On the exhaust manifold, the bolts break off at the head of the bolt whether the vehicle is in motion or not. sometimes the bolts break off flush with the manifold and sometimes they break off flush with the head. i personally have had 6 out of the 12 bolts on my engine break off. the fix is to drill out the remaining piece of bolt (threaded part) and then use a bolt extractor to remove the remaining piece of bolt that is still seized in the head. well, the most common bolt to break off out of the 12 manifold bolts is the one directly in front of the drivers position. unfortunately, that is the hardest bolt to remove because of it's location. most shops i've been to say that the ticking sound that you hear once this bolt breaks off is a loose lifter. that is incorrect! the ticking sound is actually an exhaust leak stemming from, most likely, the broken bolt directly in front of the driver. the sound goes away once the engine warms up because of the metal expanding with the temperature increase. i had 3 mechanics under the hood of my truck for almost 9 hours trying to remove the 6 bolts that had broken on my engine. they had broken every drill bit in their shop (the shop is a 14 lift, 16 bay shop) that could possibly be used to drill a hole for the extractor just trying to get a hole for the extractor to fit in and then the bolt extractor broke off in the last bolt which happened to be the one directly in front of the driver. they had the cross member removed and were preparing to drop my engine when i told them to just stop there. i couldn't afford any more of a fix since i was $1,800 deep into this one day at the shop as it was. this is such a common problem that there are aftermarket contraptions to bolt on and cinch the manifold down with another bolt. that isn't the right thing to do. there should be a recall and i should get reimbursed!
Fatal collision occurred on 8/20/15 on sr 126e in lane county, oregon. vehicle drifted off roadway and sustained frontal impact with large tree resulting in engine fire. this is the third of three chev silverados that have been involved in frontal impacts this year that has resulted in a fire
Driving at approximately 30 mph, started to make right turn and engine suddenly shut off and just as quickly kick started. later same day engine shut off in parking lot, but i was able to immediately restart it. the next day engine did the same thing (shut off) but again, i was able to immediately restart it. *tr
My car has only 50,400 miles-its a 2009, yesterday while driving i felt a jolting in the rear end of the truck and it continued each time i stopped and started driving again. i took it to my mechanic who informed me it was a transmission shifting problem. i went on line and discovered that this issue has been related to other silverado trucks as a recall due to a shift cable adjuster problem which can lead to a roll away. *js
My truck has the bad gm castech cylinder heads that leak coolant into the oil. gm knows about this problem via gm tsb. dealer and mfg. refused to do anything. i feel this is not a mechanical wear issue. it is bad heads from the manufacturer. gm should be forced to acknowledge this issue and recall the affected vehicle. *tr
Coolant leak (internal) into crankcase motor overheating, bearing failure,lost of oil pressure crack in cylinder heads (castech)#862 *js
Tl* the contact owns a 2000 chevrolet silverado 1500. the contact stated that while having the vehicle serviced, he was advised that there were needle bearings in the oil. in addition, the rocker arm had failed. the vehicle was repaired. the manufacturer was not contacted about the issue. the failure mileage was 38,771 and the current mileage was 38,850.
Exhaust manifold bolts broke off resulting in pinging noise. my mechanic verified the broken bolts and told me this could lead to other more serious problems including possible fire. he also suggested i should contact a gm dealer to see if there was a recall for this problem. i have been driving for more than 50 years and i have never had exhaust manifold bolts just break off. *tr