it is a k5 no the engine is oe. it has a 700 auto trans. the motor has almost100,000 miles on it. i have checked the tps on it. pulled the codes and it came up with a tps fault and a egr fault. i have also replaced the egr and all vacume lines to be on the safe side they were looking bad. the truck has had good maintinace its life. i did a full tune up in march.

 

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