Adam Leinss

The series is 1500.

Yeah, I hope so too. I was reading one story where a guy's vacuum pump was defective and pushed back bits of metal back into the engine block and toasted it. Since the dealer did the repair they should be responsible if anything like that should happen.

I have a 2014 Silverado with 42K miles. On Sunday, I was pulling into the garage after a short errand and I lost most of the braking power. I was able to stop the truck by pressing the brake pedal hard. I immediately drove backwards and it did the same thing. I had it towed to a local mechanic on Monday to have the braking system checked out. They had it for about 4 hours and could not find anything wrong. They showed me an article how the ABS system can kick in if the system is over worked due to hot weather, driving up hills, frequent stops, etc. However, I just was away for 15 minutes: it's in lower 60s and I wasn't doing hills or frequent stops. The mechanic did 2 test drives and he told me the braking system was fine. I carefully drove it to the GM dealership for a 2nd opinion and within 15 minutes they diagnosed it as a weak vacuum pump. It was only doing 10 in Hg and it should be doing 27 in Hg. My question is having a vacuum pump as part of a braking system exotic? Is this something a normal mechanic should have been able to diagnose? I found the TSB here by Googling vacuum and 12669488 as the part # which describes the problem perfectly: http://m.gm.oemdtc.com/TSB/SB-10081053-2280.pdf I guess my worry is that this mechanic gave me a clean bill of health on the braking system which shakes my confidence in any future work he may do for me. Are these 2014+ Silverados just too new or specialized to be worked on by normal mechanics?