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Professional Automotive Repair Technical Discussions for April 13, 2009 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2004 Cadillac CTS 3.6L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1CGDM57744 Hello. This cadillac is a good customer so I will have an opportunity to spend some quality time with the vehicle. The tune up was done just to cover the basics due to service interval. The codes p2188 and p2190 and the rough run were the original customer com... Trouble codes: P2188, P2190 |
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| 1989 Chevrolet Cavalier 2.0L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1G1JC5110K Kindly note that test equipment are scarce here in Jamaica and my stuff have not been shipped home yet. As a result I am unable to provide vacuum readings among others. Saw vehicle today with 4 ecms, 3 proms and coolant sensor on passenger floor. Got vehicle r... |
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| 1990 Chevrolet K3500 Cheyenne 7.4L Poor Idle Quality VIN: IGKGK34N6L Vehicle came in with Check Engine light on and in need of having exhaust manifold gaskets replaced. Did gasket repair, and then tackled the check engine light. Vehicle was running rough at cruise and idle, after numerous tests it was concluded that we needed a... |
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| 1994 Chevrolet K1500 Suburban Silverado 5.7L brake pedal drop VIN: 1GNFK16K7R Thanks in advance for the help. We replaced the front pads and calipers. All was fine. About 3 weeks later the right front brake grabbed a couple times, then all was o.k. again. Now (2-3 weeks later), the pedal is a little soft, and when you get about stopped ... |
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| 1998 Chevrolet C1500 Cheyenne 4.3L Surge, Cuts out VIN: 1GTEC14W5W This vehicle will run perfect for about 10 to 20 minutes and then it goes south. Starts and idles perfect all the time. I checked all the related sensor readings and found them to be well within specs. I did feel that the fuel pressure was a bit iffy, 54 to 58... |
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| 1999 Chevrolet Express 2500 5.0L No Start, hard start VIN: 1GCFG29M6X Have a hard/no start condition. Vehicle will run and restart normally after first start. Thought it was the octopus assembly (fuel injector tubes) clogging up, so I cleaned it, no change. Will start normally if a battery charger is hooked up. Computer grounds ... |
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| 2001 Chevrolet S10 2.2L MIL Lamp on VIN: 1GCCS145X1 p1441 keeps setting on this vehicle. Have followed diagnostics only to arrive at intermittent condition on chart. No other codes stored, does not have a vacuum leak through purge valve, ftp sensor is within .2v of 1.5 that is desired. The purge valve and ftp s... Trouble codes: P1441 |
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| 2001 Chevrolet Silverado 1500 4.3L Fuel Gage VIN: 1GCEC19W01 We have had 3 Tech's work on this to no avail. Every electrical connection has been cleaned and contacts checked. |
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| 2001 Chevrolet Suburban 2500 6.0L Ride control VIN: 3GNCK26U41 My customer want's to replace his shocks and would buy OE But they are on back order untill july His truck has the RTD Ride system and does any one make a kit that would turn off The service ride system light or can it be unprogramed At the dealer ? It's a nic... |
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| 2003 Chevrolet Avalanche 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEC13T23 this truck misfires at idle ,has p0300 ,on misfire screen shows #4 and #5 misfire only at idle.once the rpm in raised to about 2000 it smooth.i swaped coils,injectors,wires,plugs but,it always misfires on 4 and 5.thanks for any tips. Trouble codes: P0300 |
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| 1998 GMC C1500 Suburban 5.7L Hesitation, Surge VIN: 1GKEC16R8W all ign components new except coil no codes present. int. flutter under slight acceleration. watched misfire counter during test drive no misfires counted. replaced egr valve with known good part. no difference. Any help will be appreciated, Thanks, Al |
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| 1995 Pontiac Firebird 3.4L Cuts out, lacks power VIN: 2G2FS22S8S I have checked various components with no failures to the vehicles problem. The problem is it lacks power, if the throttle is help at wot and at around 3600rpm it will boog out like it has a clogged exhaust. I have monitored the fuel injectors and coils both v... |
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| 1999 Pontiac Grand Am SE 2.4L timing chain tenninsor VIN: 1G2NE52T6X The chain was quite and ran almost 2000 miles now has lost tenninson again. I have read of a problem with oil pumps and the relief valve sticking? also aldata shows a time 11.5 hrs. for a oil flow check valve but no procedure. Oil pump is only 4.1 it can't be ... |
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| 1999 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK527XX Greetings. This car came in for a very intermittent stalling problem and computer stored fault P0606 PCM internal processor fault. The first time it happened, we cleared codes and gave car back to customer. 3 weeks later same problem, same code, so we installe... Trouble codes: 1602 (No communication between PCM and ABS control unit) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2007 Cadillac Escalade 6.2L high idle VIN: 1GYFK63877 Thank you for the responses. I didn't have the appropriate software to reset the throttle on the new throttle assembly. I purchased the software and when i get the truck back I will give the results. |
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| 1993 Chevrolet S10 Blazer Tahoe 4.3L Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1GNCT18W3P AFTER CHECKING COMPRESSION ON ALL CYLINDERS,REMOVED HEADS AND FOUND #4 CYLINDER PISTON WOULD NOT COME ALL THE WAY UP. AFTER REMOVING ENGINE(FOR REPLACEMENT).WE TORE DOWN AND FOUND#4ROD BENT. THANKS TO EVERYONE WHO REPLIED TO THIS MESSAGE.DAVID |
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| 1996 Chevrolet Monte Carlo Z34 3.4L distributor plug VIN: 2G1WX12X5T THANKS TO ALL WHO REPLIED. THIS WAS 3.4 AND GRINDING THE CORNER OF HEAD OFF WAS NOT AND OPTION AND YOURE ALSO RIGHT THAT REMOVING THE HEAD WOULD EXCEED THE VALUE OF THE VEHICLE. I CLEANED THE TOP OF THE PLUG, USED A 2.8 DIST. GASKET AND "THE RIGHT STUFF" GASK... |
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| 1996 Chevrolet G30 Chevy Van 5.7L trans VIN: 1GDJG31K0T most techs suggested to check all the wriring because of corosion on those years being a problem.i did find alot of so so connections and took care of them.i am not sure which fix did it or if it was all of the above,but dave suggested i clear the history cod... |
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| 1996 Chevrolet K1500 Cheyenne 5.7L Hesitation VIN: 1GCEK19R2T Thanks Guys,The problem was the VCM, Alex hit it right on the [...] .The TSB solved the problem. Thank again. Trouble codes: 1122 (TPS intermitting low voltage). |
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| 1998 Chevrolet Astro 4.3L Poor Idle Quality, Misfire VIN: 1GBDM19W3W Well I have tested the cylinder leak down on cylinder 5 it was @ 45%. I took the head off to send back to the machine shop. Machine shop said everything was ok. Put cylinder head back on and still have misfire mainly in that cylinder. The shop is currently... |
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| 1999 Chevrolet C1500 Suburban 5.7L MIL Lamp on VIN: 3GNEC16R3X I replaced the NAPA EGR valve with a DELCO unit. After a few weeks of driving, I checked with the customer and he stated the check engine has not come back on at all. I'm calling this one fixed. I think the NAPA valve was no reporting back properly or was ... Trouble codes: P0404. |
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| 2004 Chevrolet Silverado 1500 5.3L oil pressure VIN: 2GCEK19TA6 THANKS FORT ALL OF THE RESPONSE FROM YOU GUYS OUT THERE. THE OIL PUMP WAS FAILED, i COULD NOT SEE A REASON FOR THE LOSS OF OIL PRESSURE. bEFORE THE PUMP WAS REPLACED, i USED A PRESSURE OILER TO VERIFY THE OIL PASSAGES IN THE BLOCK WERE FINE. i INSTALLED A NEW ... |
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| 2005 Chevrolet Cobalt LS 2.2L MIL Lamp on VIN: 1G1AL52F75 This vehicle is fixed, performed crankshaft relearn procedure w/tech2 that had updated software and Cani adaptor. All is good know, thanks to all that replied. Trouble codes: P0315. |
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| 1999 Oldsmobile Silhouette Premiere 3.4L engine VIN: 1GHDX03EXX Hi guys, I want to thank everyone that responded to my request. You helped us diag. this one on the money. We spent some time and money in checking this one out and did find a head gasket leaking at a small pin hole. Customer was tickled that we found so... |
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| 1999 Pontiac Bonneville SE 3.8L engine VIN: 1G2HX52KH2 Pretty much what happened with the car we checked it over for proper mixture. We found the oxygen sensor was not working so we replaced that. Everything else looks good on the car. We also told the customer to watch close for any issues within the next six mon... |
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| 2002 Pontiac Grand Prix GT 3.8L No Start, Hesitation, Surge, Stall, MIL Lamp on VIN: 1G2WP12K82 After driving this vehicle and checking the fuel pressure when it acted up with a gauge taped to windshield. (It was ok) I watched the MAF data on scan tool and it would freeze and then SES light would come on and set P0102 and I would check DTC status for P01... Trouble codes: P0102 (maf frequency). |
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