I agree it’s caused by a defective vacuum pump. But my original comment was based on not understanding exactly what you were saying. Sent from my iPhone using Tapatalk
No. It happens at or just above idle AFM has nothing to do with it. Windshield wipers stop working it’s that damn AFM lol. Sent from my iPhone using Tapatalk
When stopped with the engine idling and I pump the brake or even very low speeds I get the hard brake pedal. It’s like when you pump the brake with the engine off on other vehicles how after a couple pumps it gets hard. I never felt in danger though. Also never had any lights on the dash. Sent from my iPad using Tapatalk
I would take a mid sized truck in a second over a full size. That’s if I didn’t need to tow my travel trailer as well as get three adults and two large dogs into the cab and camping gear into the bed of a truck. Fact is full sizes are huge and it can be annoying to drive when you don’t need the capability. Also when you compare similarly equipped models the mid size is cheaper. Yeah you can get a full sized similar in price to a mid sized but it isn’t as well equipped unless maybe you wait until the 13 grand rebates.
Both of the trucks you looked at had auto 4. Which is essentially the same as AWD in operation. This is obtained through the use of clutch plates in the transfer case which just happens to be how many AWD systems operate with a clutch.
I have had a 14 Silverado for about 2 years now. I bought it used and have had no problems. Saying that the guy who had it before me who bought it new was running it back to the dealer a lot for recalls. Just something to keep in mind. Sent from my iPad using Tapatalk
I believe it’s purely cooling capacity. At one point the 14s with 3.08 had a 8500lb capacity. GM sent out a letter lowering it to closer to what it is today. Yes the 5.3 with 3.08 has more power to the ground then the 4.3 with 3.42 but the torque multiplication happens in the transmission rather then the differential. There is extra heat generated in the transmission and it seems the cooling system just isn’t quite enough. Just my take on it anyway given the evidence and to me nothing else logically makes sense. https://www.gm-trucks.com/forums/topic/164783-gmc-lowered-towing-rating-on-my-2014-sierra/ Sent from my iPad using Tapatalk
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