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Prev Professional Automotive Repair Technical Discussions for March 4, 2004
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2002 Buick LeSabre Custom 3.8L starter VIN: 1G4HP54K62
Need some help with this one. Car was towed in as a no start. Complaint of dead battery. Upon inspection found that the battery was not dead, but had no dash lights, radio, power windows or locks, headlights, & would not start. It did have the horn, powerr sea...
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1990 Cadillac Fleetwood 4.5L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G6CB5331L
Hi, this is the first time I ask for your help so please bear with me on this one. I have a 90 Fleetwood that came in with multiple trouble codes in memory: E016 Generator Voltage out of range E021 Shorted TPS circuit E031 shorted MAP sensor circuit E052 ECM m...
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1991 Chevrolet Corsica LT 3.1L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, ONLY AT IDLE VIN: 1G1LT53TXM
car came in dying out after 30 minutes of run time, ecm would get hot and kill injectors. changing ecm solved this problem however odor from cat and missfire prompted futher inspection and we found injector's regulator and converter bad. wires and plugs were a...
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1993 Chevrolet Astro CL 4.3L speedometer VIN: 1GNEL19W5P
HI we have an Astro that's giving us real problems. The transmission stays in 1 gear and the speedo doesn't work. We tested the speed sensor and replaced it. Then we moved on to the DRAC unit and tested the powers and grounds and they test good. But when the s...
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1997 Chevrolet S10 LS 4.3L Hard Start VIN: 1GCDT19X6V
This Truck Starts Hard Intermitently -- Fuel Pressure Is Good When Symptom Occurs -- We Have No Spark & Scanner Powers Down When Symptom Occurs. Checked Alldata To See If Vehicle Has PCM Relay - Couldn't Locate One. Acts Like A Ford PCM Relay Problem When They...
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1998 Chevrolet K2500 Cheyenne 7.4L Misfire, MIL Lamp on VIN: 1GCGK24J0W
help all you gm guru's. have a fun one here. this vehicle came in for a misfire one month ago, also long crank when cold. found the fuel pressure regulator to be leaking and tune-up needed. misfire was gone and all scan data looked ok. now its back with a veng... Trouble codes: P0301
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1999 Chevrolet Tahoe 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEK18R6X
how's everybody doing out there. here in houston it's rainning and 75 degrees. this truck came in with a miss it looked like a classic fuel pressure regulator so we replaced it. miss still there.. customer states this started all of a sudden while driving. we ... Trouble codes: 300 (random misfire), 307 (misfire on 7)
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1999 Chevrolet Express 3500 7.4L Poor Idle Quality, Misfire VIN: 1GBJG31J7X
This van came in running very rough. We replaced cap, rotor, wires, plugs and ICM with OEM parts. The crank signal and MAF signal look good with the Vantage. Fuel pressure is slightly below spec at 50 at idle. Throttle snap the FP goes to 58. Misfire counter s...
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1999 Chevrolet S10 LS 4.3L Surge VIN: 1GCCS19W5X
Hi all techs out there as it goes i have a hard one here Ive been two weeks on this any help i will be really thankful and as Fiat goes it's my dads truck so you all how that goes (thank you all for your time)
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1999 Chevrolet Silverado 1500 5.3L Driveline?
I have been fighting this one for a while. The customer states that immediatly after 2" body lift, tires and 4.56 gears front and rear, vehicle developed a vibration at approx 70 mph. I have done everything I can to repair the vibration except rebuild the tran...
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2000 Chevrolet Tahoe 5.7L steering wheel sensor VIN: 1GNEK13RXY
Hi all I got a quick question on replacing the steering wheel position sensor. Does it need to be aligned to a center position? Or can it just go on at any position? Thenew sensor does not have any alignment pin or marks that i can see GM #[...] is the sens...
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2001 Chevrolet Suburban 2500 8.1L No Start VIN: 3GNGK26G21
hello, all this one has us stumped...engine cranks but wont start cold...warm is o.k. checked for bulletins none found...after several tries, it will start and run fine. once it starts, it starts fine all day... primary fuel pump replaced...no fix...scan data ...
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1990 GMC C1500 Sierra 5.7L Brake pedal VIN: 2GTEC19K61
This is one of our employees vehicle and brake pedal wants to sink very low. It never really bottoms out on floor but sinks almost like a bad master. I pulled the master cylinder and there was a little seepage behind the master and replaced it but did not thin...
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1991 GMC C1500 Sierra SLE 5.7L Poor Idle Quality, Cuts out VIN: 2GTEC19K3M
Went for a short road test, parked the truck for the customer and as we were turning into the parking stall the engine died. But it restarted right away and ran good. Then each time we put this thing in gear it would die. Feathering the throttle "2 footing it"...
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1997 GMC Yukon SLE 5.7L gas leak vapor cani VIN: 1GKEK13RXV
Thank you for your time. This SUV is leaking gas from the vent on the vapor canister. Running or not running it leaks intermittently. I ran the functional test for the purge solenoid. The engine RPM drops when the purge duty cycle percent goes up. I saw it lea...
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1990 Oldsmobile Cutlass Supreme SL 3.1L code 62 VIN: 1G3WS54T1L
this car is driving us nuts it came in with a abs code 62 low accumulator precharge code and no matter what we do we can not get rid of the intermittant code. the brakes work fine pump motor comes on and goes off everything acts great. we replaced the accumula...
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1998 Oldsmobile Bravada 4.3L TCC Clutch VIN: 1GHDT13WXW
Let me start by saying that I have very little transmission experience. I'm trying to save a regular customer a trip to the transmission shop. The transmission on this Bravada seems to work normally until you are at a steady cruise. When your cruising at a s...
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1992 Pontiac Bonneville SE 3.8L erradic abs pump operation VIN: 1G2HY521ON
Vehicle came in with complaint of "brakes being applied at slow speeds" Turns out that for some reason the abs pump will send pressure to the front brakes, vehicle will 'chug' and 'buck' untill the traction control is disabled, then the vehicle will function p...
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1995 Pontiac Sunfire GT 2.3L No communication VIN: 3G2JD12DXS
I hope some of the GM people have seen this before.This car has "OBD11" plug under dash,but has "OBD1" emissions.Verified OBD1 emissions on VECI decal and car has only pre cat 02s.Snap On scanner will not communicate with car,also tried generic OBD11 mode.Snap...
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1996 Pontiac Firebird 3.8L keyless entry VIN: 2G2FS22K3T
One remote will not unlock the doors unless you hold the button for 15 seconds. The other remote will not unlock at all. Trunk pops okay on both. Lock works on both. How do I test these? If it needs new remotes can I program them? TIA
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1998 Pontiac Bonneville SE 3.8L Interior LIghts VIN: 1G2HX52K2W
Vehicle brought in with a dome light issue. Installed missing fuse for dome lights. After closing door or turning key on, dome lights do not go off. They will however go off after being on for like 10 minutes. BUt they will not do their normal thing of diming ...
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1999 Pontiac Sunfire GT 2.4L Poor Idle Quality, Surge, Misfire VIN: 4G2JB32T2X
hello this car misfires on light and heavy excell and also idles rough it shows misfire and then it won't.I have checked the ignition and the fuel system.the one thing that bothers me is I can make it run bad in the shop if I run the tires up to the hoist and ...
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2000 Pontiac Bonneville SSEi 3.8L Traction control VIN: 1G2HZ5417Y
Hello all, we have this 2000 Bonneville with ABS/TCS and stability package. We are getting error messages in the Driver Info center to repair stability system. We have scanned it and gotten a C1287 code(steering rate error). There is no data for the sensor in ...
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2001 Pontiac Aztek 3.4L tailgate release VIN: 3G7DA03E61
I need some direction from GM techs on this aztec-the tailgate glass or gate lock wont release with the button on dash, the remote or the key switch on rear-I have tested the body system with my techII there are no codes stored and when you perform an imput te...
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2001 Saturn SL 1.9L Poor Idle Quality VIN: 1G8ZF52811
Car had 0442 code, but probably unrelated to idle problem (think it was just gas cap). Car will idle at 1600 when driving and letting off gas pedal, until it sits at a stop light for a few seconds, then it will idle down to about 800 rpms. Customer reports tha... Trouble codes: 0442 (Evaporative system small leak detected)
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Fixes & Summaries for GM
Fix/Summary Answers
1994 Buick Park Avenue 3.8L Cooling actuator motor VIN: 1G4CW52L5R
We finally called 'IdentiFix' after talking with them; we decided it was best to replace the programmer because they didn't believe there was anything else that could cause the actuator to move backwards. After replacing the programmer, the motor still moved b...
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1990 Cadillac Fleetwood 4.5L Hesitation, Surge, Cuts out VIN: 1G6CB5335L
The problems were in the ground at the front of the engine. I also found 2 pinched wires behind a cover on the LH fender. After removing the ground stud and repairing the 2 wires our problems were gone.
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1998 Chevrolet S10 2.2L CD player VIN: 1GCCS1443W
Thanks to all the replies. I guess the OTP or focus sensor goes bad and causes the symptoms I was having. The cost to get this radio repaired is in the two hundred dollar range from the two repair facilities I talked to. I however lucked out and found a stereo...
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1999 Chevrolet C1500 LS 5.7L theft system VIN: 1GCEC19R3X
thanks to all who replied, we replace cylinder housing and reprogram and it did the trick. thanx again guys
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1987 Oldsmobile Cutlass Ciera LS 3.8L Stall VIN: 1G3AJ5130H
A defective crankshaft sensor repaired the problem. Thanks all who responsed.
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1996 Oldsmobile 88 Royale 3.8L Cooling Systems
Thirty replies wow, I guess I was the only one in the USA who didn't know this. You can gain access through the p.s pump pully holes #2 13mm bolts and just push the p.s out of the way 2 minute job. THANKS TO ALL THAT REPLIED!
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1999 Oldsmobile Silhouette Premiere 3.4L Raidator VIN: 1GHDX03E7X
Thanks to all for all the help. The problen with this van was intake manifold gaskets.We followed Reference Number 03-06-01-010A that Steve from Minnesota had suggested.This was the water in the oil problem but test showed no HC's in the raidator.We presure ch...
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1995 Pontiac Grand Prix SE 3.1L oil pump VIN: 162WJ12M2S
I want to thank everyone for their informative replies,Chuck from Oklahoma,Kevin from Texas,Joe from New York,David from Texas and Jerry from Virginia.Iremoved the return line and inspected the line and check ball for debris.After finding no obstruction or deb...
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2001 Pontiac Grand Am GT 3.4L Suspension VIN: 1G2NW52E31
well i have recived 3-4 guys that pointed me to a wheel bearing...sounded crazy but that was it...this car had no sound going down the road..but if you would turn the wheel it sounded like someone hit the floor with a hammer..everyone that replied said if it h...
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1995 Saturn SL2 1.9L engine VIN: 1G8ZK5279S
Got the head back from machine shop. Exhaust valve springs replaced with updated spring. Installed head, running compression is now good. Engine still had a misfire, double checked everthing, found saturn supplied the wrong injector. ( Yes we gave them the vin...
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