is the terrible messaging that GM chose to use. It would have been much better (less anxiety on the uninformed driver) if the messages had said - "Active Handling INACTIVE" instead of SERVICE.

BTW, once the P-code issues are resolved and FULL integrity is restored to the EMS, those messages extinguish on their own. UNLESS, they too had a defect, but 99% of the time they appear as a consequence of the failure(s) in the core ECU controls.

This is not to say the dealer's quote to fix certain things is not out of the ballpark, but the part about not being able to tell much with AH, TC and ABS is true.