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Prev Professional Automotive Repair Technical Discussions for December 25, 2009
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Open Help Requests for GM
Help Request Answers
2005 Buick LaCrosse CX 3.8L MIL Lamp on VIN: 2G4WC53275
Has Mil open, clear and always returns. Replace Valve and checked pipe to exhaust. No change. Pump works. Valve opens when commanded with scan tool. Trouble codes: P2440 (Sec. A.I.R. Valve Stuck Open)

Fixes & Summaries for GM
Fix/Summary Answers
2001 GMC Yukon XL 1500 SLT 5.3L transfer case VIN: 1GKFK16T01
What a lesson I learned on this one. As I stated before, there was a very loud gear noise only in 4 wheel drive the sound was like a noisy ring & pinion even louder on decel. I pulled the transfer case and found nothing wrong so I put it back together and drov...
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