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Professional Automotive Repair Technical Discussions for January 8, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1990 Buick Riviera Luxury 3.8L steering VIN: 1G4EZ13C6L Vehicle exhibits a substantial pull to the left. I purchased the car at a southern auction, it is a one owner vehicle in mint condition. The car has never been in an accident. All components appear perfect(ie: no rust/corrosion/deterioration etc.). We have had... |
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| 1994 Buick Roadmaster Limited 5.7L body seals VIN: 1G4BT52P6R We have this Roadmaster with a water leak under the dash on the left side of the car. We have tried everything we can think of to stop it and everytime we think its ok then the first rain, the floor is very wet. Running water around the windshield shows no lea... |
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| 1998 Buick LeSabre Custom 3.8L Interior/Exterior lights VIN: 1G4HP52K7W Hello all, I have a Buick I'm having some trouble diagnosing. The complaint is the parking lights and interior lights all begin flashing while driving down the road. When this occurs, the headlights stop working. Unfortunately, I have been unable to duplicate ... |
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| 2001 Buick Century Custom 3.1L MIL Lamp on VIN: 2G4WS52J01 The complaint was a MIL on. No driveability problems. Code P1404. Scanner (Snap-On) showed EGR position as 11% at idle. Sounds like a piece of carbon, right? Removed and cleaned valve (looked OK). Code reset. Replaced valve. Code reset. Reference 5.01V. Unplug... Trouble codes: P1404 (EGR circuit problem) |
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| 1994 Cadillac DeVille 4.6L hard start hi this caddy. came in 3 days ago for a no start ,no fuel pres.we replaced the filter and pump ac delco type.car started ok ,road tested ok.gave to cust. he took the car back late today saying it is hard starting every time .now i looked through the arcives fo... |
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| 1958 Chevrolet Impala Conve 348CID Fuel Pump Push Rod I need the length of the fuel pump push rod for this engine. I have had lots of Chev push rods in my hands but I never measured one. I cannot find specs for the length and I think I have a small block rod in this engine which does not stroke the pump far enoug... |
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| 1987 Chevrolet R30 Scottsdale 5.7L Engine - Valves VIN: 1GBHR33K0H Hello to all again, Have a gm engine that has this shop and Gopher engine rebuilders a little concerned. Installed this unit in truck 3000 miles ago [to take the place of one that was burning oil very bad] ran out good until they complained of a miss in engine... |
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| 1992 Chevrolet Corvette 5.7L check engine VIN: 1G1YY23PON i have 1992 chevrolet corette 5.7 have code 26 quad drive modele 1 faut .i did replace computer but still have same problem.i dont know where i start next could someone help me on this thanks all ur |
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| 1994 Chevrolet Camaro Z28 5.7L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 2G1FP22P3R car came in with a complaint that it would not shift out of first and it bucked wildly when trying to accelerate. tested and found 5 volt signal to tps and map dropping out to zero volts. determined that ecm was defective after testing wiring. this can happen ... Trouble codes: 22 (throttle position sensor or circuit low), 34 (map sensor or circuit low) |
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| 1995 Chevrolet K2500 Cheyenne 5.7L Surge, Misfire VIN: 1GCGK29K9S Vehicle has a loss of power under load at about 1500-2500 rpm and if you keep constant throttle will lose power to 1000 rpm and then pick up throw you in your seat and go,almost as if the fuel has shut off but if you try to drive through it. It will backfire o... |
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| 1997 Chevrolet S10 4.3L No Start VIN: 1GCCS14X3V this truck landed on me this week.turn key on blows fuse instantly.unplugged computer does not blow fuse.replaced computer now the fuse blows after 3-4 seconds.anybody seen anything like this before?has propane system,unplugged all of it and fuel pump in tank ... |
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| 1998 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNDM19W7W This van came in with customer complaining of check engine light on and running rough. I checked the codes and found a PO121 throttle position sensor code so I replaced the TPS and cleared the codes and test drove it and it ran great so I let it go. About a we... Trouble codes: P0121 |
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| 1998 Chevrolet Tahoe LS 5.7L No Start VIN: 1GNEK13R3W Hi all, this Tahoe was towed in , no start, dead battery. Someone else diagnosed faulty fuel pump. I charged battery and checked fuel pressure, 50psi. I replaced fuel pump, now have 55 psi. Truck started and ran well. 2 days later before delivery the truck wou... |
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| 2001 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 1GCEK19T01 vehicle has low power, acts like plugged exhuast. back pressure test OK. random misfire codes, cuts out. most noticable under load.changed crank sensor due to bad pattern, no change. compared sensor pattern to know good, appears to have extra spikes in pattern... Trouble codes: P0300 |
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| 2001 Chevrolet Silverado 1500 HD LS 6.0L Oil Pressure VIN: 1GCGK13U01 Customer complained of loss of oil pressure after short highway drive. I started the vehicle cold in the early AM after sitting all night -- zero oil pressure at cold (10F ambient air temp) start. After 5 minutes in the shop, the oil pressure worked it's way t... |
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| 1990 Geo Prizm GSi 1.6L Poor Idle Quality, Stall VIN: 1Y1SL5457L This vehicle came back for stalling now. It does not appear to be caused by the repairs done but customer would like to repair it. The problems are that when the cooling fan comes on it drops Rpm from a raised speed of 1100 rpm to 700 or so sometimes not the s... |
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| 2000 GMC C3500 Sierra SL 6.5L Stall VIN: 1GDKC34F9F For a challange to add to all the excitement we're having around here, I'll try and make this as brief as possible. Vehicle stalls when pull into any gear primarly cold but still stalls most of the time hot except for manual low. Go figure. Problem occured aft... |
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| 1992 Oldsmobile Bravada 4.3L No Start, Stall VIN: 1GHDT13W7N DRIVER SAYS THAT THE BRAVADA RUNS GOOD MOST OF THE TIME. SOMETIMES AT A STOP SIGN IT WILL STALL. IT STARTS UP AGAIN AND MAY RUN FINE OR IT WILL DIE IN A BLOCK OR TWO, THEN IT IS VERY HARD TO START.I HAVE CHECKED FUEL, SPARK, VACUUM, I CHECKED FOR CODES THERE W... |
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| 1997 Oldsmobile Regency 3.8L heating system VIN: 1G3HC52K3W I hope there is some out there in the Iatn world, that can help me with my little problem child. This car intermittantly has no heat on the passenger side. It has the dual zone system. I tried to check for codes, but my snap on scanner wont pull them. I suspec... |
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| 2001 Oldsmobile Silhouette Premiere 3.4L cooling fans VIN: 1GHDX12EX1 When van first came in we tested several circuits and found the fan relay, a/c relay, coolant temp sensor and thermostat were all working properly.Yet the computer was commanding the fans to stay on. It doesn't matter if the A/C is off, heater is off or even r... |
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| 1995 Pontiac Bonneville SE 3.8L no communication VIN: 1G2HX52K3S This car will not communicate with Snap On scanner. I have tried different years and OBD2 generic and get nothing. I have checked all fuses. This has a OBD2 plug under the dash but is not OBD2. I called Snap On and they told me to try a different scanner,I did... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1995 Buick Park Avenue 3.8L noise VIN: 1G4CW52K2S Had an unbeleivable number of replies to this problem. Turns out that the previous owner had the plastic plenum replaced. Found this out going through a stack of receipts that came with the car. The most popular fix for my problem was a leak around the pcv val... |
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| 1997 Cadillac Catera 3.0L prndl VIN: W06VR52R8V Replaced the transmission control module and it did not fix the problem. Apparently the condition was not present when we were testing the module inputs and outputs. The range switch was the culprit. We were finally able to catch the switch when it was malfunc... |
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| 1994 Chevrolet Astro 4.3L alternator VIN: 1GBDM19Z2R Hi Group, This van is fixed.Thanks Paul,Automxi,bilkl [...] who said check fuse links & starter connections.It was a bad connection at starter.Thought because we had power to back alt. everything was good.Repaired connection at starter & all is well, 14.5 vol... |
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| 1997 Chevrolet Blazer 4.3L Frame, body VIN: 1GNDT13W7V Well guys thanks for the replies, all of them were great. Most of you said to check the torsion bar mounts which had already been changed. The next popular reply was to check the hood hinges per a GM TSB for making noise, but that was not it either. I even bro... |
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| 1999 Chevrolet Express 3500 5.7L brakes VIN: 1GBJG31R8X Gentlemen, Big thanks for all the tremendous info that poured forth. I installed a new BMPV assy. to no avail, then got a great e-mail from a gentleman named George Sadowski who obviously had suffered through the same scenario. We then installed o.e. front &... |
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| 1999 Chevrolet Silverado 1500 5.3L shift 1-2 VIN: 2GECK19TZX this vehicle had two concerns 1 the reprogram did not fix this problem the fix was a gm bulletin for a newer 01-03 alt harness rewire putting the alt sense feed to the primary feed of alt t therefore if there are any 12 hz frequencies the alt overwelms the sig... |
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| 1997 Oldsmobile Aurora 4.0L Stall, MIL Lamp on VIN: 1G3GR62C9V HI from South Dakota I first want to thank those that responded to the concern on this vehicle. The reply that best fit the repair for this vehicle was from Stephen from Florida. Which was to check the rubber hose from air box which was in good shape as far ... Trouble codes: P0101. |
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| 1989 Pontiac Bonneville SSE 3.8L Surge VIN: 1G2HY54C3K I recieved 14 replies in all. Most were identical but one from dtparker was most in depth. His reply is as follows; 'Your iac counts indicate a small vaccum leak. normal iac counts for this application are around 20. did you relearn after cleaning the throttle... |
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| 1998 Pontiac Trans Sport Montana 3.4L Hesitation, Cuts out, Stall, Misfire VIN: 1GMDX06E2W We did find out about a connector problem in the rear of the vam for the fuel pump which will be useful in the future,Stephen [...] mentioned how the connector through the body under the rear seat has had many problems We overlooked a problem which we read in... |
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