First incident: Vehicle driven 100 miles and then shut off for about 6 hours. Started right up and moved about 100 yards and shut off for about 30 minutes. Tried to start it and wouldn't start. After about 15 minutes, it started and vehicle driven home without further problem. Second incident, vehicle stall while moving in city traffic (about 35 mph). Came to a stop at the bottom of a busy underpass near a major intersection. I called 911 and asked that a wrecker be dispatched. As 911 waiting for a response from the wrecker company (two to three minutes), the vehicle started and I returned to my residence. Scan with obd device indicated crankshaft position sensor failure. Internet research of the problem confirms. Your investigation EA06-016 and subsequent NHTSA campaign number 07V521000 crankshaft position sensor indicates a safety recall. For some reason, GM (denny menholt Chevrolet) as well as your website, indicates no recalls on this vehicle. I have an appointment at the above dealership on 10/22 to have the cps replaced. Why isn't my vehicle part of the recall? the stall while moving at 35 mph was dangerous and the repair is expensive! thank you. I look forward to hearing from you.

- Billings, MT, USA

The "service engine soon" signal light indicates something is wrong with the transmission that requires a service costing at least $1000 to repair. Without the repair the transmission is susceptible to irratical operation includes stalling in traffic.

- Shasta Lake, CA, USA

The contact owns a 2001 Chevrolet Silverado. The contact stated that the vehicle stalled without warning while driving 40 mph. The contact was able to move the vehicle off the roadway despite the lack of steering capabilities. The contact was able to restart the vehicle after several minutes. The contact took the vehicle to the dealer where he was advised that the vehicle was not included in NHTSA campaign id number: 07V521000 (engine and engine cooling). The vehicle was not repaired and the failure persisted. The failure mileage was 47,800.

- Martinsville, IN, USA

The contact owns a 2001 Chevrolet Silverado. While driving approximately 25 mph, the vehicle stalled. The engine warning light illuminated on the instrument panel. The contact was able to restart the vehicle. The vehicle was taken to the dealer for diagnostic. The technician stated that the crank shaft position sensor would have to be replaced. There was a recall under NHTSA campaign id number: 07V521000 (engine and engine cooling) that may have been related to the failure. The manufacturer was made aware of the failure and stated that the VIN was not included in the recall. The vehicle was not repaired. The approximate failure mileage was 30,000.

- Huntingtong Beach, CA, USA

Exhaust manifold leak bolts have rusted and broke off.

- Burbank, IL, USA

The contact owns a 2001 Chevrolet Silverado. The contact stated that the vehicle was repaired under the NHTSA recall 07V521000 (engine and engine cooling) at 80,000 miles. The failure had since recurred. The contact stated that the crankshaft position sensor light was illuminating on the instrument panel. An authorized dealer was notified and stated that they would not repair the vehicle a second time free of charge. The failure mileage was 101,000.

- Ortonville, MI, USA

The contact owns a 2001 Chevrolet Silverado 2500. The contact stated that the vehicle would intermittently stall while parked or while driving at various speeds. The vehicle would continue as normal once restarted. The vehicle was not taken to have the failure diagnosed or repaired. The manufacturer was notified and the contact was informed that the vehicle was not included in the recall associated with NHTSA campaign id number 07V521000 (engine and engine cooling). The vehicle was not repaired. The failure mileage was 20,000 and the current mileage was 70,000.

- Garden Grove, CA, USA

The crankshaft sensor is failing and there was a recall # 07V521000 to replace the sensor by Chevrolet and now with only 64,000 mi they do not want to replace.

- Santa Cruz, CA, USA

Fax fwd ltr fm (mo) re 2001 Chevrolet Silverado pickup truck uncontrolled engine failure, constituent's vehicle VIN was not included in recall notice but consumer experienced similar recall issues, reply to Kansas City, mo ofc. The consumer stated in the summer of 2008 while driving, the vehicle suddenly stalled. He was able to get the vehicle to the side of the road and eventually it started again. There were no more problems until April 2009. The consumer was driving home from work, when suddenly the vehicle stalled again. Finally, a minute later the vehicle started again. The consumer took the vehicle to aamoco and upon diagnosis, the consumer was instructed to take the vehicle to a Chevrolet dealer, because a code displayed, which directed them to a safety recall. The recall was in reference to a crankshaft position sensor that could intermittently, or fail completely. The consumer went to the dealer and explained the situation. The dealer did in fact agree the problem was a defective crankshaft position sensor, but Chevrolet refused to pay for the repairs, because his VIN was not included in the recall. Updated 10/06/10.

- Florissant, MO, USA

I have a 2001 Chevrolet 2500 series truck with an 8.1 liter engine. I have experienced several engine stalls while driving. After a few minutes the engine would restart. Since the vehicle is off warranty and I do not have a local Chevrolet dealer I had an independent auto repair shop attempt to diagnose the problem. The computer was not producing codes and diagnosis was not possible. After several attempts over a few weeks a code was finally picked up indicating a "crankshaft position sensor failure" which is occurring intermittently. I then discovered that GM had recalled many vehicles due to this problem and replaced the sensor as recently as last year. I contacted GM only to find that even though the symptoms of my vehicle are identical to those recalled, my VIN # is a few out of the recall sequence but GM may consider replacing my sensor if I get a diagnosis at a GM dealership. Herein lies my problem. Due to the intermittent nature of the failure, diagnosis is difficult. It it does not occur while at the dealership I must drive it until another time. I live 35 miles from the dealership and travel even further from there often. When the engine stalls I lose steering and brakes. I am reluctant to continue driving back and forth to the dealership hoping it does not stall in traffic as it has in the past but stalls at a point that produces a code for the dealership. I have a code diagnosis from an independent shop and I just want this safety issue resolved just like GM did with thousands of other 2001 Chevrolet 2500 trucks under recall #06083.

- Buffalo, WY, USA

The contact owns 2001 Chevrolet Silverado 2500. The contact was driving approximately 40 mph on normal road conditions. The engine stalled without warning. The vehicle restarted and resumed normal operation. The failure occurred intermittent. The vehicle is in the process of being taken to an authorized dealer for diagnostic testing. The failure mileage was 60,000.

- Golden, CO, USA

Crankshaft sensor defective. 2001 Chevrolet 2500hd Silverado 8.1L VIN G vehicle has had a on and off problem with running rough, erratic shifting, service engine soon light on or intermittent. Took to the dealer bought from, never able to find anything wrong. Said it might be crank sensor, but if its running O.K. don't worry about it. This problem started in approx Feb, 2004 and was last at the dealers spring 2007. 3 days it was there and they still could not even say if there was a problem. Engine light still on. Problem with the erratic shifting, rough running, engine light on continued until Sept.2008 when the problem became very serious. Vehicle began to stall or simply just quit running all together. You would be driving at highway speeds or just local driving and the vehicle would simply shut down, leaving you with no brakes or steering. It could not be restarted until you stopped, let it sit for a sometimes up to 10 mins. Vehicle would do this 2-3 times a day, or weeks before doing it again. In July 2009 the problem became serious, where the vehicle would just shut of while just sitting at red lights or stop signs. My mechanic did a scan and dtc's for crank sensor and several others came up. It was thought that everything from broken wires to modules had to be checked. I subscribed to a online vehicle repair info site and immediately found a product safety recall #06083 12/11/2007 for vehicles with an 8.1L V-8 engine. The VIN numbers on my vehicle were higher than those in the recall, but the description of the problem fit exactly. My mechanic was showed the info and could not find anything on his service sight. It was decided to change the crank sensor. The vehicles performance increased 100% and the problem seems to be resolved. The old crank sensor was saved. Apparently G.M. has many more vehicles out there with bad crank sensors than they acknowledge.

- Mountain Top, PA, USA

The contact owns a 2001 Chevrolet Silverado. In 2006, the crankshaft position sensor was replaced at the contact's expense because the engine would repeatedly stall. Three years later, he noticed that the engine warning light would illuminate sporadically on the instrument panel accompanied by rough idling. The dealer stated that the vehicle was not included in NHTSA campaign id number 07V521000 (engine and engine cooling); therefore, they would not assume responsibility for any repairs. The failure mileage was 20,000 and current mileage was 55,000.

- North Tonawanda, NY, USA

The contact owns a 2001 Chevrolet Silverado. The contact stated that the engine stalls sporadically without warning. He is typically able to restart the vehicle after the failure. The manufacturer stated that the VIN was excluded from NHTSA campaign id number 07V521000 (engine and engine cooling); therefore, they would not assume financial responsibility for any repairs. The dealer repaired the vehicle at the cost of $323.22. The failure and current mileages were 107,000.

- Florissant, MO, USA

Referring NHTSA 07V521000 covering 2001 Silverado pickups with 8.1 engine. The original recall on crankshaft position sensor but has failed. Chevy won't honor recall as expected. This needs to be expanded. Very serious! my truck engine shut off on the highway leaving very little if any control; power steering and brakes limited.

- Middletown, MD, USA

The contact owns a 2001 Chevrolet Silverado 2500. While driving 60 mph, the vehicle intermittently stalls. The stalling rarely occurs at lower speeds. The dealer could not duplicate the failure, which occurred every four or five days. The contact was informed that his VIN was not included in NHTSA campaign id number 01V258000 (engine and engine cooling). The current mileage was 135,000 and failure mileage was 110,000.

- Vancouver, WA, USA

Vehicle stopped running while driving, almost involved in accident since I was going downhill. Vehicle would not restart. Restarted two hours later after tow to garage. Dealer inspected and found faulty crank sensor code. Dealer found NHTSA recall # 07V521000 was just issued, however my serial # was not recalled. I believe all 2001 models with this power train should be recalled to repair this defective part.

- Santa Ynez, CA, USA

The contact owns a 2001 Chevrolet Silverado. While driving 60 mph, the vehicle shut off without warning. The vehicle restarted automatically after several seconds. The failure began approximately in August of 2007 and has occurred numerous times since. The number of failures increase as the weather gets colder. Chevrolet stated that the vehicle was not included in NHTSA campaign id number 07V521000 (engine and engine cooling). The current and failure mileages were 80,000.

- Troy, MO, USA

- the contact owns a 2001 Silverado pickup. The contact stated that every 2000 to 3000 miles while driving at 50 mph the engine would lose power momentarily, and then start back up. The contact would sometimes have to pull over on the road and restart the vehicle. The failure became more and more frequent. He took the vehicle to three or four different dealers, and they could not duplicate or diagnose the failure. The contact determined that the failure was due to the ignition and had it repaired, after being told he would be reimbursed the contact has not received the reimbursement. Also the brake light and ABS lights turn on intermittently when driving without applying the brakes. This failure had occurred ten times. The transmission, fuel gauge sending unit, the right power window all had to be replaced. The engine light illuminated. Updated 03/07/07.

- Ashland, MO, USA

Engine stall without notice. Will not start without notice will die at idle without notice. Stalls vary. May stall 3 times a day or go weeks without stalling. Tried putting in a new computer. Did not help. Spent a lot of money trying to find the problem. I am pissed. Still not fixed.

- Herington, KS, USA