MC1of80 Posted November 14, 2019 Share Posted November 14, 2019 Hello all. This is a post for those of you who have full size GM 1500 series trucks and the G80 "gov lock" posi unit. It has been installed in the GM light duty truck rears 8.5/8.625 since the mid 70s and GM still uses this, for better lack of a word, junky unit. I have a 2010 GMC Sierra that is my daily driver and tow vehicle. For the better half of 2 weeks the rear has been "locked" , like a spool for no reason. Knowing these rear carrier units well, I decided to purchase a Detroit truetrac unit and new carrier bearings. I personally love the truetrac unit having installed many and having one in my 70 SS that has been beaten hard and is taking all the abuse I can throw at it. Well, take a look at the pics of the original "gov lock" . Just a heads up for those who do not know.... Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted November 14, 2019 Share Posted November 14, 2019 That's never good, glad I have a 2500 HD to tow my trailer. Quote Link to comment Share on other sites More sharing options...
willie Posted November 14, 2019 Share Posted November 14, 2019 OOOOhhh Boooy!!!! What did you do Tom? How did that happen? Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted November 14, 2019 Author Share Posted November 14, 2019 Hey Willie, wish I knew. If I was beating it, I would understand. Now with the new Truetrac differential I can beat it to a pulp if I like. Lolol Quote Link to comment Share on other sites More sharing options...
imr Posted November 14, 2019 Share Posted November 14, 2019 oh that looks ugly. amazing how they have not redesigned this. The rear end looks ugly, your truck is beautiful. Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted November 14, 2019 Share Posted November 14, 2019 But that is a nice looking truck Tom Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted November 14, 2019 Author Share Posted November 14, 2019 Thanks! It's a special anniversary edition/color. Laser blue. Supposedly, not many 2010 Sierra's and Silverados were built with this color. There is a blue that's similar but it's blue. The laser blue does a flip flop. My son and brother call it blurple. Sometimes it looks blue other times purple. Lolol Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted November 14, 2019 Share Posted November 14, 2019 Its a very nice color, mine is black and stays black lol unless its dirty then its just ugly. I'm not a fan of black but the truck was to nice and the deal was good to pass up and I needed a 3/4 ton to pull my camper 1 Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted November 15, 2019 Author Share Posted November 15, 2019 Sweet! 😃 Quote Link to comment Share on other sites More sharing options...
willie Posted November 15, 2019 Share Posted November 15, 2019 Glad you got her done Tom. Don't beat her to much you have plenty of miles to go and tons of M/C's to save. Nice job on getting her done so fast. And yes i also like the color blurple. LOL Quote Link to comment Share on other sites More sharing options...
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