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2016 Colorado, same problem here., this is what I did...
I went down the engine, removed every single electrical harness that was coming from the Steering drive and pinion,
very easy to find, Just remove the Undercover (poor plastic cover) and Steel plate under the steering drive.
You can see all the connections and harness from the top, (you can’t work from here)
just open the hood, now you are seeing the engine, look down then middle of the engine, you can see the chassis, and some harness, these are the ones,
I found 2 bad seals, The bigger electrical harness, the one that comes from the computer, it has a poor seal, all the little cables (top Ones) are exposed to water. dirt etc. who knows what....
Yes, there is a seal between the harness connection, but the little cables that connect into the harness from the back, these connections are totally open, with some water energy can jump from cable to cable
Unplugged all connections, including the ones on the steering motor,
All of them had a Little lock., make sure you remove that lock, before you pull any cable
Using CRC electrical cleaning spray every single one. Let them dry.
Then, I used liquid electrical plastic. covering every single exposed cable that goes into the back of the harness (now they are water proof), Let them dry
Then re-connect, make sure you hear a “CLICK” then re-lock
This big harness (computer) and the electrical cable (12v) had bad seal
I don't know who approved this bad design,
All these connections should be connected using a single cable from the steering drive to the computer, without middle connections or harness, and they should be on the back of the chassis, not on the front,
especially if GMC uses a poor plastic cover... NOT ACCEPTALBE, even a piece of tire on road, or a road kill, can hit the plastic then the harness.
Problem start at 45000 miles... now at 60000 no problems since then.
I live in Houston, rains almost every day.
I sent my 2016 Colorado to the shop for a "Service power steering" light, only to find out that this 3 year old vehicle with 28k miles on it had corrosion that was causing these problems. I messaged Chevy on facebook as well as went back and forth with my dealership to get the whole thing paid for. Chevy didn't seem to care to help, but the dealership covered the $450 repair. Gotta love that Chevy doesn't stand behind their mistakes and products! Hard to ever buy one again
Power steering went out while making slow turn out of parking lot to main street.Extremely difficult to control vehicle. Almost hit two cars coming at me.Service power steering light came on, slick road light and traction control light also came on. Pretty dangerous situation. I implore all others with this problem to contact NHTSB. Chevy needs to recall the Colorado because this is a "when", not "if" situation.
- Steve B.,
Annandale, VA, US
All the sudden every single notification that exists started blinking (service 4wd, power steering service, stabilitrak service, check oil pressure, check oil, check engine), the speedometer started pinging up and down and same with the RPM's.
Then the really scary thing happened- THE POWER STEERING WENT COMPLETELY OUT WHILE DRIVING.
Chevrolet was a nightmare to deal with and they could not care less about my problem. Not covered under any kind of warranty and they clearly do not stand behind their product, even in a life threatening situation in one of their top selling products. Chevrolet has 100% lost a customer for life, I will be going to Ford or Toyota and will be sharing my story about their faulty truck and HORRIBLE customer service (its basically absent)
I wish I had money for lawyers because this seems like a lawsuit to me.
- Zachary T.,
Glenwood Springs, US