Leaderboard

You will likely need to do some basic troubleshooting, much of which can be done through the onboard diagnostics. The ECM is smart and stupid at the same time. It doesn't know if it is receiving bad information unless it is far out of range or missing altogether. Start by going through diagnostics and see if there are stored or pending codes. Read the various sensors in real time by scrolling through them while the engine is running, throttle position, MAF reading, engine and intake air temperature etc.. Since the ignition modules have been changed back and forth, check the plug on the ICM for bent or pushed back pins, possible double gaskets on the plug and make sure it is clean and tight. Push on the plug ends when installing rather than relying on the bolt to pull it in. Check the plug wires for correct routing and integrity, the two different styles have somewhat different connection patterns.

I updated the How-to guide on replacing cradle bushings with a warning to make it clearer that the bolts that come with the Dorman bushings will not work on the Reatta.

The four rear mounts are the critical ones, the front being more of a locator. The Dorman mounts we are using now have a greater contact area and seem to really tighten up the front end. The correct bolts are available through GM dealerships online and I have found the shipping charge to be a relatively fixed amount so ordering extra makes the per unit cost less. Bolt part number is 11517635