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Professional Automotive Repair Technical Discussions for March 29, 2011 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1995 Buick Park Avenue 3.8L Poor Fuel Economy VIN: 1G4CW52K0S Diagnose any of the mentioned codes and come up with bad ECM replaced the ECM and all the same symtoms and codes. Scan data shows a bad Quad Driver 1. Disconnected and checked all wiring to the ECM and sensors/actuators from the ECM and all check fine. I can g... Trouble codes: P0703, P0501, P1361, P0101, P0705 |
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| 1995 Buick Park Avenue 3.8L Misfire VIN: 1G4CW52K1S Hi All, this Park ave misses and pops back through the intake on acceleration. There is NO Check Engine light on, but it works during key on bulb check and a total of 19 DTC's in current codes, none in history codes. Cleared codes and they all came back. p0703... Trouble codes: P0703 (brake sw ckt), P0501, P0755 (shift solenoid B fault), P1361 (ign control signal not toggling), P0101 (mass air flow sensor circuit), P1619 (engine oil life reset switch circuit) |
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| 2000 Buick LeSabre Custom 3.8L door locks windows no start fuel gauge inop volt l VIN: 1G4HP54KOY car ame to us as no start door locks inop windows inop trunk realease,gas gauge inop,volt lite on trans slector reads drive when in park |
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| 2000 Chevrolet Silverado 1500 4.3L Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 1GCEC14W3Y Vehicle came in for PM.Coolant was discovered in oil. Intake gaskets were replaced, On the initial test drive the vehicle ran good but started to degrade shortly afterwards. Technician found the distributor one tooth off and retimed distributor. Now we are fin... Trouble codes: P0339 |
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| 2006 Chevrolet C4500 Kodiak C4C042 6.6L MIL Lamp on VIN: 1GBE4E1296 Has this code, pulled pcm connector and grounded pin 16 and the light comes on, it is not being commanded, my question is before pulling the plug on the pcm could a glow plug or something to that effect cause this issue not allowing the pcm to turn the light o... Trouble codes: P0381 (Glow plug heater indicator) |
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| 2007 GMC Yukon Denali 6.2L Left rear signal light VIN: 1GKFK66847 Left rear signal light only does not work (and not with hazards either). No voltage/signal to turn signal wire socket but does at park & brake, etc... ok. No codes and scanner shows signal/operation from switch from BCM. Connectors all appear fine. Left sig... |
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| 1947 Oldsmobile 98 257CID start system wiring VIN: 000847280H I need a wiring diagram for this vintage 1947 Olds. The customer just replaced the starter and since replacing, the starter will stay engaged if all the wiring is connected. What we have are 2 small wires that attach to the backside of the solenoid. One excite... |
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| 2003 Pontiac Grand Prix GT 3.8L Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G2WP52K83 This car has been to a couple of different shops they installed new spark plugs a new throttle position sensor that did not fix his problem.we have done a fuel pressure test as well as a volume test verified a compression test also tested ignition module and a... Trouble codes: P0300 |
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| 2006 Pontiac G6 3.5L shift interlock VIN: 1G2ZG558X6 Car will go for three days with no problem, then he come out from work to leave it won't come out of park. After 5 - 10 minutes of trying it will work ok for 3-5 days, then happens again. I have replaced the brake light switch 2x, the brake pedal position sens... |
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| 2002 Saturn Vue 3.0L wrench lite VIN: 56ZCZ63B62 does any one know how to turn off the wrench lite not the mil lite |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2004 Buick LeSabre Custom 3.8L No Start VIN: 1234567890 Though I am waiting for a part and have not yet actually heard this vehicle run, I am confident we have found the problem and it will fire up without issue. First of all, thank you all for taking the time to try and help us out on this one. I really apprecia... |
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| 1998 Cadillac Seville STS 4.6L head gaskets VIN: 1G6KY5498X Thanks to all of you for your time and professional information. The Cadillac was from a used car dealer and he was overwhelmed with the amount of time/money (looking for cheap) need to repair properly. We now know that any repair to this kind of engine will n... |
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| 1994 Chevrolet C1500 Cheyenne 5.7L Volt Guage VIN: 2GTEC19K4R Sorry for the long Delay guys I have been super busy! Turns out the grounds were all okay. I ran new ground to the battery anf the problem was still their. I also had the cluster rebuilt and it helped. I had a master tech from GM tell me that this problem ... |
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| 2000 Chevrolet School Bus Chassis B7T042 7.4L No Start, part time no start VIN: 1GBL7T100Y Thanks to all who took time to respond to our request for help. Most of the replies centered on a fuel pump problem causing low fuel pressure. We deadheaded the fuel pump and were able to get 80 lbs. of pressure. With 80 lbs. of fuel pressure the engine wou... |
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| 2002 Chevrolet Tracker LT 2.5L Engine VIN: 2CNBJ34626 AFTER CONSULTING WITH THE CUSTOMER, WE DECIDED TO REMOVE THE TIMING COVER FOR INSPECTION. WHAT WE FOUND WAS A VERY CLEAN ENGINE WITH NO VISIBLE SIGNS OF WEAR ON ANY INTERNALLY DRIVEN COMPONENT, WITH THE EXCEPTION OF OIL PUMP CHAIN WAS SLACK. WE ADJUSTED THE GU... |
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| 2002 Chevrolet Impala 3.4L Hesitation VIN: 2G1WF52E62 Kirk hit it, turns out this had a chinese dampner on it and the reluctor was pressed on in the wrong position. I put a used original GM along side the chinese junk and it was 10 degrees off at the reluctor but the rubber had not spun or it sure did not look li... |
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| 2004 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC52F94 After I wrote my help request, the car wouldn't start the next morning at my house to go to work (38 degrees).Car cranks over every time but won't start. I looked to see if there was a flashing security light while I cranked it and there wasn't any. Got my he... |
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| 2006 Chevrolet Cobalt LS 2.2L trans shifting VIN: 1G1AK15F76 ok guys i think this one is fixed,what we did was load the batt.w/carbon pile(light load)and put volt meter on alt.output terminal,as it ran the out put went lower and lower,so we put on a new alt.so far has'nt been back,thanks to all that replied all were goo... Trouble codes: B1480 (batt.run down protect curcuit), B1517 (batt voltage out of range), U2106 (lost com.w/trans control system). |
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| 2005 GMC Sierra 3500 SLE 6.6L Mechanical VIN: 1GCHK29295 well sorry about the wait the truck has beed on the road for a few weeks and all is well i went to the c gaskets and the only issue i had was getting the intake crossover pipe to fit i had a fellow tech. stand on it and it fit right in if anyone is doing alot ... |
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| 2002 Saturn Vue 3.0L No Start VIN: 5GZCZ63B62 thanks everyone that replied it was a bad ecm swapped it out runs great thank again for your help |
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