Steering Temporarily Out Of Alignment

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DenverCruiser

DenverCruiser

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Joined
Sep 30, 2003
Threads
122
Messages
612
Location
Woodstock, GA
After sitting at a stop light with the steering close to full right lock for a few minutes (was let in between two cars) once we started moving it drove about 30 degrees off center - going straight until I pulled over 100ft down the road. I pulled over, turned the wheel left and right, and everything went back to normal. Need to go to the shop? Thanks!
 
Sound like you have one with VGRS. I don't know enough about that system to comment. Do some research on how it works and get back with us.
 
What year is your truck? Sounds like the VGRS went out of calibration. I'd check the DTC's and see if anything is pending. If not, sounds like it's fixed!
 
DenverCruiser said:
After sitting at a stop light with the steering close to full right lock for a few minutes (was let in between two cars) once we started moving it drove about 30 degrees off center - going straight until I pulled over 100ft down the road. I pulled over, turned the wheel left and right, and everything went back to normal. Need to go to the shop? Thanks!
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VGRS craziness. It's happened to me once in ten years. Similar thing, waiting to do a U turn at full lock, got my break in traffic and made my move - I was going straight down the road with the wheel maybe 180 degrees off for a few hundred feet - a WTF moment. Then it just straightened up and back to normal. Never happened since, no fault ever found, no DTCs set in memory. I do a steering reset and calibration every now and again to keep the steering ecu on its toes.
 
I mean performing a steering reset and VGRS calibration, in techstream. It unlocks your steering wheel, you recentre it to get rid of any steering wheel misalignment and the program takes about 5 seconds to recalibrate the system. It's suppose to be checked and done after a wheel alignment too.
 
Mine has done this a few times in the last couple weeks. The first 2-3 times it was off by only a few degrees. When I pulled out of the parking garage at work yesterday it was off by nearly 75! (top of wheel was almost totally inverted.) At a long light i straightened the wheel and did a power cycle and it went back to normal and the VGRS light turned off. Nothing has changed on the suspension since I've owned it (about 6 months) and there aren't any glaring issues.

Weird for sure and I'm crossing my fingers the module isn't going out on me.

I guess the only thing odd thats happened is that the steering wheel won't telescope back in when I pull the keys. I think I've figured out that if I'm more patient and shut down vehicle ==> pull key ==> unbuckle seatbelt ==> pause ==> open door it will telescope but if I go in one swift motion like I typically do no dice. Not sure if these systems are connected at all but I did see someone mention the telescoping wheel in another VGRS thread...
 
The vgrs/steering wheel going way off center temporarily after having the wheel at full lock is "normal". The cause is the vgrs system is deactivated to prevent overheating, it's a noted "feature" in the manual. Your telescoping function working intermittently is the first sign it's on it's way out, over the years I've owned mine I've observed that as the weather cools the issue pops up (thickening grease and increased stiction in the worm drive I suspect) and it tends to go away in hot weather. Then one day it stops working all together...
 
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