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Professional Automotive Repair Technical Discussions for March 31, 2009 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1992 Buick Regal 3.8L No Start, MIL Lamp on VIN: 2G4WB14L1N car can in on a hook, has no spark. scan tool showed RPM all over the place while cranking so I changed out crank sensor. still no start and then found that readings on scan tool were jumping all over the place. injector signal will go from none to super fast.... Trouble codes: 34 (MAF sensor), 42 (EST error), 43 (EST failure) |
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| 1999 Buick Century Custom 3.1L No Start Im just about to my limit on this car, about 2 weeks ago vehicle came in for driveability concern, poor idle when hot, found clogged pcv and leaking vacuum tubes, one from pcv to intake to purge solenoid and the other from rear valve cover to intake tube. anyw... Trouble codes: 1631 (passlock password incorrect) |
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| 1999 Cadillac Seville STS 4.6L steering rack VIN: 1G6KY5496X The client came in 2 weeks ago saying that his service steering message came on and the steering wheel got hard.I checked for codes and there was none.Took the car for a ride and everything seemed fine.This morning he called and said the messge came on again a... |
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| 1989 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on VIN: 1GCD614K6K truck came in with check engine lamp on. code # 13 o2 sensor open, short, circuit problem. i replace 02 sensor with new bosh sensor. i replaced ecm as per alldata trouble tree. checked timing and fuel pressure and they were at spec. i checked engine vaccumm an... Trouble codes: 13 (o2 short open circuit open) |
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| 1995 Chevrolet C1500 5.7L Clutch VIN: 1GCEC14H35 I put a 350 in this truck in place of the 305 and cannot get the clutch to disengage. Pumping it up does not help. The old flywheel was machined, a new pressure plate, clutch disc, pilot, release bearing, clutch fork, master cylinder and slave cylinder have be... |
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| 1997 Chevrolet Blazer 4.3L fuse#10 VIN: 1GNDTELW34 Im hoping you techs out there ran into this problem before.I checked the fuses and found fuse #10 blown ecm/ign blown.Now I replaced it several times and it keeps blowing.Im just hoping to find a quick fix before I get any deeper into the wiring.Customer reall... |
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| 2000 Chevrolet Express 3500 5.7L No Start VIN: 5B4JP32R4Y Hello all, this one is driving me crazy. The truck is a delivery truck that came in a couple of weeks ago with a rod knock the owner supplied a new "crate" engine and we have replace everything on it that could be replaced. The other tech was the one who insta... |
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| 2000 Chevrolet Silverado 1500 5.3L abs VIN: 1GCEK14T1Y Hello fellow techs, have another troublesome one, 2000 k1500 pickup with abs light on, no red brake light. Can't communicate with abs module. Says no response from module. The maxi fuse underhood is fine and has power. All powers and grounds to module on frame... |
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| 2002 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Stall VIN: 1GNDT13S32 every time the ac is turned on the engine stalls even when the compressor clutch relay is removed preventing the compressor from engaging sometimes in hot soak situation with the ac off idle after restart is slow and unstable in about 10 seconds it stabilizes ... |
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| 2003 Chevrolet Malibu 3.1L oil filter VIN: 1G1ND52J43 this vehicle was towed in with a bad oil leak I topped off oil started engine to see where it was leaking and found the oil filter gasket blown out. I installed a new filter and blew the new filter |
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| 2004 Chevrolet Silverado 1500 5.3L oil pressure VIN: 2GCEK19TA6 this truck is used daily (work driver) customer complaint is: at time of start up, driver information center warned driver of low oil pressure.. he shut down engine and towed to shop. test for oil pressure with manual gauge, and o psi was recorded, i checked... |
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| 1997 Oldsmobile Aurora 4.0L Pass Key Fault VIN: 1G3GR62C7V Help!! I'm having trouble reasoning out this intermittent Pass Key Problem!! Very intermittently, this car will display "Pass Key Fault" on the drivers display, and NOT turn on the "Security" light!?! On one instance, it would not restart after shutting off. D... |
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| 1998 Oldsmobile Aurora 4.0L engine VIN: 1G3GR62C3W the car came in with an overheating problem in the city as well as on the highway. overflow hose and radiator were clogged and radiator flush was performed that solved the overheating during city driving but now still overheats at highway speed.i found that th... |
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| 1992 Pontiac Bonneville SSE 3.8L No Start VIN: 1G2HZ5219N car has very erratic injector pulse and spark even while key on after cranking engine. for about 10 seconds then clicking stops. checked grounds, ignition module bracket, ecm is coherant. i checked all the normal issues with no success. the ground under the ca... |
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| 1992 Pontiac Trans Sport 3.8L Cuts out, MIL Lamp on VIN: 1GMDU06LON ok class, this one is stumping me this trans sport cuts in & out like it looses ignition, throws code 43 after about 10 seconds run time, knock retard on scanner will go to -10 when light comes on. knock sensor is buried so i disconected at pcm (dk blue wire)n... Trouble codes: 43 (electronic spark control / knock sensor) |
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| 2000 Pontiac Grand Am SE 3.4L antitheft VIN: 1G2NF52E5Y i have this pont diving me nuts. custumer says car will not start but when it gets to shop car always starts. have returning codes b2960 and u1000 loss of class 2 comm. car back in shop today and stars right up. have had meter on pass wires but does not act up... |
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| 1997 Saturn SL2 1.9L No Start VIN: 1G8ZK5275V i have the pleasure to install a sohv engine where a dohv engine was. it starts and runs fine with 70 lbs fuel press. turn it off let it set 15 min. and it has 100 lbs fuel pressure, and wont start. bleed it off and it starts fine. the vehicle has a two fuel l... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2006 Buick LaCrosse CX 3.8L release cable VIN: 2G4WC58206 best advice: [Dan from Nebraska] If this thing ends up broken at the latch, You should be able to remove the air deflector under the bumper in front of the coolers. I don't have one sitting here but just checked a Grand Prix which has the same inner struct... |
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| 1994 Cadillac Eldorado 4.6L blower motor VIN: 1G6EL12Y7R A BIG THANKS TO EVERYONE. WITH THE INFO YOU TECHS GAVE ME I NARROWED IT TO THE BLOWER MOTOR. REPLACED THE MOTOR AND IT WORKS FINE |
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| 2003 Cadillac CTS 3.2L prnd32 led VIN: 1G6DM57N03 Thank you to all that replied. The intermittent no crank and no start was repaired by replacing the ECM. We found low voltage (under 3 volts) at the ECM terminal that runs to the PRND432 switch in the transmission (Pin 23 at ECM, OG/BK wire, circuit #1... |
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| 1983 Chevrolet El Camino 5.0L Poor Idle Quality, Cuts out VIN: 1GCCW80H9D Thank you to everyone for all the excellent replies.The problem turned out to be the mc solenoid,which was shorted.I tried cycling the solenoid and it wouldn't budge.After replacement,and some light tweaking,the vehicle ran excellent and flew through an emissi... |
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| 1999 Chevrolet Corvette 5.7L Cuts out, Stall VIN: 1G1YY32G8X first i want to thank Dave, Mark, Richard [...] and Alex for taking time to help out a fellow tech. i am happy to report that this one is fixed. mark was able to use the VIN and found that the recall had been performed and then warn. out three times after that... |
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| 2000 Chevrolet S10 4.3L readiness VIN: 1GCDT19W7Y OK ,, after reviewing the Mode 6 data I seen some out of range in evap area ,, my foreman decided to send it to the dealer ,, they Changed the Vent Solenoid . all Monitors are now ready , thus Fixed . |
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| 2000 Chevrolet Blazer LS 4.3L 2-3 Shift VIN: 1GNCS13W8Y Well as it turns out the PCM was the culprit. It was actually turning on the 1-2 solenoid but was not registering it on the scan tool. New pcm and a program and all is right with the planets again. Thank you all so much for your responses and help. Glad to see... |
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| 2001 Chevrolet Corvette 5.7L cluster VIN: 1G1YY22G01 Thank all that replied to this repair.The customer has ordered a full set (4) tire pressure monitor sensors.The GM dealer confirmed the sensors to be the fault also.We do not do ant type of tire repairs here. So a tire store will have to replace the sesors.The... |
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| 2003 Chevrolet Silverado 2500 HD 6.6L 3/4 shift VIN: 1GCHK29183 i tried the thing's other member's suggested but still having trouble with this truck,i don't have any way to check clutch pressure so i had owner take to local rebuilder to have them check,i also think they should check for any reflash to pcm. hate to get lic... |
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| 2004 Chevrolet Malibu Maxx LS 3.5L No Start VIN: 1G1ZT64844 The Ignition Switch fixed most of the codes, but the real problem was in the fuse box, located in the left rear. The terminal from the fuel pump rely to the fuel pump was over heated and spread out enough to create a intermittent no start. Thanks for the ... Trouble codes: U2108, U2109, U2111, U2105, B1380 (Ign. sw. accesary power grounded), P1626 (Pass key III). |
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| 2005 Chevrolet C5500 Kodiak C5C042 6.6L Hesitation, MIL Lamp on VIN: 1GBE5C1225 Thank you to all who replied to this post. we replaced the #7 injector and the fuel lines to it. Hopefully it will no longer be an issue. |
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| 2005 Chevrolet Silverado 1500 LS 5.3L MIL Lamp on VIN: 2GCEK13T45 THANKS FOR ALL THE HELP JUST A PROGRESS REPORT I WAS GOING TO REPLACE THE KNOCK SENSORS TODAY WITH AC DELCO BUT THE CUSTOMER CALLED YESTERDAY AND SAID THE LIGHT WENT OUT SO I'M GOING TO HAVE HIM DRIVE IT SOME MORE AND DO A MONITER CHECK NEXT WEEK. I'LL LET YO... Trouble codes: P0327. |
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| 1999 GMC Sierra 1500 SL 5.3L differential VIN: 1GTEK19T2X I did as many suggested, marked the tires drove straight for 100 feet. Tires were all very close together. I swapped a different set of tires and wheels and that helped alot. I then changed the front differential fluid with synthetic and that seemed to make it... |
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| 1999 Oldsmobile Intrigue GLS 3.5L fuel leak VIN: 1G3WX52H3X thanks to all, the dorman repair works great. no more fuel leaks part number 800-300 is a great investment |
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| 2003 Saturn L200 2.2L cylinder head VIN: 1G8JU54F13 We decided to replace the engine w/ a used one, it is quicker to replace engine then remove head and wait for machine shop to repair and close to the same cost. Thanks for the replies. Joe |
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