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Professional Automotive Repair Technical Discussions for March 19, 2010 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1994 Buick Roadmaster Estate Wagon 5.7L No Start VIN: 1G4BR82P8R Hello IATN. I have a 94 Buick RoadMaster stationwagon equiped with (OPTI-Spark) distributor system that came in for a complain of hesitation and sometimes no start but now it doesn't want to start and there is no spark after the car reached the Operating temp.... |
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| 1996 Buick Park Avenue 3.8L No Start, Misfire, MIL Lamp on VIN: 1G4CW52K1T Hi Guys, I'm in serious need of some help here!!! This might be a little long but I'm going to try and include everything. When the car came in it started and seemed to be running normal while cold. I took it for a test drive and all was well until it shifted ... Trouble codes: P0303 (3 Misfie), P0300 (Multiple Misfire) |
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| 1999 Chevrolet K3500 7.4L No Start, Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1GBJK34JXX VEHICLE WAS TOWED IN AND COMPLAINT WAS A CRANK NO START. CHECK FOR SPARK AND NO SPARK HAD 55PSI KOEO FUEL PRESSURE. CHECKED CODES... PO339 AND PO341- CRANK POSITION SENSOR OUT OF RANGE AND INTERMITTENT... i FOUND INFO ABOUT EMI INTERFERENCE CAUSE OF WIRES... ... Trouble codes: P0339 (crnk pos snsr intermittent), P0341 (crnk pos snsr out of range) |
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| 1999 Chevrolet K1500 Suburban 5.7L Stall VIN: 3GNFK16R8X hi everybody,i need help with this suburban,in the past i replaced the fuel pump for failure,problem fixed,after 3 months vehicle did not star,injection assambly wos leaking replaced it problem fixed,2 more months vehicle twice a month dies while driving,not a... |
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| 2001 Chevrolet Impala LS 3.8L MIL Lamp on VIN: 2G1WH55K21 I have a reading of 7% egr open with no symtomptons that the valve is open,flowchart says replace valve but gives no way to reset minimum voltage stored in pcm. replaceing the valve does not change the closed value. Am I spinning my wheels or is this an intern... Trouble codes: 1404 (egr closed postion incorrect) |
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| 2004 Chevrolet Silverado 2500 6.0L electric braking VIN: 2GCEK19U24 Customer bought this vehicle and complained brakes were very hard, this apparently has an electric brake system that gm had some problems with, I can't see the vehicle nor work on it as of yet as the dealer will not let customer go with it saying it's too dang... |
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| 2006 Chevrolet Silverado 1500 LS 4.3L MIL Lamp on VIN: 1GCEC14X56 this car is giving me a fit. Found the cap and rotor button had not been changed. But the truck still wants to run funny. The MAF code stays with a new MAF installed. Bank 2 is where all of the misses are occuring. Please help Trouble codes: P0101, P0171, P0300 |
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| 2002 GMC Sierra 1500 4.8L abs activation VIN: 1GCEK19V32 hi techs,I have this 02 gmc 4x4 come in with abs activation when it just almost come to a stop when steering wheel turn sharp left or right . I had clean the sensors mounting surface,and replace the abs module, same thing happen no trouble code, running out of... |
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| 2003 GMC Envoy SLE 4.2L empy light VIN: 1GKDT13S63 Hello everyone i have just put a fuel sending unit into this envoy it has a full tank of gas as soon as i started the car the empty light came on(let veicle run for 30 minits with no change) so i thot that the level senor was stuck on somthing so i dropped the... |
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| 1989 Oldsmobile Cutlass Supreme SL 3.1L Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: 1G3WS14T1K Vehicle towed in no start. checked for codes found 33 map sensor high. Tested circuit for map sensor and found bad ecm. replaced ecm and then found 5 of 6 injectors bad. replaced all 6 and got vehicle started. now i am fighting both map high codes and map low ... Trouble codes: 33 (map sensor high), 34 (map sensor low) |
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| 2004 Oldsmobile Alero GL 2.2L No Start I have a 2004 Alero with the 2.2l ecotec that will not start. It has good fuel pressure and spark, but no injector pulse. I have scanned it and it is showing a RPM signal, the CKP counter does increment and the CMP counter(calculated since this is a compressio... |
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| 2006 Pontiac Montana SV6 3.5L abs VIN: 1GMDX33196 i have this Montana van the abs light is on but no codes this is what happens you clear the codes drive the van as long as you drive the van light stays out but as soon as you stop the light comes with all wheel service to on but no codes clear the light and j... |
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| 2001 Saturn SL2 1.9L Surge, Cuts out, Stall, Misfire VIN: 1G82K52771 Hi everybody I have a saturn that is giving me trouble.It came in complaining of bucking and stalling and wanted a tune up.I felt it drop a cylinder and the check engine light was on.The 300 code was a plug wire letting spark go to ground 65k ohms put plugs an... Trouble codes: P0300 (random missfire), P0401 (EGR flow), P0410 (secondary air management), P1599 (stall detected) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1988 Chevrolet Corvette 5.7L Mechanical VIN: 1G26789012 guy who installed cam did not put se4als under the keepers replaced all seals fixed the problem |
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| 1996 Chevrolet Express 1500 5.0L MIL Lamp on VIN: 1GBFG15M1T The van is not here for us to try any more tests on. Customer was in today for regular service and claimed that the light came on again but went off. Not sure but I am thinking that the Injection system may be bad. Seems to take a long time to start after sett... Trouble codes: P1351 (Higher than normal voltage detected during cranking). |
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| 2003 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13SX3 Thank you all for your help, with your help I have determined that the cam acctuator on the exhaust cam is malfunctioning. the customer declined repairs and may never fix the vehicle, if the vehicle returns I will post any new information that we get. Trouble codes: P1345 (cmp/ckp corralation problem). |
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| 2005 Chevrolet Cobalt 2.2L unknown VIN: 1G1AK12F65 So Im closing this one due to an overwelling response sugesting replacing the power steering motor.Ill share the info the Chevy dealer shared with me today.Yes there is a recall on MOST not ALL 05-06 Cobalts and Pontiac G6's.A vin. check revealed mine will be ... |
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| 1995 GMC Yukon 5.7L Excessive Emissions, Surge, Poor Fuel Economy VIN: 1GKEK13K2S Well here i go on this yukon. The TBI i took off the suburban(SMALL BLOCK 350) did not change fuel pressure any. Have tried about everything. Has a delphi pump in there now, running 35 lbs of fuel pressure. This vehicle runs great, Block learn is near 128 +/- ... |
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| 2000 GMC Savana 3500 7.4L Poor Idle Quality, Cuts out VIN: 1GTHG35JXY The customer does not want to spend any more money on this rough idle. Here are some of the things that I found to help me and others on the next rough idle: 1. If there are no codes or misfire counters (functional tests)graph the short and long term fuel t... |
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| 2002 GMC Envoy SLT 4.2L cam actuator VIN: 1GKDT13S82 Bit the bullet and decided to pull the valve cover, followed the testing prcedure for the cam actuator in alldata, which is to scribe a mark even with head on the cam actuator face in full advance position and then another mark at full retard position by rotat... |
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| 1994 Pontiac Trans Sport 3.8L Surge, Stall, MIL Lamp on VIN: 1GMDU06L9R will close this request for know havent got van back yet.to futher check out.sorry for delay will post fix when I figure it out.I,m leaning toward wiring problem,ground circut,thanks for all replys. Darrrell [...] Trouble codes: 134 (o2 sensor circut open). |
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