Can oversized tires mess with my speedometer

[PKFL]

I have a 2004 AWD Yukon Denali that orignally came with 265/70 17 tires. I just put 285/70 17 tires on it and now the speedometer is not working. Is this something that can be fixed?

 

[Splatmaster527]

Well bigger tires will surely make it read different than it did before but it should still work...
Do you mean it seriously doesnt work or its off by a few MPH?

 

[gdddup]

bigger tires size wont make the speedo not work at all. but throw it off like your truck is reading 55 and your doin 50. which you can fix with a tune or programer

 

[PKFL]

Well bigger tires will surely make it read different than it did before but it should still work...
Do you mean it seriously doesnt work or its off by a few MPH?

It just stopped working all together after about 2 days of it reading off about 3mph

 

[jem556]

Your problem is not likely due to your tire size but a result of a GM design flaw that causes speedometer/cluster gauge problems to be common in GM NBS tahoes & yukons. There was a factory recall issued but to qualify for free repair, you had to have less than 80K of mileage if I remember correctly. There is a cottage business of folks doing these repairs...

 

[PKFL]

Your problem is not likely due to your tire size but a result of a GM design flaw that causes speedometer/cluster gauge problems to be common in GM NBS tahoes & yukons. There was a factory recall issued but to qualify for free repair, you had to have less than 80K of mileage if I remember correctly. There is a cottage business of folks doing these repairs...

Thank you sooo much for your help. I completely forgot that I had read something about that. It was just such a weird coincident that it happened right after I got the tires so it didn't even click.
Is there any possibility you have any ideas on where to find the info on do it yourself kits?

 

[blueflamed03]

email this guy, did mine, saved a ton of cash.
http://stores.ebay.com/BRIANS-SPEEDOMETER-REPAIR-CENTER