Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
SUSPENSION
300905/01/20083009H10021013Suspension vibration or frame beaming at 40 - 60 mph. *kb updated 8/25/08. *pe02/22/2007
02030700203/01/2005020307002A10014945Revised front caster and camber adjustment procedure. original not yet received. *tt05/12/2005
04031000204/01/200410012626New flexible spare tire hoist tool available to assist in lowering/removing spare tire. *tt03/08/2005
3009A3009B10008845Suspension vibration or frame beaming at 40 -60 mph. *mj08/24/2004
0031301/01/200410008867Squeak or creak noise from underbody over bumps. *mj08/24/2004
03031000609/01/200510005554Reference guide for the technician to upgrade a vehicle from factory wheels and tires to 20 inch wheels and tires, which are available through gmspo. *tt03/02/2004
0155501/01/200410005395D height specification missing from si. sit bulletin 1410632. *tt02/24/2004
03030900207/01/2007030309002B10005181Rear leaf spring slap or clunk noise (replace spring inserts) *tt updated 10/18/07. *nj02/11/2004
03031000101/01/2008030310001D10000959Tire slowly goes flat and/or excessive wheel vibration caused by bead splits (replace wheels with new heavy duty rim version) *tt *ar updated 4/11/08. *nj04/09/2003
27090109/27/2001626427Some vehicles equipped with 4-wheel drive extended cab and short bed may experience a bump or clunk on stop or acceleration. *slc12/14/2001
00031000812/01/2000623044Some customers may comment that they are unable to lower the spare tire. *tt10/25/2001
99030900310/01/19996088678Vehicles with 4l60-e automatic transmissions may exhibit vibration during acceleration from 0 - 40 km/h (0-25 mph). *tt12/29/1999
99030900208/01/1999607591Experiencing a vibration and lateral shake on smooth road surfaces. *tt09/29/1999
SUSPENSION - FRONT
0171201/01/200410006411Left front of vehicle sits low. sit bulletin 1454860. *tt05/03/2004
990308002A05/01/2004990308002B611289Front suspension coil spring noise. *tt06/01/2000
SUSPENSION - FRONT - SPRINGS - LEAF SPRING ASSEMBLY - U-BOLT, LEAF SPRING TO AXLE
334009/23/20063340C10020874Left front axle shaft difficult to remove. axle differential leak seal shaft. *kb01/25/2007
SUSPENSION - REAR
0157001/01/200410005412Spring slap noise from the rear of the gmt 400 series truck. *mn02/25/2004
SUSPENSION - REAR - SPRINGS - LEAF SPRING ASSEMBLY - U-BOLT, LEAF SPRING TO AXLE
00347A11/18/200310004123Rear spring slap or clunk noise. *tt11/19/2003

Consumer Complaints


Fail datemilesoccurencesPurchase date
SUSPENSION
08/11/1999108/10/1999
 From day one there has been a vibration in the truck at 35-45 mph and an at 70 mph.i had front end alignments,tires balance,new tires and new wheels. still have the problem.idled roughly at stop lights. two new fuel pumps in 3 months.drive seat makes a popping nosie when making a right turn.service engine soon light comes on for no reason.accelerator pedal sticks. *ak
03/02/200002/29/2000
 Vehicle has been experiencing ongoing control problems. when traveling at highway speed of 50 mph, vehicle wanders across the road and front end feels loose when driving over bumps in the road, making the vehicle difficult to control. dealer/manufacturer are aware of the unresolved problem. *ml
 While driving 55 mphe entire vehicle severly vibrates. also transmission shifts. cause unknown. please give any further details. *ak
 When driving at highway speeds there is excessive vibration in the body of the vehicle. dealer has seen and are not able to fix. *ak
07/01/1999
 Entire vehicle vibrates/shakes excessivelly at highway speeds (60-75 mph), on certain streches of road.
07/22/19991507/01/1999
 On multiple occasions the truck after traveling 6 to 10 miles at 70+ miles per hour would start to violently shake and it would not stop until you came to a complete stop. it started out doing it once a week but got progressively worse until it was doing it every day. it has been to the dealer on 8/5/99, then again the week of 8/23 through 8/27/99, and returned again 9/14/99, they called me back they could not get it to duplicate the problem. i returned to the dealer on 9/16/99 and took the service manager for a ride and just like before after traveling 7 miles at 72 miles per hour the truck began to violently shake with him being the third witness besides myself. the truck is still at the dealership as of 10/27/99 and i think it needs to be filed as a lemon under the nc general statute 20-351, so that no one else ends up with it or gets hurt or killed in an accident.
07/22/19991507/01/1999
 On multiple occasions the truck after traveling 6 to 10 miles at 70+ miles per hour would start to violently shake and it would not stop until you came to a complete stop. it started out doing it once a week. but got progressively worse until it was doing it every day. it has been to the dealer on 8/5/99, then again the week of 8/23 through 8/27/99, and returned again 9/14/99. they called me back, and they could not get it to duplicate the problem. i returned to the dealer on 9/16/99 and took the service manager for a ride. just like before after traveling 7 miles at 72 miles per hour the truck began to violently shake with him being the third witness besides myself. the truck is still at the dealership as of 10/19/99 and i think it needs to be filed as a lemon under the nc general statute 20-351, so that no one else ends up with it or gets hurt or killed in an accident. *ak
 Vehicle will vibrate and hop off the road when it is being driven at high speeds and over bumps, causing loss of control. *ak
02/05/1999
 Consumer experiences vibration when driving. whenever turning there's always squeaking in the left front and the right rear. whenever straightening out, at times there is a loud popping noise coming from the front end. consumer says it sounds like the stablizer bar in the front failed. dealer counld not stop the vibration when taken in on feb. 5, 1999. so they put new tires on feb, 26 1999, problem presists. *ak
09/02/19985
 While drving vehicle at various speeds & hit a bump, there is a severe vibration in the steering wheel. controling vehicle is difficult when this occurs. *ak
SUSPENSION - FRONT
04/01/2002
 Hen driving at 30 mph or over the vehicle will start to pull to the left, and when making a left turn vehicle will also start to make noise. *ak
07/01/2001
 At take off and at 45-55 mph front of vehicle vibrates. dealer kept vehicle once for 3 weeks, could not find a problem. consumer is taking vehicle back to dealer at this time.*ak
1
 Front suspension failed. nlm
09/01/1999
 Vibration of entire vehicle at highway speeds from day one. *ak
08/15/2000307/01/1999
 To those that could help me get gmc or randy reed gmc pontiac in kansas city, mo to fix this vibration.i have had this vibration in the truck since i drove it off the lot when it was brand new at 6 miles with a deliver miles of 23. i have taken it back to the dealer 13 times in the last 14 months and 8 out of those 13 times it was for the vibration. the dealer had put all new tires on the truck after about 3,000 miles but still could not get the vibration all the way out. it was to a point where i could stand it but i was not happy with it. the vibration comes on between 65 to 70 mph which indicates the tires. the tires are goodyear wrangler st p235/75r16 owl which is the original oem tire for that truck on that year. during the testing around the time of exchanging of all the goodyear wrangler st for exact same thing we put a set of firestone wrangler ht i believe on it and it rode perfectly smooth. on 08/15/2000 i took my truck in for a bulletin the service manager wanted to do to it to strengthen the front end on it and i got it back two days later and it rides rougher than before. i took it back on 08/29/2000 and the new service manager got involved and said he couldnt feel anything on vibration so i took him for a ride and when you go up or down a hill with the cruise control on at 65 or 67 mph you feel the vibration in the floor seat and steering wheel also the mirrors vibrate sometimes where you can not make out the vehicle lights behind you. then the service manager said it still rides smoother than my new demo with less than 600 miles on it. i believe he has those firestone wrangler something on the demo. i also talked to gmc a few times and they are to the point there is nothing they will do.i like the truck but hate the vibration and it is very frustrating on trips.the transmission also downshifts when you go over a hill with it set on 60mph and air conditioning running.they wouldn't even list this complaint when i told them about it.
08/15/20001007/01/1999
 After service department replaced several components in the front end of my 1999 gmc sierra sle xcab 2wd short box it now pulls to the left on flat highway where as it pulled to the right before the parts where installed. if there is ruts from wear in the highway then it will maintain or track them. i explained to the service manager that a 300 pound person will pull the front end alignment approximately 1 degree so it has to be right on and he said it was. well it still pulls to the left after they replaced all the parts in the front end on there bullentin for the vibration problem. the service manager tells me there is nothing more they can do for me.( dot number: m63d tire size: p235/75r16 )
02/01/1999
 Major vibration at speeds over 60, also antilock brake failure or jumping --dealer was very receptive and still is but gm seems to be ignoring this problem. *ak
08/25/1999306/01/1999
 Vehicle vibrates severely at speeds above 55. vehicle shakes when brakes are applied. dealer has advised potential problems with front hubs, rear shocks, wheels and tires. vehicle has been to dealer three (3) times since 08-25-99 for diagnosis and repair of problem, but as of 09-10-99, the problem of overall major vibration hasn't been resolved.
07/01/1999
 When the truck is in motion there is a flutter from the front near the windshild and make lots of noise. *ak
12/01/19992511/01/1999
 Abs brakes fail when you apply brakes when there is a bump in the road. i have had 14 failures in 2095 miles. the brake pedal drops down slightly and becomes solid, you can not push down anymore and the vehicle glides to a slow stop. it will not stop in an emergency in this case. the problem seems to be in the suspension and the abs brakes. the vehicle vibrates and does not recover fast when you go over a slight bump in the road. at highway speed the whole vehicle and steering wheel vibrates. the plastic hub nuts always come loose when driving.*ak
03/06/199902/01/1999
 Vehicle vibrates at highway speeds, goodyear replaced all tires, still vibrates,. twice, dealer said operating as designed *ak
02/01/1999
 Vehicle has had vibration at highway speeds since day 1. have taken it to the dealer twice. have also had all 4 tires replaced by firestone. dealer said vehicle operating as designed. *ak
1
 Since purchased vehicle experience vibration and recovers very slow from a bump in the road which is causing the anti-lock brake system to fail due to the suspension bouncing while braking . *yc
05/01/1999
 Bad vibration at highway speeds. bad vibration when hitting bumps. entire vehicle vibrates at highway speeds. had front-end alignment and tires rotated, balanced same problem. *ak
SUSPENSION - FRONT - CONTROL ARM
04/04/2000304/01/1999
 I have experienced excessive wearing of the front brakes, which has resulted in the rotors being replaced first, then the pads replaced 2 weeks later, and upon replacing the pads the new rotors required resurfacing. since then after driving approx 5k miles, i was told that the new pads are appox 40% worn. i required the right front balljoint to be replaced when the rotors were done. when applying the brakes & hitting a bump in the road, the brake pedal goes down to the floor and has a complete lose of braking. it failed the annual inspection, due to a leaking donnut gasket. the tailgate squeaks & rattles, and appears out of alignment. the front driver's door creaks requiring repeated greasing. there appears to be excessive wearing in the front end and braking system, as well as excessive creaking & noise from the rear area of the truck, tailgate, and driver's door. i have been met with continued resistance and lack of answers from both the mfg and dealer. any help or information would be appreciated.*ak
SUSPENSION - FRONT - HUB
06/28/200228178309/21/1999
 Dt: at slow speeds there is a clanking sound in the brakes, and can be felt in the brake pedal on the consumer's foot. this has been a problem since 2002. the vehicle has been in the repair shop 3 times for the same problem. the first time, the vehicle was involved in an accident in the parking lot. the owner was driving 5 mph or less and had no brake control, and the pedal was working against the driver. the owner took the vehicle back to the shop 2 more times for the same problem. gm, the manufacturer came and inspected the truck. gm would not allow the truck to be fixed by the dealership until they inspected it. the dealerships report stated that they replaced the right front hub bearing after testing and the found bearing caused unwanted abs operation during slow speeds. there were no injuries in the crash. *ak *sc
04/29/200599796204/15/2003
 Consumer states: anti-lock brake system, when applying it makes weird noise, and has to push brakes to the floor. had to do 4 times, was under 5 mph and pedal kicked back, and it grabbed. just got abs serviced and new fuse put in. had to take out fuse for the brakes to work properly. could hear whinnying noise before taking out the fuse, and light came on at the same time. dealer hooked up vehicle to diagnostic machine, replaced right front hub and bearing assembly, and still having the same problem.*ak
SUSPENSION - FRONT - SHOCK ABSORBER
10/20/2002
 When vehicles engine is shut off the abs pump continues to run, until the vehicle battery goes dead, consumer has to disconnect. cause is unknown. please provide any further information. mr
08/01/2002
 Consumer states that vehicle goes into the abs mode, when the abs are not needed. cause is unknown. please provide any further information. mr
SUSPENSION - FRONT - SPRINGS - COIL SPRINGS
09/20/19993
 There is a pop/squeak in front over bumps. replaced front coil springs.also, driver's seat sits too far/replaced right air deflector. *ak
SUSPENSION - FRONT - SPRINGS - TORSION BAR
 Vehicle is experience a rattling noise coming from front drive assembly, by the torsion bar area and steering mechanism. dealer is aware of defect , claims defect cannot be fixed. *ak
SUSPENSION - FRONT - WHEEL BEARING
04/29/200599796204/15/2003
 Consumer states: anti-lock brake system, when applying it makes weird noise, and has to push brakes to the floor. had to do 4 times, was under 5 mph and pedal kicked back, and it grabbed. just got abs serviced and new fuse put in. had to take out fuse for the brakes to work properly. could hear whinnying noise before taking out the fuse, and light came on at the same time. dealer hooked up vehicle to diagnostic machine, replaced right front hub and bearing assembly, and still having the same problem.*ak
04/10/2002
 Right front wheel lock up while driving, vehicle tow to a repairs shop and informed of a front wheel bearing failure. dealer and the manufacturer were notified. feel free to provide any further information.*ak
SUSPENSION - REAR
05/01/19997
 There is a rattle underneath the rear of the vehicle, the dealer has tried to remedy the problem by the following: changed the power steering and transfer case fluid, replaced the shock absorbers, the spare tire jack hoist, and hoses, however the problem still exists. *slc
07/01/1999
 1.) anti lock brake system seems to activate and not allow vehicle to stop nearly as quick as if there was no anti lock system. this has occurred 5 to ten times, but has not resulted in a wreck. 2.) clunking noise in rear end area - sounds line excessive backlash in rear end. *ak
 When the vehicle turns a corner or a curb on wet pavement the rear tires spin uncontrollably. the vehicle is currently at the dealership. *ak
SUSPENSION - REAR - SHOCK ABSORBER
08/25/1999306/01/1999
 Vehicle vibrates severely at speeds above 55. vehicle shakes when brakes are applied. dealer has advised potential problems with front hubs, rear shocks, wheels and tires. vehicle has been to dealer three (3) times since 08-25-99 for diagnosis and repair of problem, but as of 09-10-99, the problem of overall major vibration hasn't been resolved.
SUSPENSION - REAR - SPRINGS - LEAF SPRING ASSEMBLY - HANGER/BRACKET
11/27/199911/01/1999
 Vehicle shakes at highway speeds, rear spring hangers replaced--no effect. gmc says the 1999/2000 models all do that.*ak( dot number: tire size: p245/75r16 )