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Professional Automotive Repair Technical Discussions for March 9, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2001 Cadillac Eldorado ETC 4.6L Excessive Oil Consumption VIN: 1G6ET12991 OK Caddy guys, I'm looking for some help. I've got this super clean car purchased by one of my best customers, with an oil consumption issue. Car was purchased December 03,"Certified Pre-Owned" from our local dealer with 25K on the odometer. Since the new owne... |
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| 1976 Chevrolet Corvette Stingray 5.7L fuel leaks VIN: 1Z37L6S428 help...first time post...thanks in advance...need best method for removing fuel tank from vehicle in order to find/repair leak...thanks again in advance |
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| 1990 Chevrolet Lumina 2.5L No Start, Hesitation, Surge, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on VIN: 2G1W254R6L now car starts & dies cold also if you keep your foot in it it will cut out, it will also surge & back fire though the intake for the first few blocks. it has set a lean code twice while doing this. we have found a prom up-date for a cold start problem & insta... Trouble codes: 44 (lean o2 sensor) |
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| 1994 Chevrolet G30 Chevy Van 5.7L front brakes VIN: 1GBHG31K4R This is a fleet G-30 van. the van is pulling to the right when I apply the brakes It has 4wal brake system I have bleed the EHCU and brakes 3 times. If anyone has ran across this problem before Please let me know? |
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| 1995 Chevrolet Astro CL 4.3L Poor Idle Quality VIN: 1GNEL19W7S Hello. I have a troublesome Astro that has a rough idle that fluctuates up and down. It doesn't matter if it is in park or drive. It behaves this way for a few minutes and then it will run fine for the rest of the day. It seems to have to sit overnight in orde... |
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| 1996 Chevrolet Lumina 3.1L Stall VIN: 2G1WL52M4T This engine when it is cool when you start the engine and it runs for a few seconds and it shuts of.You start the engine again and the rpms go up and down until it stalls. Took the throttle out and cleaned it,but it still the same problem.The IAC goes to cero ... |
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| 1996 Chevrolet Lumina 3.1L Poor Idle Quality, HIGH IDLE GENTALMAN, THIS WAS BROUGHT TO ME WITH A COLD IDLE PROBLEM. WHEN THIS CAR HAS SAT FOR A LONG PEROID OF TIME, WHEN STARTED THE CAR REVS AROUND 3000, AND IF CUSTOMER SHUTS OFF AND RESTARTS IT MAY OR MAY NOT DROP DOWN TO AROUND 1800, THIS CAR WILL CRUISE ALONG NI... |
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| 1997 Chevrolet Astro 4.3L engine VIN: 1GNDM19WXV I would like to hear from other shops, mechanic's that have repaired intake leaks, head gaskets on the 4.3 V-6. I had a oil sample test, done and found high amounts of iron, potassium, magnesium. Have you seen complete engine failure. I.E. Bearing damage, afte... |
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| 1998 Chevrolet Blazer 4.3L duct mode/s VIN: 1GNDT13W4W No blower air out floor ducts. Majority of HVAC air is coming out of defrost duct- with some coming out of dash vents when in floor mode. All other discharge modes seem O.K. Doesn't seem like the system is in default defrost mode as when vacuum is lost. All fo... |
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| 1999 Chevrolet K3500 7.4L No Start VIN: 1GHCK33J1X Truck intermmitently has a cranks ok,no start condition. We have yet to experience the problem to diagnose. This theft system does not have the resistor(chip) in the key. Just wanting to see if some have insight to common problems with this system before I "at... Trouble codes: P1626 (Theft system fuel enable signal lost) |
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| 2000 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY12G9Y found water intrusion in under hood tps and thought that would solve problem but it did not the pcm has been replaced. all scan data looks good the tps readings match on the scanner. the throttle actuator control has been replaced wires have been checked from ... Trouble codes: P1120, P1121, 1515 (desired and actual tps do not match), 1516 (tps circuit) |
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| 2001 Chevrolet Blazer LS 4.3L Surge, MIL Lamp on VIN: 1GNDT13W11 This Blazer will surge from 32 mph to 48 mph half throttle 2nd gear under load monitored data in graphing mode while vehicle is surging here is what I observed EGR bounces from .90v(closed) to 4.40v (wide open) MAF varies slightly O2 sensors are switching norm... Trouble codes: P0101 (maf out of range), P0404 (egr) |
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| 2002 Chevrolet Trailblazer LS 4.2L Cooling Systems VIN: 1GNDT13S02 hi every body i have this problem and i hope some body can help with this problem ,customer brought truck complain about a noise coming from under the hood and chech engine lite on .i took the truck for test drive and sound like a jet at hi speed and the code ... |
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| 2003 Chevrolet Silverado 2500 6.0L Poor Idle Quality VIN: 1GCHK29U03 Intermittently the idle will surge and drop down to 4-500rpm. and almost stall. There are no codes according to my scanner although I have not updated the scanner to 03. (I'm using 02 Data which seams to work fine.) TP% toggles 7-10% when it's running poor and... |
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| 1995 GMC Jimmy SL 4.3L Hesitation, Surge, Stall, Misfire VIN: 1GKDT13W1S Customer came in approximitly 1 year ago with a poor running, stalling, bucking hesitating condition. He had replaced the fuel pump himself and didn't cure the problem. We tested fuel pressure was and still is 55 - 60 psi. Changed the fuel filter with no notic... |
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| 1996 GMC K2500 Suburban 6.5L No Start, Cuts out, Stall VIN: 1GKGK26F7T Hello, I have a 96 Suburban with a 6.5 Turbo Diesel that intermittently will shut off while driving and will not restart right away. It happens about once every couple of weeks. There were no trouble codes in the computer. It is shutting off fuel. We tested p... |
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| 2000 GMC Sierra 1500 SL 5.3L converter VIN: 1GTEK19T3Y ALL SHIFT POINTS ARE OKAY. THERE ARE NO ABNORMAL NOISES. THE FLUID IS CLEAN AND FREE OF DEBRIS. THE TRANSMISSION HAS WHAT FEELS LIKE A TORQUE CONVERTER SHUTTER AT 40-45 MPH ON SLIGHT INCLINE WITH LIGHT ACCELERATOR PRESSURE. TCC SLIP SPEED IS LESS THAN 30 RPM. ... |
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| 1994 Oldsmobile 88 Royale 3.8L MIL Lamp on VIN: 1G3HN52L3R This car came to us with a cruise control problem, with no mention of MIL on. Cruise was repaired by replacing cruise brake pedal switch. During testing, found that P1640 Quad driver # 1 was setting. Code will set when transmission is shifted into reverse as l... Trouble codes: P1640 (Quad driver 1 TCC apply and evapcanister purge) |
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| 1989 Pontiac Bonneville SE 3.8L p1629 VIN: 1G6CD51HXK I need a lot of help with this baby. little expierence w/ anti-theft systems. [ac & engine-computer systems specialist] Vehicle has and intermittant loss of ign or fuel sytems operation. only long enough to feel reaction. never quits or fails to start. may go ... |
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| 1997 Saturn SL 1.9L Mechanical VIN: 1G8ZF528XV Hello All, I hope some Saturn Techs can help with this. This car came in with a hard down shift into 2nd or 1st. It has no problem at all running thru the gears. I can run it hard or very easy and I can upshift in all gear ok. But when I down shift into 2nd ... |
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| 2001 Saturn L300 3.0L Starting VIN: 1G8JW52RX1 Hello we have this Saturn with a questionable problem. The customer originally stated that the vehicle would not crank and sometimes it would start then die. If we pulled the key out and re installed it it would start up. The key would pull out of the lock cyl... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1995 Buick LeSabre Custom 3.8L No Start, Cuts out VIN: 1G4HP52L5S Thanks to everyone who responded to this request. We ended up putting an E.C.M. in the vehicle. With the old ecm we had a refernce voltage from the ecm to the theft deterrent module arount 1.68 v. Plugged in a reman ecm and the volage was 5.05 v. We let the cu... Trouble codes: P1626 (pass key enable circuit), P1629 (pass key enable circuit). |
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| 1998 Buick Century Custom 3.1L abs/hydrolic VIN: 2G4WS52MOW Could not find any tsb's on this problem. Replaced the modulator on a wing and a prayer, car has been driven about 50 miles, and all is well. Thanks for everyones help. Also, Wheel speed sensor code was being set by modulator, not sensor |
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| 1999 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52M6X I had pulled the injectors to check the spray pattern and do an injector balance test and everything looked good. But after all the input about a bad injector I changed it and it took care of the problem. Thanks for all the help.. Trouble codes: P0304 (Cylinder 4 misfire). |
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| 1996 Cadillac Seville SLS 4.6L Cuts out, MIL Lamp on VIN: 1G6K552Y2T good evening fellow membebs. i am happy to provide a conclusive fix for this vehicle. after scope checking and comparing cam and crank sensors between two vehicles found no particular differance. two replys to my post were suspect of crank sensors. luckily had... Trouble codes: P1337. |
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| 1988 Chevrolet S10 2.5L Stall VIN: 1GCBS14E2J Thanks to all who responded. WOW! Posted just after 5:00 p.m. last night and had 18 responses by noon today. After checking the diodes in the alternator I came to the conclusion that my problem was a fuel injector, as many people suggested. After replacing the... |
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| 1998 Chevrolet Blazer 4.3L Battery VIN: 1243MN5699 Thanks a million for all the replies! I didn't expect this many replies on this. Not a lot of respect out there for the Autozone guys. With your replies I was able to back this guy down pretty fast.Glad to know so many of you have such a good sense of humor.Ha... |
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| 1999 Geo METRO 1.3L noise VIN: 2C1MR5222X Customer chose not to spend any money on farther diagnosing . Thanks to everyone for all their replys |
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| 1990 Oldsmobile Cutlass Supreme SL 3.1L code 62 VIN: 1G3WS54T1L this vehicle will not be fixed due to the fact that the brakes are working fine and customer is tired of putting money in it over a orange intermittant abs light. we have found that if the pump stops and pressure goes low the red abs light will come on so cust... |
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| 1998 Pontiac Bonneville SE 3.8L Interior LIghts VIN: 1G2HX52K2W Thanks to everyone who offered their help. After testing and checking the lighting modules and wiring, found a short in drivers door harness. Repaired, lights now working fine. |
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| 2000 Pontiac Bonneville SSEi 3.8L Traction control VIN: 1G2HZ5417Y Well this car is fixed. We replaced the sensor and it all works. The hardest part of the job is fighting the boots for the steering shaft. Other than that, it took about 2.6 to do and test drive. Not a bad job to do. Thanks to Ken from Washington and others fo... |
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| 2001 Pontiac Grand Am GT 3.4L Fluid fill VIN: 1G2NW12E11 I want to Thank all that responded to my request, Thankyou. I located the check level plug on the right side of the trans, by the axel seal, just above the pan. Removed the plug and slowly added fluid until it dripped out the hole, with the car level and runni... |
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| 1992 Saturn SL1 1.9L 1-2 shift VIN: 1G8ZH5490N Well, I'm afraid I can't say I fixed this one, but I can say that I'm pretty sure of the cause. I got replies saying to check wiring harness leading to valve body, I got alot of replies suggesting mechanical problems inside of the transmission. I did get a rep... |
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