felgarc Posted October 4, 2014 Share Posted October 4, 2014 We have a 2009 Granite with a 10 speed manual transmission, it works 24/7 with 4 different drivers and all of them where complaining about it making a hard noise on 2 gear(low range) and shifting out of gear, finally one of our guys had and accident when going downhill fully loaded and he says it shifted out of gear, we had an OEM dealer mechanic check the transmission and the first thing he said was that it is impossible for this to happen yet I had 4 guys reporting the same issue for about 2 months, can anyone help me identify the problem?. Quote Link to comment https://www.bigmacktrucks.com/topic/37258-gu813-transmission-problems/ Share on other sites More sharing options...
Mackpro Posted October 7, 2014 Share Posted October 7, 2014 If its a mack trans, check the nut that holds the rear yoke on. For the jumping out of gear see this bulletin.shifter.pdf Quote Link to comment https://www.bigmacktrucks.com/topic/37258-gu813-transmission-problems/#findComment-262472 Share on other sites More sharing options...
felgarc Posted October 10, 2014 Author Share Posted October 10, 2014 Thanks this is a big help Quote Link to comment https://www.bigmacktrucks.com/topic/37258-gu813-transmission-problems/#findComment-262783 Share on other sites More sharing options...
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