I completed the 100k mi service earlier this week and found that the Evap/Heater Core box is falling apart from the heat of the engine. Is there anything I can do to fix this besides taking everything apart to replace the entire box?
My 95 Concours and STS both had the same problem. Miust be common. On the Concours I was able to patch with black silicon adhesive. Not real pretty but is holding the case together so far. (1 year). On th STS I had the engine out and replaced the housing. about $55 from Gmpartsdirect.com.