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Professional Automotive Repair Technical Discussions for March 26, 2007 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1988 Chevrolet K2500 Cheyenne 5.0L Cuts out VIN: 2GCFK24H7J This truck came in for an apparent ignition problem. We replaced the pick up and module ,and after re installing the distributor and setting the timing(with the bypass lead disconnected -the reason for the code 42)the problem began. After re connecting the wir... Trouble codes: 42 (est) |
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| 1989 Chevrolet K2500 Cheyenne 5.7L No Power VIN: 1GCGK24K7K Customer complaint of poor power, can barely pull itself out of mud, very slow acceleration. Inspected and adjusted timing to factory specs. Inspected fuel pressure and volume, factory specs. Removed exhaust to check for back pressure and no difference. This v... |
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| 1990 Chevrolet Corvette 5.7L Stall, starts-stalls VIN: 1G1YY2387L Hi everyone,this vehicle came in on the hook with a engine quit/stalled complaint while approaching an intersection. I first went to the car, it was about 4 blocks form my shop, and attempted to drive it to the shop. I was able to get it started, but it ran ro... |
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| 1991 Chevrolet Camaro Z28 5.0L No Start, Poor Idle Quality, Hesitation, Misfire VIN: 1G1FP33F0M This IROC has an intermittant no start after driving about 20 min. It apears that the inj pulse is insufficient, circuit tests were all good so we replaced the ecm, and the problem did not change. The only thing I can find that is not within specs is dist. ref... |
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| 2000 Chevrolet S10 2.2L compressor VIN: 1GCCS194DY This truck came in with a/c inop. Pressures stay static (65 psi) on low and high side even with compressor running. I have searched for orifice valve - but there is not one in the system. MITCHELL indicated that there may be an electronic orifice somewhere but... |
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| 2001 Chevrolet Cavalier 2.2L Reat Brakes VIN: 3G2JB52481 Hi Everyone, this car is giving me fits! The rear brakes violently grab the first few stops and after that they work perfectly. We originally replaced the rear shoes, drums(the original shoes were only 1/2 worn but the drums were egg shaped. Brakes worked fine... |
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| 2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNET16SX3 this vehicle was towed in with no power. started with the basic checks, fuel pressure ok. checked exhaust for restrictions, no restrictions. scan for codes came up with the codes lised above. checked o2 operation , operates fine. checked for misfire, no fault ... Trouble codes: P0131, P0300, P0172, P0171, P0131 |
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| 2004 Chevrolet Astro 4.3L E85 Fuel usage VIN: 1GNDM19X64 Old customer is wanting to convert his 2004 Astro to run on E85 fuel. Is it possible and what would need to be changed? |
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| 2004 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Stall VIN: 1GNDT13S64 hook up scanner and read all sensors and data information pertaining to flow chart on code po171b. no problem found at present. custmer complaint, idle problem and no accelerator responds Trouble codes: P0171 |
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| 1996 GMC Sonoma SLE 4.3L MIL Lamp on VIN: 1GTDT19X7T The SES light has come on couple times during the last 6 months. I don't have a smoke machine. When the light is cleared it stays off for a month or more. Anybody with a fairly similiar scenario. Thanks in advance for any info. Steve Trouble codes: P0442 |
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| 2001 Oldsmobile Intrigue GX 3.5L Cylinder Heads VIN: 1G3WH52H81 I've got to pull the heads off of an 01 3.5 "H" Intrigue. GM shows a whole bunch of special tools in SI. Anyone done enough of these to know what tools are really needed, which are nice to have, and which are just more GM fluff? Thanks for any replies or help. |
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| 2000 Saturn SC1 1.9L timing chain VIN: 1G8ZN1288Y Vehical is well cared for but the timing chain has broken. I can see into the spark plug holes and I see what looks very much like valve damage on the piston domes. A cylinder leakage test shows all the intake valves are not closed.(bent?) The chain appears st... |
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| 2003 Saturn L300 3.0L warning lights VIN: 1G8JW54R83 this car came to have the none emisions related warning light checked. the customer says it goes on and off. the cel also comes on at times. when i checked the car both lights were on so i tried to pull codes. i have communication but it keeps saying that ther... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2001 Cadillac DeVille 4.6L key fob VIN: 1G6KD54Y51 thanks to all that took time to read and respond. everyone agreed that programming could not be done without a tech2. we are taking to dealer to complete programming of key fob. thanks again! |
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| 1989 Chevrolet Camaro RS 5.0L Poor Idle Quality VIN: IGIFP21F1K installed new throttle return spring and adjusted tps setting.we also cleaned throttle body 2 times with bg products. thanks for all the responses. this must be a pretty common problem since we had 10 responses. thanks for the help. |
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| 1991 Chevrolet Corvette 5.7L Poor Idle Quality VIN: 1G1YY2380L It's fixed!!! Thanks to all who replied. We couldn't have done this one without you guys. We tested the injectors when the vehicle went into closed loop, and found the following. 1=6.5ohms 3=16.9 5=5.7 7=16.9 2=5.7 4=16.9 6=9.4 8=6.6 I called the customer and ... |
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| 1995 Chevrolet S10 2.2L Misfire VIN: 1GCCS1449S I would have wrote back sooner, but I had to wait for the tears to dry in my eyes. I have been working on this truck off and on for over a month with no success. My last hope was you guys, and as usual you have saved my sanity. I was able to try another comp... |
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| 1996 Chevrolet Corsica 2.2L No Start, MIL Lamp on VIN: 1G1LD5544T This one is fixed.I cleaned all the grounds and main power connections like 90% of you suggested and it fixed the cold start problem.The thing was I never tried jumping a car that cranked good and didn't start.Doesn't seem prudent as [...] senior would say. Als... Trouble codes: 0125 (insufficient coolant temp for closed loop fuel control), 0171 (system to lean bank 1), 0441 (evaporative emission control system incorrect fuel flow). |
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| 1999 Chevrolet Cavalier 2.2L long cranking times VIN: 1G1JC1243X 1st off, thanks for the speedy and accurate replies. the fix was a combination of problems. finally got car back to confirm repair. last person to cahnge fuel filter crossthreaded the nut, so they just put a rubber hose splice in. (not good w/55psi). replaced ... |
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| 2002 Chevrolet Trailblazer LS 4.2L Starting VIN: 1GNDS13S42 Morning Y'all, I am going to advise the 'GOF' (gumpy old fart) to observe the daytime running lamps the next time this occurs. I was informed that if they are not illuminated the ignition switch may have a fault. If not, it may be a possible ecm problem. If I ... |
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| 2005 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13540 This vehicel is running great and is'nt using any oil. The pump is electricly open and needs to be replaced. The plan is to replace the pump and both hoses. The cause of the oil in the pump is speculated to have come from a roll over as Jack from California su... Trouble codes: P0410. |
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| 1994 Oldsmobile 98 Regency 3.8L No Start, Cuts out, Stall, MIL Lamp on VIN: 1G3CX25LXR Thanks to those that replied. The repair turned out to be a defective TPS sensoe, that I just replaced a couple weeks prior. I replaced it and told the owner to let me know if the problem [...] exists. He hasn't called back yet so I assume it is repaired. Also... Trouble codes: P0123 (TP Sensor Circuit High). |
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