Intro: Fix Traction Control CEL and Hard Shift, Chevy HHR and Cobalt
This is my first instructable so please bear that in mind...
My 2006 HHR kept getting the lights in the photo combined with hard shifting
The first time it happened the shop charged my over $100 for the part even thought the labor was under warranty. The next time I looked online and found out how to do it myself.
There are two solenoids that go bad [stick open] and either can cause the issue. So how do you tell which one it is? I was told to "just replace both." Well, I'm cheap and I didn't want to do that.
So I found out that the CEL code will tell you which part.
1. Code Scanner
3. 1/4" driver socket set.
Step 1: Read the Codes
Locate the code reader plug in point under the dash. Plug the code reader into that port and turn the ignition to ON, but DO NOT start it.
Once it tells you how many codes there are. Push the read button. to read the codes.
Here are what the soleniod related codes mean...
P0010/11 refers to the INTAKE solenoid
P0013/14 refers to the EXHAUST solenoid
Be sure to turn the key to off after this step.
Step 2: Purchase the Solenoid You Need.
Step 3: Remove and Replace Solenoid
These photos show the Exhaust. Notice there is a stamp on the Engine for which one is INT or EXT
First you need to move the cowling out of the way. It's attached by only the ducts and some clips. Remove the ducts and remover the oil cap. Then pull the cowling up and to the right, taking care not to damage the other things attached.
You'll need to disconnect the cable by squeezing the release it and pulling up at the same time.
Here, you may want to clean any debris from the area around the solenoid.
Unscrew the bolt with a socket driver. The old one was 10 mm and the new one was 8 mm.
Then with a pair of pliers pull straight up. it will take some force.
Once it is free, discard it and take the new one out of its packaging, taking care not to get it dirty, push it in until it seats.
Now tighten the nut by hand. it only needs to be hand tight.
Now reconnect the cable and put everything back together.
You are almost done...
Step 4: Erase the Codes
Once you are done, you'll want to erase the codes.
First deal with any codes you get as you see fit.
Then go back to the code reader, with the key on, and hold the erase button for 2 seconds. Press it again to confirm.
Once it's clear, you are really done.
Please note, this whole repair can be done without a code reader but you will have to:
1. Replace both solenoids
2. Wait for the code to clear itself after a couple of times running the car.