One problem related to battery has been reported for the 2005 Buick Rainier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Buick Rainier based on all problems reported for the 2005 Rainier.
The speedometer began sticking appx 70,000mi. In summer 2011. I contacted my local dealer an they stated the panel needs replaced @ a cost $450. 00 and only 5 to 10mph off at the time. I let it go at that time. Since then the alt. Gauge started jumping(changed battery) still jumping. Now the oil pressure gage bottomed out and I was out of town. Had this checked out and the panel needs replaced now. Since the oil pressure went out this is now a safety issue! do I trust the elec. Panel? (no!). Since numerous complaints, it's time for the manufacture to fix this problem! this is a costly repair and I'll have to have it fix now.