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Old 05-20-2012, 11:10 AM   #1
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electric power steering failure at 560 miles!!

Of course I will check the basics of the wires and associated fuses first; however, a trip to the dealer may be necessary. I stopped to get gas and when I restarted the car, the steering felt totally unassisted and then the error message of "service power steering". I pressed the ONStar button and they had no info other than to be careful and they saw the same error message on their diagnostics. Darn it
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Old 05-20-2012, 11:12 AM   #2
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Originally Posted by Stephen12ZL1 View Post
Of course I will check the basics of the wires and associated fuses first; however, a trip to the dealer may be necessary. I stopped to get gas and when I restarted the car, the steering felt totally unassisted and then the error message of "service power steering". I pressed the ONStar button and they had no info other than to be careful and they saw the same error message on their diagnostics. Darn it
I knew the first ZL-1s were going to have some issue.
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Old 05-20-2012, 11:50 AM   #3
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Sucks much!! I'm starting to get paranoid about having a steering problem on my car eventually. Hopefully they will zero in on the issue as your not the first to post about having problems with the electric steering. I would expect a TSB about the steering in these cars to show up soon
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Old 05-20-2012, 11:57 AM   #4
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Rumor was that that was the qc hold up initially.
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Old 05-20-2012, 12:15 PM   #5
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Man i could only hope something like this wouldn't happen taking an off ramp at a quick pase or something. Could be very dangerous... What about at a roadcourse???
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Old 05-20-2012, 12:20 PM   #6
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This is the 2nd car on here with the same problem
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Old 05-20-2012, 04:42 PM   #7
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Man i could only hope something like this wouldn't happen taking an off ramp at a quick pase or something. Could be very dangerous... What about at a roadcourse???
If the car is rolling pretty fast, you'd probably barely notice the loss of power assist...it's no big deal having no power steering above 15 mph.
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Old 05-20-2012, 04:55 PM   #8
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Old 05-20-2012, 05:53 PM   #9
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Old 05-20-2012, 06:39 PM   #10
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I got the same message on my Cobalt SS. Took it to the dealer and they found that a mouse had chewed through the wires. Not covered by warranty. Now I have moth balls under all my cars in the garage.
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Old 05-20-2012, 06:43 PM   #11
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Ok...I removed the underbelly pan (16 bolts and 2 plastic buttons!) and checked the connections to the power steering going to the rack and tapped on the rack with a plastic hammer. Now, it works but I have no idea if this problem will recur. Nothing seemed loose and no weatherpack connectors appeared to have issues. I will have the dealer check it if I loose power steering again.
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Old 05-20-2012, 06:46 PM   #12
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If the car is rolling pretty fast, you'd probably barely notice the loss of power assist...it's no big deal having no power steering above 15 mph.
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Old 05-20-2012, 07:18 PM   #13
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disconnect power to the power steering and try it...anything under 10mph was almost impossible to turn. At 70ish mph, it wasn't horrible but still quite an effort. My previous car with power steering failure was much easier to turn (1968 Chevelle).
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Old 05-20-2012, 08:27 PM   #14
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disconnect power to the power steering and try it...anything under 10mph was almost impossible to turn. At 70ish mph, it wasn't horrible but still quite an effort. My previous car with power steering failure was much easier to turn (1968 Chevelle).
Just shut the engine off in any car with a power steering pump while you're driving, it's easier than disconnecting stuff...yeah it's different, but it's not like you're suddenly going to drive the vehicle into a wall because of it. Electric power steering is just something that's still kinda new so people are afraid of it...just like electronic throttle's...how many people still think Toyota's actually had a problem? Do you think any of them know the "fix" that was done under warranty involved (for most dealer mechanics who found a faster way to do it than using the Toyota tool) a hack saw blade and some tape? Every model of car will have some examples of problems with every piece of that car...until you actually see a TSB for it, it's just 1 or 2 cars having problems, and I'm sure GM will fix them.
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Old 05-21-2012, 03:08 PM   #15
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I had a 69' L78 RS/SS where power steering wasn't even an option. Parking lots were such a load of fun to do slow speed maneuvers
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Old 05-21-2012, 03:11 PM   #16
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Originally Posted by Stephen12ZL1 View Post
disconnect power to the power steering and try it...anything under 10mph was almost impossible to turn. At 70ish mph, it wasn't horrible but still quite an effort. My previous car with power steering failure was much easier to turn (1968 Chevelle).
Think about all the leverage your ZL1's small steering wheel is giving up compared to the Chevelle's huge tiller, then factor in the large front tires on the ZL1. Loss of power steering on the thing would be no fun.
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Old 05-21-2012, 08:07 PM   #17
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Here's what's in SI right now...



Service Information



2012 Chevrolet Camaro | Camaro VIN F Service Manual | Document ID: 2831254
--------------------------------------------------------------------------------


#PIC5643A: PQC Part Restriction - Electronic Power Steering (EPS) Service Steering Message Displayed And Increased Steering Effort - (Apr 16, 2012)







Subject:

PQC Part Restriction - Electronic Power Steering (EPS) Service Steering Message Displayed And Increased Steering Effort






Models:

2012 Chevrolet Camaro ZL1



--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
This PI was superseded to update department contact information. Please discard PIC5643.
--------------------------------------------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:


The DIC may display "Service Steering" in combination with an increase in steering effort and standard diagnostics may lead to steering gear replacement. As of 03/30/2012 Electronic Power Steering P/N 22848599 has been placed on restriction through PQC. This part restriction will allow Engineering to evaluate the fault while the steering gear is in the vehicle and prior to any repairs.

Recommendation/Instructions:

Important: Do not perform a Clear DTCs function.


Retrieve any stored DTC information from the Electronic Power Steering module. If any of the following DTCs are set (history or current) in the EPS module or you are unable to diagnose the cause DO NOT CLEAR DTC(s), STOP FURTHER SERVICE ACTIVITY, complete the questionnaire below and contact PQC for further action.






DTC C0569







DTC C0475







DTC C056E







DTC C0545







DTC C056D







DTC C055C







DTC C0544


For all other concerns where the above DTCs are not set, follow the published service procedures to complete the repair. Should the repair require steering gear replacement, contact PQC to review the diagnosis and order the part.

Please complete this questionnaire prior to contacting PQC.

Customer’s concern:

What is the customer’s description of the concern?

How many times did the customer indicate the issue occurred?

During which of the following driving condition(s) did the customer have a steering concern?

Low Speed turn Y/N

Straight-away Y/N

On a rough road Y/N

Was the concern temperature related? Y/N

Was the concern weather related? Y/N

Did the concern occur during an engine start (cranking)? Y/N

Please list any other conditions (if applicable) when the concern occurred.

What are the current and/or history DTCs?

Is the vehicle still exhibiting the customer concern? Y/N

Has the vehicle been modified with any aftermarket accessories or options? Y/N

What SI document number was used during the diagnosis?

Have the wires/harnesses been checked for proper routing and free from damage, stretch, pinch, etc.? Y/N (If no, perform this inspection prior to calling PQC.)

Have the wires been checked for any damaged, loose, or disconnected connectors? Y/N

(If no, perform this inspection prior to calling PQC)

Have any wire connectors or terminals been disconnected or loosened and then re-torqued? Y/N

Has the EPS supply voltage been checked on both sides of the EPS Fuse? Y/N

IF Yes, what was the voltage with ignition OFF? ___ Volts

(If no, you need to check and record voltages with ignition OFF prior to calling PQC. This fuse is not accessible; it is molded into the EPS power cable between the Battery Positive Junction Block and the EPS motor. Measure voltage at both ends of the EPS power cable)

Have you made any other observations or have any recommendations of what may be causing this concern?

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.




GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.





WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION


© 2012 General Motors. All rights reserved.
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Old 05-21-2012, 08:09 PM   #18
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lol that's gonna be a fun bulletin to follow! And then sit on the phone with technical assistance for 2 hours...
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Old 05-21-2012, 08:17 PM   #19
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Since the bulletin asks if any mods are done, I wonder if GM could use it as an excuse to deny warranty coverage if the car showed that it has been tuned for example. Hopefully this wouldn't occur, but it would be something to be aware of.
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Old 05-21-2012, 09:12 PM   #20
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I'd prefer a proper manual rack and pinion over electric steering
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Old 05-21-2012, 09:26 PM   #21
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Old 05-21-2012, 10:03 PM   #22
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The smartest thing to do is take it to the dealer!
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Old 05-22-2012, 09:59 AM   #23
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Quote:
Originally Posted by Stephen12ZL1 View Post
Ok...I removed the underbelly pan (16 bolts and 2 plastic buttons!) and checked the connections to the power steering going to the rack and tapped on the rack with a plastic hammer. Now, it works but I have no idea if this problem will recur. Nothing seemed loose and no weatherpack connectors appeared to have issues. I will have the dealer check it if I loose power steering again.
We apologize for the inconvenience this may have caused. The best thing to do is to take it to the dealership if this issue does happen again. If you have any other questions or concerns, please don't hesitate to contact me via PM.

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Old 05-22-2012, 11:06 AM   #24
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Originally Posted by xx_ED_xx View Post
I'd prefer a proper manual rack and pinion over electric steering
Correct me if I am wrong, but the rack and pinion is basically the "same" for any vehicle. This one uses electric assist vs belt driven pump assist.

Unless you want manual, back to the 60s, no power assist steering, I do not understand what you mean?
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Old 05-22-2012, 12:17 PM   #25
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EPS is more efficient than traditional PS and they both can drive a rack and pinion assy
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