 Prev |
Professional Automotive Repair Technical Discussions for February 26, 2004 International Automotive Technicians' Network (iATN) - Members Only |
Next  |
| (Also Available: All, Asian, Chrysler, European, Ford, GM.) | ||
| Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder. | ||
Open Help Requests for GM
| Help Request | Answers | |
| 1995 Buick Roadmaster 5.7L cruise control VIN: 1G4BR82P9S Cruise control intermittantly will gradually slow down after driving about 10 miles. I have monitored the VSS with no change indicated when it slows down. I have also check ignition voltage and set voltage and they also show no change. I tried a new engagement... |
View | |
| 1995 Buick LeSabre Custom 3.8L No Start, Cuts out VIN: 1G4HP52L5S Well here it is, we had this vehicle in a couple months ago. Customer complaint of crank but no start. We could not duplicate customer complaint. Ck. codes. P1626 & P1629 present. Indicated to customer we had to check pass key and lock cylinder. Installed part... Trouble codes: P1626 (pass key enable circuit), P1629 (pass key enable circuit) |
View | |
| 1990 Cadillac Fleetwood 4.5L starter VIN: 1G6CB5331L car came in with intermitant no starting ( starter will only click ) after initial testing of battery, charging system, and connections we decided to remove the starter and inspect the flywheel teeth which were ok. the starter would not fail by bench testing i... |
View | |
| 1996 Cadillac Seville SLS 4.6L Cuts out, MIL Lamp on VIN: 1G6K552Y2T hello fellow members. i am sure you all can be of help here. have a 1996 caddy that intermittantely will start to chuggle and cut out at speeds from 30 to 50 mph. at first did not set any trouble codes. problem seems to occur most at about 1500 rpm and all of ... Trouble codes: P1337 |
View | |
| 2000 Cadillac DeVille DTS 4.6L pistons VIN: 1G6KF5499Y Hi Caddy Techs, I own this car personally, (and have never been into NorthStar engine) It has the somewhat famous Northstar ticking- from engine. I just went out of regular warranty but have GM extended 3 years. The dealer want to pull engine and put in update... |
View | |
| 1995 Chevrolet K1500 Cheyenne 5.0L engine noise VIN: 1GCEK19H6S Hello everyone. this 305 has a squeack sound on the front on the engine like a bad belt or a weak tensioner. It is a faint sound but can be heard in the cab and more so with the hood open. But i can remove the belt and it is still there. Engine carries good oi... |
View | |
| 1997 Chevrolet Express 1500 5.7L Steering VIN: 1GBFG15R0V I have this van the customer called and said the steering would be come hard to steer backing out of driveway or resteraunt drive thru. I thought this must have a hydroboost brake assist problem. Customer brought in and it does not have a hydroboost. Running ... |
View | |
| 1998 Chevrolet C1500 Cheyenne 5.0L very rough shifts VIN: 1GCEC14M1W this truck is cherry, well maintaned. Has developed false ABS events, rough shifting, and eratic speedometer readings. We replaced the speed sensor on the trans tailshaft. Also we have checked pcm grounds and powers. The pcm gets a nice input, good pattern. Ho... |
View | |
| 1998 Chevrolet Tahoe LS 5.7L Battery VIN: 1GNEK13R8W This Tahoe is becoming a pain. You have to jump it when it sits over the weekend without driving it. If you fully charge the battery, it will take a couple of weeks before you start having problems. The battery has been replaced twice, even though the old batt... |
View | |
| 1998 Chevrolet Cavalier 2.2L oil pressure VIN: 1G1JC5243W Fellow Techs, I now have 2 Cavaliers, 2.2 liter, with oil pressure light at warm idle. I soaked oil sump with carburetor cleaner and then mineral spirits to remove possible sludge. Oil pressure has been verified to be 9lbs @ idle. Engines do not knock on co... |
View | |
| 1999 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1W152M1X Vehicle has been here a few times for check engine light. First time was catalyst code P0420. That is when the convertor and O2 sensors and tuneup was done. Vehicle left and was fine for awhile, brought back for light on again, this time it was a random misfir... Trouble codes: P0420 (Catalyst Efficiency low bank 1) |
View | |
| 2000 Chevrolet K2500 6.5L Poor Idle Quality VIN: 1GBGK24F3Y Hi gentlemen, I have a good customer with this diesel PU, that has a low idle problem. It idles at 600 rpm instead of the prescribed 800 rpm. He has had it to dealer & they told him there was nothing they could do about it. (???) Surely there is a solution! I ... |
View | |
| 2001 Chevrolet Silverado 1500 5.3L Engine VIN: 2GCEK19T21 vehicle consuming excess oil only when driving on long trips at highway speeds. aprox. 1/2 qt in 90 miles. will smoke after sitting for a few hours after long drive |
View | |
| 2002 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 16NEC13Z32 Customer called MIL on and hesitation. Brought in running good no MIL. Checked history found P0171,0174,0300. cleared history. Brought in aweek later, running fine, MIL on. Codes P0171,0174. Checked MAF, fuel pressure, vacuum leaks, usual suspects, found loose... Trouble codes: P0171 (too lean bank 1), P0174 (too lean bank 2) |
View | |
| 1991 Geo Tracker 1.6L 1-2 shift VIN: 2CNBJ18U0M This vehicle came in not shifting when cold. After it warms up, it shifts perfect. I replaced the v.b. and the modulator and also the governor. Vehicle is still not wanting to shift when cold. I can't see that anything in the clutch packs would cause this. Unl... |
View | |
| 1987 Oldsmobile Cutlass Ciera LS 3.8L Stall VIN: 1G3AJ5130H Came in as a no start with out codes-replaced ECM now starts and has code for Cam Sensor. Replaced sensor-no more codes. Vehicle intermittenely stalls but; will restart after setting 10 min and it may be fine for a couple of days. |
View | |
| 1987 Oldsmobile 98 Regency Brougham 3.8L extended crank time VIN: 1G3CW5138H hey, i have this oldsmobile that seems to crank for long periods of time before it starts. once it starts it runs good and the fuel pressure seems to be at the norm. i was wondering if -when key is on(not cranking or running) if there should be fuel pressure? ... |
View | |
| 1997 Oldsmobile Achieva S 2.4L MIL Lamp on VIN: 1G3NL52TOV Hello GM techs ,my first time writing in. I have a code po134 scanner reading 451 mv all the time. Vehicle staying in open loop all the time,coolant temp. o.k. Have a good varying voltage at o2 sensor and at pcm terminal 22. Long term fuel trim climbs up to an... Trouble codes: P0134 |
View | |
| 1991 Pontiac Grand Prix LE 3.1L Excessive Emissions, Poor Idle Quality, Surge, Cuts out, MIL Lamp on VIN: 1G2WH54T2M This car has been a problem for months. Sometimes won't idle. Now car is acting up all the time.At idle, up to TPS of .98 volts, car runs lean, o2 at o volts, iac counts to 198. Above TPS of .98 volts, it snaps right out of it, o2 comes back, iac counts down, ... Trouble codes: 31 (Map Sensor high), 44 (lean fuel) |
View | |
| 2001 Pontiac Grand Prix GT 3.8L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1G2WP52K61 HELP -- This customer don,t sit still long -- So it is drive in drive out service FUN !!! He had a SES light on we scanned it found code P1404 no other codes. He stated that it must have came on w/driving at 70 mph w/ cruise on. Checked freeze frame and his st... Trouble codes: P1404 (EGR Sol 2 Perf) |
View | |
| 2002 Pontiac Grand Am SE1 2.2L timing chain VIN: 1G2NF52F42 Car died going down the road removed timing cover plug crank motor timing chain does not move. customer said it did not have any noises before this happened has anyone seen this, will it bend the valve's. I can not find anything on Mitchell. Customer wants to ... |
View | |
| 1997 Saturn SL1 1.9L Misfire, MIL Lamp on VIN: 1G8ZH5281V vehicle was brought to our shop for mil light analysis, customer complained of no engine performance issues. initially retrieved fault code errors p0302 and p0341. upon clearing fault code information and re-road testing, only p0302 returned. attempted to scop... Trouble codes: P0302 (cylinder 2 miss-fire) |
View |
Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Cadillac DeVille 4.5L Poor Idle Quality, Hesitation, Poor Fuel Economy VIN: IG6CD133XL Thanks for all your help. Took fuel rail off, and found dirt in it . |
3 | |
| 1991 Chevrolet R1500 Suburban Silverado 5.7L Rear Brakes VIN: 1GNER16KXM Thanks for the help. We did replace the rear shoes with the softer shoes. We also did install a 1 1/16th cly. Customer has vehicle back and giving it a test run. He has not given us his comment on whether or not its fixed. |
9 | |
| 1998 Chevrolet Tracker 1.6L MIL Lamp on VIN: 2CNBE1868W not much help on this one. I stated the engine died when the valve was manually opened you would think the port was clean well guess what over half stopped up before readings on the map sensor was about 12-14in and after the readings were 25-27in when valve op... Trouble codes: 400 (Egr system malfunction). |
3 | |
| 2000 Chevrolet Astro 4.3L Power Lock VIN: 1GNEL19WXY Thank You for all support, I did find the problem short by the fuse box wire terminals. |
3 | |
| 1994 Geo Tracker 1.6L Hesitation, Over fueling VIN: 2CNBE18U5R Thanks a lot to everyone that replied. We pulled the harmonic balancer off and there was that hogged out crank key! The customer wasn't up for the correct job,(replace crank,sprocket etc.)so we welded a new key and the old sprocket to the old crank, cleaned ev... |
4 | |
| 1997 GMC K1500 Sierra SL 5.7L Interior lights,Door Locks,Rear heater On VIN: IGKFKI6R4V Hello Everyone, I figured out the problem to be a bad door switch connecter, i also was getting feedback through the brake pedal! The heater fan would quit blowing when i stepped on the brake pedal,it turns out the resister coils in the rear section of the veh... |
1 | |
| 1998 GMC C-Series Topkick C6H042 7.2L Mechanical VIN: 1GDJ6H1C3W Thank you to all who replied to my request for help sorry to waste everyone's time I was in way over my head. The newer style diesels are just as complicated as a gasoline vehicle, and I had no information to proceed with any kind of testing. Sent to cat to le... |
7 | |
| 2001 GMC Sierra 1500 SL 4.3L No Start VIN: 1GTEC14W51 Vehicle was towed to dealer. Computer was reflashed and problem was solved. Thanks for the help. |
9 | |
| 1994 Pontiac Grand Prix SE 3.1L Excessive Emissions VIN: 1G2WJ52MXR Thanks to all who posted. I took the advice of some, and ran the car on the dyno with the scanner hooked up. After awhile, the temperature would start to creep up until it would hit 235 deg. Then the car would go into open loop. Upon seeing this, we noticed th... |
4 | |
| 1994 Pontiac Grand Am SE 2.3L No Start VIN: 1G2NE53D05 Well, thanks for all the awesome suggestions from you guys out there. I got a lot of good ideas. In the end-I found some interesting things. I pulled the ECM down from under the dash and found some 'aftermarket' wiring added to it. Well, I checked what the wir... |
18 | |
| 1995 Pontiac Bonneville SE 3.8L No 3-4 shift VIN: 1G2HX52KO8 Most replies point towards sticky valves or a torque converter problem. I was told of sift kits to repair the valves or to replace the converter. I have not fixed this car due to the fact customer declined further repair. So I'm not sure as to actual problem. ... |
8 | |
| 2000 Pontiac Grand Prix GT 3.8L driver's side air bag VIN: 1G2WP52K9Y Judging from the 4 replies that this problem received, it seems that this situation with the one airbag deploying is not a common problem with any of the GMs. I gave the customer a few options and due to the high mileage of the car, they have decided to junk t... |
4 |
