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Professional Automotive Repair Technical Discussions for February 13, 2007 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1997 Cadillac DeVille 4.6L airbag VIN: 1G6KD54Y5V Hello all we have a 97 Deville which came in with a check airbag system displayed we scanned vehicle and found B1126 - Driver Deployment Loop Open we have checked all fuses and wiring we knew of to no avail we don,t have much data availible to us at this time ... |
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| 1996 Chevrolet C1500 Cheyenne 5.7L No Start VIN: 1GCEC19R1T Hey guys, thanks for looking at this message. This vehicle died while driving and has not started since. When cranking, it kicks back and acts like a bad timing chain or crossed wires. There is good spark and fuel pressure. It pops back in the intake sometimes... Trouble codes: P1345 (Disagreement between cam and crank sensor) |
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| 1997 Chevrolet Cavalier Z24 2.4L daytime running lamps VIN: 1G1JF12T3V i hope you guys can help i have no clue. the drl indicator lamp on the dash flashes and the drl's are inop. the only fix i can find for this is a stuck relay. changed the relay and still inop i don't know these systems at all anybody run across this. all other... |
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| 1999 Chevrolet K1500 Suburban 5.7L radio VIN: 3GNEK16R7X does this vehicle really have retained accessory power, the radio stays on till you open door but battery is draining. icaught the radio coming back on again after the door is shut, i checked all the door jamb switches and when i got to the last door (left rea... |
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| 1999 Chevrolet Malibu 2.4L fuel gauge VIN: 1G1ND52TX6 The gauge stays on full then goes down to the correct reading of 1/2. During road test the gauge slowly went to "E". Fuel gauge and scanner read the same. When the sensor is disconected the fuel gauge peggs full then slowly returns to"e". Stays on E till the k... |
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| 2002 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52JX2 came in cranks ok no start. tested fuel pressure, ok tested spark- found spark at plug in 3 front cylinders cannot manage to see any injector pulse with noid light, or labscope. wtf??? |
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| 2002 Chevrolet Impala LS 3.8L Surge VIN: 2G1WH55K42 Hi, everyone I hope someone can help me,this vehicle will surg at the most about 450 rpm, it only does this when in overdrive & between 1,500 to 2,000 rpms with t.p.s. not moving at all. I have tested t.p.s. & m.a.f. sensors thay test good. I don't show any mi... |
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| 2003 Chevrolet Silverado 2500 HD 6.6L Surge, MIL Lamp on VIN: 1GCHC23103 im not familiar with 6.6 gm diesel.after investigation & basic testing of vac.pump,solinoids i found vent solinoid staying in vent position on scanner when commanded for test. sometimes closing other times not at all.possible pcm problem?solinoids work fine wh... Trouble codes: 404 (egr pressure sensor circuit.) |
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| 1999 Oldsmobile Aurora 4.0L engine VIN: 1G3GR62C3X Hi Guys,Thanks in advance for helping! I trying to determine the exact cause of this 4.0 northstar overheating. I have done alot of research on this,and realize the northstar's have a big problem with the headbolt treads in the block striping,and causing a hea... |
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| 1983 Pontiac Firebird 2.8L Poor Idle Quality VIN: 1P345H34J3 I am in real need of help, One of my guys(no longer with the company) overhauled this carburator due to a dead spot, since the overhaul the vehicle would not idle. I got fed up with the hassle and have taken on this job myself. I tore the carburator back down ... |
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| 1999 Pontiac Grand Am SE 2.4L Unknown VIN: 1G2NE12T3X This car came to me for grind noise while braking, low pedal and red brake lamp on. I found front pads gone (grind), left front caliper leaking, and fluid almost empty on master. I replaced pads, rotors, and leaking caliper, bled out the fluid at the new calip... |
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| 2003 Pontiac Grand Am SE 3.4L Horn VIN: 1G2NF52E53 I am on a ghost hunt. Please help, I have a 2003 grand am that intermittly will have the horn go off in the middle of the night. The customer states that when this happens she hits the steering wheel repeatly to get to stop. horn button tests o.k., but don't w... |
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| 1996 Saturn SC2 1.9L engine VIN: IGE25EF79D has anyone and or is it possible to remove this engine from the top...I know they usually come out the bottom ,but that inevitably screws up the use of my stall,and you know no matter how well you plan to have all the correct parts in your hot little hand ,it ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Buick Century Custom 3.3L Excessive Emissions, Surge VIN: 1G4AH54N6L Thanks to everyone who responded to my call for help. Jack from Cal. mentioned “The new cat may be coving up the true mixture'. That's all I needed to hear. It changed my way of thinking. At first I was convinced a sensor was sending a faults reading to the ... |
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| 1994 Buick LeSabre Custom 3.8L heating vents VIN: 1G4HP52L7R thanks to Al [...] and many more techs out there- sometimes the simple things get missed- removed heater hose and back flushed heater core- alot of rust came out- now heating fine- older car customer may not replace core but thats ... |
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| 1998 Buick Regal 25th Anniversary Edition 3.8L No Start VIN: 2G4WF5219W found the wiring harness to the crank sensor along the the engine to be frayed causing an intermittant no start.repaired the wires and have not had a problem since. Trouble codes: P0336 (crank sensor). |
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| 1990 Chevrolet Camaro Iroc-Z 5.7L fuel control VIN: 1G1FP2388L We have not had the opportunity to move further on this vehicle. Since the computer only operates normally with the aftermarket prom we will try another ecm. Thanks to those who responded. |
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| 1996 Chevrolet C2500 5.7L No Start VIN: 1GCGC29RX7 Thanks again everyone. The customer is happly driving their work truck!! Thanks especialy to Boyd, There was a shorted wire at the cam sensor. I repaired it and low n behold she fired right up!! |
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| 1996 Chevrolet Tahoe LS 5.7L Hesitation VIN: 1GNEK13R3T Customer declined on more diagnostic time says it will be back after taxes |
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| 2002 Chevrolet S10 4.3L No Start VIN: 1GCCS14W42 First of all thank all of you folks for your replies. Almost every one were thinking fuel contamination. I pulled the tank and sure enough there was a syrupy substance (i think a cola product)turns out the guy has bad neighbors.I guess I trusted to much in the... |
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| 1990 GMC R1500 Suburban 5.7L belts VIN: 1GKER16KOL well thanx for all the replies,after further reveiw i have rechecked everything again.found the ps pulley slide off shaft about 1/16'.pressed back on,so far so good.many replies were right on,thanx again techs. |
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| 2002 GMC Sierra 2500 HD 6.0L Unknown VIN: 1FTZR15X3W I am going to post this as a fix for now. I checked cooler flow, whigh was 1 1x2 Qts. in 20 seconds. I bypassed cooler in the radiator and flushed the trans with a complete fluid change. While I had the pan down I replaced the trans. temp. sensor. At this time... |
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| 1976 Pontiac Firebird 5.7L Hesitation VIN: 2T87M6N601 WOW!48 replies,i think i had 5 in the first ten mins.Many turned to the ignition system mostly regarding pick-up wires breaking, but it wasnt that type of hesitation, i had pulled the carb a second time for a closer look and found nothing checked fuel pressure... |
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| 2001 Pontiac Grand Am SE 2.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G2NF52T71 I would like to thank Tim [...] for pointing me in the right direction. The problem ended up being a partially stuck open IAC valve. Replaced the valve and cleaned the valve bore and noticed an immediate improvement. Thanks to all those that helped. Trouble codes: P0171 (Lean Run Condition). |
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| 2001 Pontiac Grand Am SE 2.4L Poor Idle Quality, Poor Fuel Economy VIN: 1G2NF12T81 thanks for the help.Took computer out of car to get numbers.2hr later put back in to move car. Car worked excllent all readings all back to normal. |
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