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Professional Automotive Repair Technical Discussions for July 27, 2007 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1990 Buick Regal 3.1L No Start VIN: 2G4WB14T3L Please help with this older model vehicle-it was towed in due to cranks but no start-has fuel pressure & spark but no injector pulse.Snap On scanner showed rpm @ cranking to be 200=250 rpm.attempted ecm & ignition module replacement with no change.also replace... |
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| 1994 Cadillac Seville SLS 4.6L Poor Idle Quality VIN: 1G6KS52Y1R see related repair history Trouble codes: 27 (Throttle Switch Circut Failure) |
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| 1997 Cadillac DeVille 4.6L battery VIN: 1G6KD54Y6V please help!!!My tech and i are going bald with this one.I have been scoping out fellow members input on related symptoms.(ed zandee) due to very similiar symptoms,pzm will not power down, data in pzm shows ign switch in acc. position with key off and removed.... |
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| 1994 Chevrolet G30 Chevy Van 5.7L power steering pump VIN: 1GBJG31KXR thank you in advance for all who can help!!! we have a 1994 C30 chevy van that has been converted into a motor home. van came in with a noisy power steering pump, the pump makes the same noise as it would if it had no fluid in it. it is important to mention t... |
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| 1997 Chevrolet Cavalier LS 2.4L Hesitation, Stall, MIL Lamp on VIN: 4G1JF32TXV This car has 2 concerns and I don't think they are related but I may be wrong. First it has a PO401A code for insufficient EGR flow I removed the egr valve and cleaned the passages but the light came back on after a short drive. The second problem is the car d... |
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| 1998 Chevrolet C1500 Cheyenne 5.7L No Start VIN: 2GCEC19R5W This truck came in as a no start after hot soak. We scanned it no codes. Ran truck for an hour let it set for an hour and it would not start. Tested fuel pressure it is 65 psi while cranking. Had good spark while cranking but no injection pulse. Had ignition v... |
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| 2001 Chevrolet Malibu 3.1L Upper Intake Manifold VIN: 1G1ND52J31 Dear Sirs, This vehicle has a 3.1 L V6. I am resealing the upper and lower intake manifolds, to solve an external coolant leak. I resealed the lower intake, and reassembled. On reassembly, the upper intake manifold cracked at the (passengers side)left, rear bo... |
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| 2003 Chevrolet Astro 4.3L alternator VIN: 1GNDM19X33 i have a 2003 chevy astro with a no charging condition i have replaced 3 alternators in this van with no luck so i replaced it with an ac delco unit and still no luck we then replaced the pcm and still no luck i then wired the brown and gray wires from alterna... |
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| 1997 Geo Metro LSi 1.3L No Start, Cuts out VIN: 2C1MR5295V After replace ECU, car has spark & inj. signal just when 1st crank only,lost signal if continiously crank. Try old ECU back, no signal at all. Any suggestion, I really appreciate. Thanks a million. |
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| 1995 GMC Jimmy SL 4.3L No Vent Up Hills VIN: 1GKDT13W8S When going up hills,the AC only comes out the defroster. |
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| 2001 Oldsmobile Aurora 3.5L compressor VIN: 1G3GR64H81 Car came in not cooling well, we low side 60 high 200 and the low side would start comming up with rpm's. High side did not do much. Installed a new (GM) compressor flushed the system new accumulator and orfice device (2 stage electronic) and still have basica... |
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| 1995 Pontiac Grand Prix SE 3.1L Cuts out VIN: 1G2WJ52M2S This car cuts out under load hot or cold. It doesn't matter what road speed is, but engine RPM is usually over 2000. The heavier the load, the sooner it cuts out. Fuel pressure is good at 40 lbs and doesn't drop. Making it run rich by disconnecting CTS has no ... |
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| 2000 Pontiac Grand Am SE 2.4L Engine VIN: 1G2NF52T3Y I have a 2000 Pontiac Grand AM Auto trans with a 2.4L that needs the engine replaced. I also have access to a 1997 Oldsmobile Achieva with a 2.4L and Auto trans with a good engine. I have found that the specific Long blocks for the 2 vehicles have different pa... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1999 Cadillac DeVille 4.6L engine VIN: 1G6KD54Y4X Thanks to everyone for the info. The torque specs were true but upon compleation a strange noise developed from the motor that got me worring. It turned out to be the alternator fins scraping the housing because the armature was loose and I suspect that that m... |
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| 1968 Chevrolet Corvette CID wipers VIN: 025194678S Thanks to all that replied, the wiring diagram and info that I needed was best provided by Steve [...] and Ted(from Texas) all others were good info, but I was able to wire the wiper system without any problems with their input. Again thanks to all that took t... |
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| 1991 Chevrolet Corvette 5.7L Hood Hey guys the information that was supplied was enough to lead us to order the tool as per recommendation. I may be off the island before the tool get's here so the mechanics will do the actually opening of the hood. This is certainly a done deal. |
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| 1999 Chevrolet K1500 Suburban 5.7L rear ac VIN: 1JG1231231 Thanx to all who responded. The short answer to my question is yes you can disconnect the rear ac and have front ac only. There were two main ways of doing it. One was to replace the manifold lines with ones off a front only system. The other is to block off ... |
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| 1999 Chevrolet Astro 4.3L Hesitation VIN: 1GCBGO5W3X Have to close as summary because customer declined repairs. I'm sure a MAF would have (completely) fixed the driveability problem for a few reasons. First, 4 out of 5 of you have seen these MAFs cause the symtptoms I described. Also got my hands on a heritage ... Trouble codes: P0463 (Fuel level), P0101 (maf). |
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| 2000 Chevrolet Tahoe LT 5.3L heater core VIN: 1GNEK13T4Y sorry guys for not closing this but I was out of town. What I ended up doing was replacing the heater core and the vehicle was fixed. thanks to all really appreciated the responses. |
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| 2000 Chevrolet Astro 4.3L engine cradl VIN: 1GNEL19W5Y We lost the job to another shop. I added some extra time to be safe and the insurance company did some shopping and found some one cheaper. Most thought it could be done in the alotted time. Thanks for all the great info. |
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| 2001 Geo tracker 2.5L trans VIN: 2CNBJ73482 This tracker is finally fixed! This thing has 3 output speed sensors, one that reads torque convertor,one that reads the output shaft and one on the t case to read final speed. My code was saying final output speed sensor low voltage so i was looking at the se... |
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| 1996 GMC Savana 3500 5.7L Stall VIN: 1GDJG31RXT I am going to call this fixed. It seems like the ignition coil was very intermittent causing it to run rough. It has been gone for two weeks and have not heard back from them. Jim |
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| 2003 GMC Yukon XL 1500 Denali 6.0L computer, VIN: 1GKFK66UX3 well I have done a little more diag on this truck. Got some diagrams on the electric system from the fuse box. I pulled out the relay for the fuel pump and the fuse would not blow. I used my POWER PROBE and powered up the pump through the relay, within about ... |
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| 2004 GMC C4500 Topkick C4C042 6.6L Cuts out VIN: 1GDE4C1114 THANKS IN ADVANCE FOR ALL THE TIPS I TRIED TO GET INFORMATION FROM GMC THEY WOULD NOT COOPERATE I MADE SURE ALL OIL PRESSURE SENSORS WERE WORKING COOLANT SENSORS WORKING I WAS RUNNING TRUCK WITH MY SCANNER PLUGGED IN AND I LOST THE DATA STREAM ,STARTED DOING A... Trouble codes: 0089 (fuel presure regulator). |
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| 1999 Saturn SL2 1.9L front crank seal VIN: 1G8ZJ5275X Thank you for the replies. A new oil pump and dampener fixed the problem. Our thoughts were the pump had a high pressure leak into the seal area and the drain back hole wasn't large enough to handle the volume of oil. Oil pressure was within spec. The new damp... |
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