Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING
PIP-4138K01/01/201110037933Gm: the service engine soon light is on, there is also a misfire or engine noise. there are multiple possible causes. *rm06/08/2011
PIP-4138K01/01/201110037933Ready06/08/2011
70909/01/200510018126Oil life system reset procedures - cars. gm tech link. *tt12/15/2005
36083608A10017754Information to update bulletin 05-06-01-001c for crankshaft harmonic balancer friction washer. *tt11/29/2005
05060100102/01/2006050601001D10013469Check gages light battery voltage, low accessory drive belt slipping or missing. *eh04/19/2005
324211/09/20041109200410011749Oil leak at oil cooler lines. *eh01/31/2005
ENGINE AND ENGINE COOLING - COOLING SYSTEM
61111/01/200410016264Low coolant system operation. *sc09/06/2005
319910010635Information on low coolant message. *tt12/03/2004
ENGINE AND ENGINE COOLING - ENGINE
PIP-4492P08/01/201010036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe03/16/2011
PIP-4492P09/01/2010PIP-4492Q10036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe updated 3/21/03/16/2011
080408/01/200410014346Oil life system reset procedures - cars. *nm04/29/2005
04060102503/01/2005040601025A10011204Exchange program for 2005 model year engines. *tt update. *tt01/10/2005
315501/01/200410010286Erratic or inoperative oil pressure gauge. *tt11/09/2004
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - CRANKCASE (PCV)
PIP-4492P08/01/201010036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe03/16/2011
PIP-4492P09/01/2010PIP-4492Q10036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe updated 3/21/03/16/2011

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
10/21/200928000
 Squeaking noise from engine accessory drive belts, clunking/ knocking noise at lower front of engine. the crank shift blancer split apart moving back to the engine. damage to the timing chain cover and oil pan causing oil to leak.
02/01/2008291371
 After about 2.5 years the convertible top mechanism started getting noisy and then refused to close all the way. the dealer repaired it under warranty with a new electric motor and a pump repair kit. about a year later the exact same thing happened but the dealer refused to repair it under the original warranty saying that it was a different problem. this time he replaced all the hydraulic hoses on the left side and charged me about $900.00. i feel that the problem wasn't properly repaired the first time. *tr
03/19/200520001
 Complaint received via e-mail. while driving home ,the crank bolt which holds the engine pulley, came untreated from the crankshaft. this disintegrated all three belts, and i lost the power steering. at 65 mph, this is rather an un-nerving experience! had this happened to a small woman, she might have lost control of the vehicle in the rush hour traffic. there have been at least 10 instances of the crank bolt coming out from the engine. *ak
ENGINE AND ENGINE COOLING - COOLING SYSTEM
08/01/2008570001
 Purchase a 2005 corvette in 2008. shortly after ac didn't work after working fine just moments. drove car for a half a mile or so and heard a clunking sound. pulled over and raised hood but didn't notice anything. ac still not working but car is not a daily driver and winter was approaching so not too concern. 2009 this year decided to get ac checked for the summer.....the ac clutch was missing. hindsite the clunking sound i heard a year ago was the ac clutch falling off! unacceptable for any car. *tr
ENGINE AND ENGINE COOLING - COOLING SYSTEM - HOSE
09/16/200620419109/22/2004
 Potential loss of coolant, engine overheat, loss of visibility- inspecting under the hood during oil change, i found the coolant air bleed hose rubbing through on the bottom corner of the mass air flow sensor. i twisted hose away and placed a plastic conduit over the hose in this area. this is the small hose (8mm id)left of the throttle body leading forward to the coolant lines leading to the surge tank. hose will be replaced soon. *jb
ENGINE AND ENGINE COOLING - ENGINE
01/20/2010452241
 2005 corvette, 45,224 miles. squeaking noise from engine accessory drive belts, clunking/ knocking noise at lower front of engine. found crankshaft balancer retaining bolt backed out, crankshaft balancer moving forward. had this bolt come out further, it would have damaged the steering rack, accessory belts coming off, loss of power steering, electrical, braking. this issue is known by gm/chevrolet, tsb 05-06-01-001d. vehicle was flat bed towed to dealer, they denied that there was a problem with the bolt, it just needed new belts. after threatening the dealer & gm with a lawsuit if the pulley came off and resulted in property damage or bodily injury, they would replace the pulley with the upgraded one & a new bolt per the tsb, but at customer expense. repairs completed 2/10/2010. this vehicle was within the vin number range for the tsb, but the dealer was more concerned where the paper copy of gm tsb 05-06-01-001d came from- this is public information. please- make this issue a formal recall before someone gets hurt. nhtsa database shows at least 6 similar incidents, many others have not been reported to nhtsa. *tr
11/29/200937000
 Tl* the contact owns a 2005 chevrolet corvette. the main pulley under the vehicle was unstable. the vehicle was taken to the dealer for inspection. the technician stated that because there were no associated recalls, he was responsible for the cost of the repair. the failure mileage was 37,000.
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
06/22/20059495108/26/2004
 On june 22, 2005 while driving at highway speed my '05 covette lost its serpentine belt causing the car to lose pwer steering, engine oil and coolent. with the loss or steering the car became hard to steer and manuver. this problem has been know by chevrolet that a specific bolt was not placed correctly during manufacturing and causes the loss of the serpentine belt. this was a scary event to lose steering at 60mph with a passenger during the ending of rush hour traffic on hwy114 at 6pm. the repair is taking place now involving a new diamond washer and proper torquing of the bolt. possible engine damage may have occured and the reliability of the vehicle is now in question. in some occurances the problem has happened again. i don't want it to be me and have an accident.
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE - BELTS AND ASSOCIATED PULLEYS
07/26/200613900212/24/2004
 My brother suggested i report that the engine in my car's front pulley comes loose and falls off causing loss of electrical production, a/c, and worst of all power steering--its a corvette-dont know if it happens a lot to others also but maybe you want to look into it-seems to be a dangerous situation. *nm
11/27/2004711/02/2004
 Dt: the contact owns a 2005 chevy corvette. on november 27 2004 the vehicle would not let them get into the car and the alarm would not go off. also, the computer in the car would tell them that there was no tire pressure and the tires were on the vehicle and the computer stated there was no psi. they had to climb into the hatch to open the door because the door would not open with the key. on april 5, 2005 the dealership replaced the battery and it did correct the problem until april 12,2005 at that time the vehicle was towed back to the dealership and they stated basically it was the battery and the electrical system same type of problem again this time. april 16, 2005 the vehicle had to be jumped started. on april 20, 2005 the vehicle was towed to the dealership because they could not get into the vehicle, the battery voltage was showing zero, and the psi on three tires were showing that they did not have tires on the vehicle. on may 23, 2005 with only 2700 miles on the vehicle while driving down the highway the serpentine belt broke, it over heated, the engine had blew and the vehicle had to be towed. around july 3rd or 4th with less than 3000 miles, the vehicle would not shift correctly and it would automatically stop because it would come out of cruise control, the computer would give them strange error messages. when they arrived to the dealership that is when the hatch on the back had came open by it self and it had happened twice before this but they thought they had maybe accidentally opened it. on july 12, 2005 the vehicle was picked up from the dealership the passenger driver side window molding was messed up. the contact told them to keep the vehicle until it was fixed. they have noticed numerous complaints on the nhtsa website with the same type of problems. also, on the vehicle they have been unable to put a full fuel tank of gasoline in the vehicle since date of purchase. service invoices are available if needed. *nm
03/23/20051486102/17/2005
 Driving new 2005 corvette (1486 total miles on car) in shopping district at 35mph. heard slapping sound from under the hood. pulled over and found that one of the underhood engine belts was shredding. was aware of a manufacturers technical service bulletin (05-06-01-001a - feb 8, 2005), therefore thought immediately that the problem this tsb addresses was the problem. the occurrance was uneventfull, as i was driving very slowly, however if it had been at highway speeds this could have resulted in loss of control and broken fluid lines under the hood. engine was disabled. car was flat-bedded to local chevrolet dealer where it will be repaired.*ak
11/15/20041
 Seven to eight thousand chevrolet corvettes built in late 2004 are in a batch being watched by gm because there have been dozens of instances of the crank shaft pulley belt backing out and allowing the pulley to loosen or fall off. when that happens the car looses power steering and the rest of the functions run off the belts. the belt and pulley can also cause other damage under the hood. production nuber corvettes from over three thousand to over eleven thousand are in the group identified as problematic. chevrolet has realease a technical service bulletin, tsb number (05-06-01-001a), but says it can not help buyers until after a failure. i own a corvette in that group, and i fear that i can't trust the car to perform safely. i belong to several corvette related internet forums, and i get reports of new failures every day. there are dozens of failures reported by members of just one forum. the failures have been occurring since november, 2004. gm is obviously not going to fix this safety problem without nhtsa inquiry, and i'd like nhtsa to ask gm to get serious about protecting the lives of their purchasers. spontaneous loss of steer assist and fluid loss is a safety issue - in my opinion. will nhtsa look into this situation before someone dies, please? *ak
11/30/2004300111/28/2004
 Complaint received via e-mail. my 3 day old corvette shredded its serpentine belt, overheated, and lost its steering. car had 300 miles on it. from what i have been reading on 'corvette forum this was not an isolated incident but has been occurring in too many new corvettes. this problem could affect the operation of the vehicle as it not only affected the cooling system but more importantly the steering and braking. to make matters worse the repair of this problem was failing on many cars, and they were experiencing it for the second and third time. *ak. *ak
10/24/2004120210/23/2004
 (1) purchased car 10/23/2004. (2) on 10/24/2004, less than 24 hours after purchasing the car, the crank pulley came loose and the car threw its serpentine belt (learned after the incident) while driving on a crowded interstate. the first indication of a problem was when the driver information console (dic) displayed a malfunction with the vehicles charging system that needed service. voltage displayed on dic dropped quickly in .1 volt increments until roughly 11 volts were displayed. then, the car became increasingly unresponsive to driver input for steering and throttle. brakes felt mushy but continued to respond to driver input. although the dash displayed a frightening number of error messages and alarms, the occupants had no idea what was the matter with the vehicle. trying to cross 5 lanes of packed freeway traffic to get to a safe break down area, in a car that appears to have lost its mind and is spraying antifreeze all over the highway, could have easily resulted in injury or death. we were very fortunate that we did not cause an accident. 3) vehicle was repaired at ourisman chevrolet in marlow heights, md. crank pulley, bolt(s), serpentine belt, and underhood insulation (damaged by flying belt) were replaced. a friction washer was added behind the crank pulley on the advice of gm tech support. *car broke down again with the same problem on 13 november. car is now at radley chevrolet in fredericksburg, va. gm has ordered the motor replaced and the dealer is awaiting parts. this is not an isolated failure, there are other ls2 engines breaking down because of this crank pulley problem.*ak