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Professional Automotive Repair Technical Discussions for September 30, 2008 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2000 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP54K2Y Hello, I have a intermitten misfire only on start up when engine is cold only. Replace upper intake, smoke intake system no leaks found. Substitute good know parts like EGR, MAF, Ignition module. Swapped coil, plug, plug wire and injector from cyliner 6 to cyl... Trouble codes: P0300, P0306 |
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| 2002 Cadillac Escalade 6.0L theft deterrent VIN: 1GYEK63N02 my question is as follows. can the system be reparogramed with out the tech 2. if it can what is the procedure i cannot find it on mitchell. there is a procedure on mitchell but it requires the tech 2 t oprogram. |
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| 2003 Cadillac Seville SLS 4.6L cyl. #4 VIN: 1G6KS54Y23 check engine light on. codes p0300 & p0304.found #4 spark plug carbon fouled.compression 1-8:210,190,135,105,190,195,155,195. leakdown 1-8:5%,5%,65%,65%,5%,5%,50%,5%. |
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| 1974 Chevrolet Corvette 5.7L Starting this stingray will not crank over when its warm or after running at times. pulled the center console cover and tried to jump the purple wire from the nutrel safety switch thinking that was bad, but the wire (to starter solenoid)sparks and gets hot and does not... |
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| 1994 Chevrolet S10 4.3L trans VIN: 9864787694 Working on this 94 s-10 pickup. Cant seem to pull trans out. it is out of the pilot but can't pull it away more than a few inches. I can not see it hanging up on anything. Manual says "unbolt fuel lines at manifold. This vehiche has no lines bolted to the mani... |
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| 1999 Chevrolet Tahoe LS 5.7L a/c controls VIN: 1GNEK13R1X my 1999 tahoe is driving me crazy. driving down the road the lights will go out on the a/c control panel and the air will be directed to the floor. the air conditioner will not put out cold air when this happens. a/c compressor will not work, can add ground to... |
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| 1999 Chevrolet Silverado 1500 4.8L transfer case shifting VIN: 1GCEK14V8X Hello, I have this truck that won't shift to 4hi or 4lo lights on dash indicate that it is in but trans won't go into 4x4. I've replaced all I can think of in the systwem so it shoud be working. All mechanical fuction of the transfer case and front differencia... |
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| 2002 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK23162 Came in with code for BARO and Glow Plugs. He had the injectors replaced at a dealer while on a trip and ever since then a check engine light. Replaced BARO sensor with no change. Inspected circuit again and found low reference (ground) pulled out of wiring ha... Trouble codes: P0380, P0101 |
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| 2003 Chevrolet Impala 3.4L Hesitation, Cuts out VIN: 2G1WF55E03 hi guys, this car is cutting out at about half and three quarter throttle. at full throttle the car runs fine. if i accelerate from a stop and go half throttle its like there is no fuel pressure but the pressure is fine throughout. ive scoped the tps, crank s... |
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| 2003 Chevrolet Venture LS 3.4L No Start VIN: 1GNDX03E13 Hi Techs, this van was towed in and has good fuel pressure and spark. Has code P0336,scanner shows 0 RPMS while cranking from crank sensor "A",then after several tries it will start, then code P0620 appears and battery light flashes and then security light fla... Trouble codes: P0336 (Crank sensor A), P0620 |
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| 1996 GMC Jimmy 4.3L tail gate release VIN: 1GKDT13W9T I have a dead short in #2 crttesy ckt 20anp fuse blows. rear hatch interior lites horn, rf rr lr window switch all inoperative and rer wiper out. wires in door look ok. any idea where short may be at? |
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| 2002 GMC Sierra 1500 SL 4.3L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GTEC14WX2 Thank you for taking the time to read this post. This truck started to have MIL on about a week ago, suddenly. Once MIL is displayed the shift points change and the fuel mileage drops dramatically. I did a complete tuneup last week. Cleaned injection system an... Trouble codes: P0101, P0300 |
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| 1994 Pontiac Bonneville SSE 3.8L No Start, Cuts out, Stall, Poor Fuel Economy VIN: 1G2HZ5216R Good morning guys, and apologies for the long post here. It's been awhile since I've needed to ask for help here, but i have this stumper. the car came to me, with the complaint of stalling "violently", and then sometimes not re-starting. I had the car for a... Trouble codes: P1620 (qdm4 fault), P0341 (crank/cam error), P0342 (cam sensor ckt error), P0171 (system lean) |
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| 1996 Pontiac Sunfire SE 2.2L Stall VIN: 3G2JB24XTS Hi techs, got this 96 sunfire in with a complain of stalling after long period of driving. Usually happens when rolling down to the intersection and wait for red light. It would stall and restart right away. After it happens, it needs another half a day or so ... Trouble codes: P0171 (Fuel trim too lean), P0172 (fuel trim too rich), P1133 (O2 sensor bank 1 sensor 1 not switching) |
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| 1999 Pontiac Sunfire SE 2.2L Misfire, MIL Lamp on VIN: 1G2JB1249X Hi, this is my first post.i was wondering if anyone has seen high resistance in injectors cause coil pack failures. my daughters sunfire has gone through 2 in about 5 months.it will set a random missfire code and run on 2 cylinders,replace coil pack and all is... |
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| 2000 Pontiac Montana 3.4L No Start, Cuts out, Stall, Misfire VIN: 1GMDX03EOY thanks in advance this might get a little long.started late august custumer stated van just cut out started and died a cupple times then seem ok.she then brought van to shop i test drove after it set maybe an hour van bucked once quickly and drove fine got bac... Trouble codes: P0746 (trans. pressuresol. circuit), P0446 (evap. purge) |
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| 2003 Saturn Vue 2.2L No Start VIN: 5GZCZ23D43 car came in no start cranks fine no spark no noid fuel pressure ok. no rpm signal on scanner test crank sensor good pattern.customer thinks wet problem been in driveway two wet days towed in today dry out still no start thanxs for any help. |
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| 2004 Saturn Ion-2 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G8AJ52F84 hi techs, this vehicle came to us after the owner took it to the dealer. vehicle has a very rough idle (misfiring). dealer told owner problem had to do with valves or springs, but vacuum looks good. Fuel psi= 57, the car runs great off idle, accel, and cruise.... Trouble codes: P0300 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2001 Buick Century Custom 3.1L headlamps VIN: 2G4WS52J81 I AM CALLING THIS A SUMMARY BECAUSE I DO NOT FEEL I COMPLETELY FIXED THE PROBLEM- I JUST HELPED IT. BASED ON INFORMATION IN THE REPLIES SENT TO ME AND THE FACT THAT THERE WAS AN OBVIOUS PROBLEM ON THE GROUND SIDE OF THIS CIRCUIT- I REMOVED, CLEANED AND ADDED... |
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| 1997 Cadillac Catera 3.0L Misfire, MIL Lamp on First, I would like to thank everybody that answered my request. Now, none of the spark plug wires tested bad. Ordered and replaced the coil pac,(all one unit) and cured the miss. replaced the wires as the car has 110,000 miles and the original wires. Thanks a... Trouble codes: P0304. |
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| 1977 Chevrolet Corvette 5.7L hazard, flasher VIN: 1Z37L7S445 thanks ray and james. you were correct. the flasher is supposed to be in the fuse block. as this vehicle was missing the flasher, i did not see the cavity on my initial inspection. after moving some owner installed wiring i observed a place that looked like a ... |
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| 1988 Chevrolet S10 2.5L No Start VIN: 1GCBS14E3J replaced fuel pump, next day would not start cold. This only happend in the A.M. If you started it at noon, it would fire right up. Found out it was not getting a clean spark. Replaced distributor cap and rotor, starts every time. |
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| 1990 Chevrolet Corsica LT 3.1L No Start, Cuts out VIN: 1G1LT61TXL thanks for all the replies, finally nightmare is over, when disconnected four pin connecter for injecters had good signal from ecm side,when connect it back same loosing pulse, pull plenum and checked injecters, #5 injecter only .2ohms, replaced injecter and t... |
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| 1995 Chevrolet K2500 Cheyenne 5.7L Poor Idle Quality, Stall VIN: 1GCGK29K1S IN OUR MIND WE WERE SURE WE HAD A GROUND PROBLEM,IF WE TURNED HEADLAMPS ON PROBLEM WAS MUCH MORE NOTICABLE.TRUCK WOULD STALL THE MOMENT YOU STEPPED ON BRAKE AND WHEN TURN SIGNAL WAS TURNED ON ALL THE REAR BULBS FLASHED A LITTLE.WE USED A SEPERATE GROUND TEST L... |
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| 2000 Chevrolet K3500 5.7L Starting VIN: 1GCHK33R2Y thanks everyone: wecame in this morning and tried to start the truck and away it went!!! go figure we contacted the dealer and they told us that the have had prblems with that year with the computer taking a long time to relearn when the battery has been disco... |
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| 2001 Chevrolet Silverado 1500 5.3L Cuts out, Stall VIN: 2GCEK19T81 Hey guys, The 4 replies I recieved were of help and good ideas,although I went with my gut instinct of an intermittent ign problem as the stall/recovery was so quick. A crank sensor was installed and the truck driven extensively with no reoccurance.thanx!! |
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| 1991 Geo Storm 2+2 1.6L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy VIN: J81RF236XM Success!!! Replacing the injectors has cured the RICH condition. Thanx to all who responded. I want to apologise, though. Some of my gas numbers were wrong, because I had drilled a hole upstream to test the Cat so there was a lot of Oxygen in those numbers tha... |
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| 1997 Pontiac Grand Am SE 2.4L low trac light Thanks to those who took the time to reply. I did re-check both front wheel speed sensors, harnesses and tone rings as some of you had suggested, visually and with a scan tool installed while recording. I found no reason to believe that they were faulty. The... |
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