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Professional Automotive Repair Technical Discussions for March 11, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1992 Buick Roadmaster 5.7L Vibration Have a good one here.Regular customer with well-kept Buick Roadmaster comes in with unusual problem. At highway speeds, a severe vibration is felt when the REAR windows are let down. No problem when the front windows are in any position. When travelling at hig... |
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| 1993 Buick Skylark Custom 3.3L tachometer VIN: 1G4N1154N0 After turning key on, engine on or off, tachometer will "jumps" if brake pedal is pressed. This behavior will last some seconds, while the "belts off buzzer", is on. It is interesting because it stops exactly when the buzzer stops. Very clean car. No other e... |
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| 1992 Cadillac Fleetwood 4.9L Battery VIN: 1G6CB53B4N Vehicle came in and customer complained of a dead battery. Replaced battery, testewd alternator, starter and battery draw. No drain on system found. Vehicle left and came back 2 days later with a dead battery. This time vehicle stayed for intermittant draw on ... |
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| 1981 Chevrolet El Camino 5.0L suspension VIN: 5963487924 I have seven mounts on each side, can anybody tell me the best way about how to easily do this. I also have two snaped off bolts that need to be drilled out. Counting from the front of the vehicle come back 5 mounts and these are the one that need to be drill.... |
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| 1987 Chevrolet G20 Chevy Van 5.7L Hesitation VIN: 2GBEG25H2H HI folks,Inherited a nightmare van here,engine has just been replaced had a 305,now has a 350.This van has a lean problem,block learn is at 160 cruising and 130 idling.Van seems to be under powered and at times it bogs badly on takeoff and immediately after it... Trouble codes: 44 (lean exhaust) |
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| 1991 Chevrolet S10 Blazer Tahoe 4.3L No Start, Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1GNCT18Z9M Problem only occurs on cold start up less than 30 degrees. Engine runs rough and produces black smoke like choke is on. Coolant temp sensor check ok(replaced it any way just to be sure) Terminals have plenty of drag and resistance at ECM is within .5 ohms of s... |
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| 1995 Chevrolet G20 Chevy Van 5.0L No Start, Mil Nonfunctional VIN: 1GCEG25HXS The truck dose not display the mil upon turning the key on, the bulb is good. i can not read the computer for codes with a scan tool. It says no conection present. All fueses and fusable links are good. the computer id getting power and ground.. it has strong ... |
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| 1995 Chevrolet C2500 Cheyenne 5.7L Hesitation, Misfire, Poor Fuel Economy, WOT NO POWER VIN: 1GCGC29K2S I have been working on this vehicle for 2 days and it is killing me. I have no codes and all sensors are reading and operating perfectly. It starts up and idles fine and even revs up in neutral ok. In drive, wot, it loses all power and doesn't upshift. Upon re... |
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| 1996 Chevrolet Monte Carlo Z34 3.4L Poor Idle Quality, high idle VIN: 2G1WX12X3T This (salvaged) monte carlo came in with driver complaint of "pushing thru stop signs". Found a high idle problem. Changed leaking fuel pressure regulator, cleared codes (map problem-I think it was unhooked once) and started it up. Still high idle around 2000r... |
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| 1997 Chevrolet Blazer 4.3L fuel gauge VIN: 1GNDT13W18 Fuel gauge goes from empty to full then back to half, then maybe to full or back to empty - - all over the place she says. If she gets it she wants me to fix it. Any help would be great. Thanks in advance Dan |
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| 1997 Chevrolet Camaro Z28 5.7L vacuum leak noise VIN: 2G1FP22P2V I have what appears to be a vacuum leak on cold atarts that last for a couple mins depending onm how cold it is outside goes away once warm spraying carb cleaner or propane has no effect on running car doesn't Idle high or set any codes has been goin on for we... |
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| 1997 Chevrolet S10 4.3L No Start VIN: 1GCCS14XOV the problem is the replacement pump is twice as noisy as the original pump-you can hear it while driving down the road-is this a defective fuel pump? otherwise the truck runs great except for the fuel pump noise complaint |
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| 1998 Chevrolet Malibu 3.1L unknown VIN: IGINE52MXW my customer complaint is that as he backs out of his garage slowly w/ the wheel turned fully to the right or left and going over a slight bump the brakes let go for a few seconds and then catch again, this happens at less than 5mph and only when coming out of ... |
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| 1998 Chevrolet Malibu 3.1L shift indicator,radio VIN: 1G1ND52M9W When you turn the key on the shift indicator lights up like it should and the radio also but when you start the car they both go out.I;m just woundering if this is the ignition switch causing this problem? I can also start the car without the key in the igniti... |
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| 1999 Chevrolet Lumina 3.1L Cuts out, Misfire, MIL Lamp on VIN: 2G1WL52M9X Hello everyone, I have an unhappy detective (said he can make my life miserable if I don't fix his car). Engine has an intermittent miss, MIL comes on and seems to occur when engine is cooler, (91F to 136F ECT, I know but this is Arizona). Detective takes car ... Trouble codes: P0300, P1381 (Misfire detected no EBCM/PCM serial data) |
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| 1999 Chevrolet Tahoe 5.7L MIL Lamp on VIN: 1GNEK13ROX hello, I have this Tahoe that has intermitent problem. It will go into 4WD by its self and 4WD push buttons will come on. I went to go check it when it had its problem but when I got in to the truck I stepped on the brake I heard some clicking and than it was ... Trouble codes: P0724, U1026 (Class 2 ATC) |
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| 1999 Chevrolet Silverado 1500 4.8L Poor Idle Quality, Surge, MIL Lamp on VIN: 1GCEK14V1X Hi, Thanks to all for your help and for reading my post. I have inherited this from some one else in the shop. It originally came in for a check engine light and poor run. Our other tech pulled codes and found P0171 and P0174 system lean for both sides. He fou... Trouble codes: P0171 (sysem lean), P0174 (sysem lean) |
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| 2002 Chevrolet Express 3500 5.7L cruise VIN: 1GTHG39R92 Customer complaining of cruise dropping out during long drives. Combination switch is new, had problem with signals. Of course it's not doing it for us. Has anyone run into similar symptoms and could point us in the right direction? Save us a long road trip ... |
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| 1996 Geo Prizm 1.6L RF locked up VIN: 1Y1SK5261V Hello, I need some imput from this great site. I have a Prizm that came in w/ RF wheel locked up tight. Found caliper stuck, So I replaced. All is fine, after about 10mile test drive it started dragging. Brought in and the pads were worn but I thought that the... |
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| 1993 GMC Safari 4.3L transfer VIN: 1GKEL19WOP Personal vehicle that 10000 miles ago drove perfect then developed a occasional clunk when pulling trailer on hard acceleration. after 2 trips to texas, friend returned it with severe clunking and racheting that the local chev dealer said was CV joints. well i... |
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| 2002 GMC Yukon XL K1500 6.0L shifting Good Morning, I am working on my bosses 2002 Yukon, He was driving and went to pass the car downshifted for a second then something broke and the trans freewheeled. The MIL didn't illuminate but the vehicle only has 1st and 3rd with no reverse or 2nd or 4th. ... |
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| 2002 GMC Sierra 1500 SL 5.3L temp gauge, Passlock VIN: 2GTEK19TX2 Hello group. This truck will not start the very first time you try to start it on a cool mornig. You can switch key off ,try again, and it will start everytime from then on. I have to wait 6 to 8 hrs before no start will return. If you don't turn the lock cyl ... |
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| 1995 Oldsmobile Achieva S 2.3L Hesitation VIN: 1G3NL55D18 Hello fellow techs need a little help with this olds.Sometimes this car will hesitate while accelerating for a few seconds, if you release gas pedal it will come back to life if you continue to give gas it will stall and start right back up.I tested fuel press... |
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| 1995 Pontiac Bonneville SE 3.8L Surge, Cuts out, Stall, MIL Lamp on VIN: 1G2HX52K2S car starts surging and then dies after about 5 mins of run time, kinda lost with the code po361 est line not toggling i'm using mitchell software on pc and can not find that code anywhere also checked repair manuals and still no luck. using snap-on scanner hav... Trouble codes: P0341, P0361 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1981 Chevrolet Corvette 5.7L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, runs rich VIN: 1G1AY8769B I would like to thank everyone who dusted off the cobwebs and replied back. I got several good responses. A few focused on TPS readings (.48V). I had left some details out to keep the posting a little more readable in length. William [...] nailed it; the MC... |
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| 1989 Chevrolet Beretta 2.8L Surge, Cuts out, Stall, Misfire VIN: 1G1LV14WXK Customer did not want to put any more $$ into this vehicle. It still has #5 cyl dead. I did learn there was a crank sensor replacement done about 6 months ago with a used part. I am thinking the part may have been cracked during removal from the other engine a... |
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| 1997 Chevrolet S10 LS 4.3L Hard Start VIN: 1GCDT19X6V Thank You To All Who Replied !! We Replaced The Ignition Switch And Now All Is Well. Thank You Guys For All Your Help!!! |
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| 1998 Chevrolet Blazer 4.3L 4x4 I'm closing this post as unfixed since the problem is so intermittent and a thorough visual inspection yeilded no clues. Suggestions included vacuum switch(2), encoder motor(2), modudule corrosion(1)and dash switch(1). We'll just ride this one out till we catc... |
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| 2000 Chevrolet Impala 3.4L maintenance reminder VIN: 2GIWF55EOY Got 3 rplies on this one,suggestions of alternative methods of resetting the change oil reminder.The customer has'nt been back,but I did give him the procedure to try,I have'nt heard back from him.Thanks for the help. |
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| 1998 Geo metro LSI 1.3L No Start, Misfire Tim didn't tell me what crank sensor signal looked like but sure it must have been flat. Anyway the fix was the pan gasket. Congrats Tim on becoming a member, the best tool you'll ever own. |
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| 1993 GMC C1500 Sierra 5.7L Poor Idle Quality VIN: 1GTEC14K2N thanks for all the responces. the most helful was to check the ohms on the injectors when hot it was out of range but still functioned |
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| 1997 GMC Yukon SLE 5.7L gas leak vapor cani VIN: 1GKEK13RXV Thanks to all who helped with our problem. We received 7 replies. Recommendations were replace the gas cap, not overfilling the tank, tank vent valves, checking the purge solenoid. and complete gas tank replacement. Prasanna [...] had se... |
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| 1995 Oldsmobile Cutlass Ciera 2.2L Poor Idle Quality, Misfire VIN: 1G3AJ55495 We were not given authorization for any more work to be done on this vehicle. Client came and picked the car up before we could do anymore work on it. Some of the suggestions that were given we had already done, but to no avail. |
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| 1993 Pontiac Grand Am SE 2.3L timing chain/tensioner VIN: 1G2NE5435P hi. thanks for all the information on this vehicle. checked out everything on this vehicle and couldnt find any faults. customer wanted to put the car back together with no warranty. once again thanks for all the help, sorry i couldnt give any more information... |
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| 1996 Pontiac Grand Prix SE 3.1L cooling system and crank case VIN: 1G2WJ52M1T I found that it was the intake gaskets leaking antifreeze into the oil and when the engine cooled down it created vacum in the cooling system drawing engine oil over into the antifreeze. I would like to thank all the techs for all the valuable information. Cli... |
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| 1998 Pontiac Grand Prix GTP 3.8L Misfire, MIL Lamp on VIN: 1G2WP5217W Most replies correctly identified the faulty ignition control module. Installed a new one and acceleration is back and no misfire on the misfire counters. This one was interesting in that only cylinder 3 was affected-thanks for the opinions guys. Trouble codes: P0300. |
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