Vehicle Speed Control Problems of GMC Savana

The contact owns a 2002 GMC savanna 1500. The contact stated that while driving approximately 40 mph, there was a sudden loss on engine power as the electronic throttle control warning lamp illuminated. The vehicle was taken to an independent mechanic. The technician diagnosed that an oil line needed to be replaced. The vehicle was not repaired. The manufacture was made aware of the failure. The failure and current mileage was 73,000.

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Tl-the contact owns a 2014 GMC Savana 3500. The contact stated that while driving approximately 35 mph, the traction control failed causing the vehicle to independently brake. The vehicle was not taken to a dealer for diagnostic testing or repairs. The manufacture was aware of the failure. The failure and current mileage was 10,076. M kmj.

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The contact owns a 2011 GMC Savana 1500. The contact stated that while reversing, the vehicle began to accelerate independently. The contact engaged the brake but the vehicle continued to attempt to accelerate. The contact then put both feet on the brake pedal but was unsuccessful in stopping the vehicle, as she crashed into a wall at 14 mph. The vehicle was towed to a dealer for a diagnosis but the dealer offered no assistance. The manufacturer was notified and also offered no assistance. The vehicle had not been repaired. The failure and current mileages were 5,000.

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Consumer was traveling at 10mph while pulling out of the drive way. Then, consumer was applying brakes, and vehicle suddenly started to accelerate, gained speed before hitting two trees.

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Vehicle will accelerate on its own when put in gear as soon as consumer takes foot off brake. This has happened. Dealer cannot remedy problem. The master cylinder leaks brake fluid and brake pedal was low. The consumer uses brake excessively because of lack of engine deceleration. There is coolant leak at right rear intake manifold.

See all problems of the 1998 GMC Savana 🔎.

When depressing brake pedal rear brakes would grab. When consumer released the brakes vehicle would travel like brakes were still applied, causing vehicle to surge. Dealer has been notified. Consumer states that the manufacturer suggested to the dealer to disconnect the rear brake adjuster and was told that all the rear brakes were over adjusting, consumer states since the removal, the brakes still grab and stay partially on after the brake pedal has been released, dealer stated that the vehicle is supposed to respond like that because it was designed to have a load in it.

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Intermittenly ,transmission will not engage 1st to 2nd gear or 3rd to 2nd gear properly, and vehicle will surge forward on its own.