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View Full Version : Silverado and Sierra reliability -- better stats (please sign up)


mkaresh
10-30-2009, 10:35 AM
I wanted more up-to-date car reliability information that included actual repair rates. So in late 2005 I started getting people together to make this possible. TrueDelta now reports absolute repair rates that make the differences between cars much clearer. Results are updated four times a year, so it's possible to track vehicles closely as they age.

Over 300 Silverado and Sierra owners have already signed up to participate. A good start, but more are needed to provide full results for all years. So I'm grateful that this forum has given me permission to post this thread.

Participants simply report repairs the month after they occur on a one-page survey. When there are no repairs, they simply report an approximate odometer reading four times a year, at the end of each quarter.

To encourage participation, participants receive full access to all results, not just those for the Silverado and Sierra, for free.

For the details, and to sign up to help out:

Car reliability research (http://www.truedelta.com/reliability.php)

mkaresh
12-06-2009, 11:30 AM
We've updated reliability stats for the Silverado and Sierra to include owner experiences through September 30, 2009. In terms of successful repair trips per 100 cars per year:

2008: 40, better than average

2007: 14, better than average

2006: 101, about average

2005: 40, better than average; actual result probably similar to 2004 nd 2006

2004: 113, bout average

Decent sample sizes for the 2007 and 2008, very small sample sizes for the others.

Everyone who has been helping, thanks, I appreciate it. We'll have further updates in February and May. If you haven't already signed up to participate, I hope you will. With more participants we could provide full results for all model years from 1995 on.

Chevrolet Silverado reliability comparisons (http://www.truedelta.com/car-reliability.php?stage=pt&bd=Chevrolet&mc=58)

GMC Sierra reliability comparisons (http://www.truedelta.com/car-reliability.php?stage=pt&bd=GMC&mc=101)

Same results both pages.

mkaresh
02-13-2010, 10:29 AM
333 Chevy Silverado and GMC Sierra pickup owners now signed up. A good start, but more are needed to provide precise results for all model years from 1995 on.

Not yet signed up? Details here:

Car reliability research (http://www.truedelta.com/reliability.php)