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Question posted by masliudin on November 17th, 2012

2012 Chevrolet Colorado

engine spec: duramax diesel 2.8 LTZ turbo diesel 6 speed semi auto 2012 Origin: GM under Thailand spec (same as holden colorado at aussie 2012) power: 132kw/346lb-ft milage now 32k ref: 1. idealing is fine 2. When its run from gear 1, to 2, to 3, to 4, 5, seems ok..but when it comes till 6th gear at 2500-300rpm @ 150-160km/h or when you press the padel at high speed the car become unstable , rough, jerking and blowing a lot of black smoke followed by white smoke, rpm will remain 2000 even if uf press the padel.it often persist. last time service was at 2500km

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