My 2004 Silhouette had this problem any time the outside temp went over 26 degrees centigrade. After driving a short while, guages go nuts, traction control, check engine and other lights activate, speedo gets jumpy and the engine stalls.
It will restart almost right away only to repeat the problem shortly.
I traced the problem to the ingnition relay in the fuse/control box, right corner under hood. ( New relay did not help).
High underhood temp, + battery heat ( right under the box) are combining to cause this relay to open temorarily. Driving with the plasic cover removed has cured this hot stall problem. Its never an issue in cooler temps. ( Some models may have less accessories running thru this relay, creating less heat, and so may not have this problem). Venting the cover also helps. I've done this recently.
I would suspect the Venture and Montana will also experience this problem. Hope this helps. Sparkii
Wednesday, September 1st, 2010 AT 9:32 PM