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Professional Automotive Repair Technical Discussions for March 1, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1993 Buick Regal 3.1L Hesitation, Cuts out, Stall VIN: 2G4WB51T9P Hi group. I have a 93 Buick here that is driving me nuts. What is does, randomly, hot, cold, or at idle, it seems as if the motor is cutting out. Not a misfire, I can watch the tack when it cuts out, and it does cut out also. New crank sensor, new plugs and wi... |
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| 1990 Cadillac Fleetwood 4.5L Excessive Emissions, No Start VIN: 1G6CB533XL Car had been hit in right front corner, and has since been sitting for 4 years. I had to install new plugs (fuel fouled), and a catalytic converter(plugged) in order to get car running. This thing is running way rich, O2 reads 900 - 1000 mV most all the time, ... |
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| 1990 Cadillac Fleetwood 4.5L Hesitation, Surge, Cuts out VIN: 1G6CB5335L we've spent far too manyhours on this and are hoping someone has the answer |
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| 1987 Chevrolet V10 Custom Deluxe 5.7L Hesitation VIN: 1GCEV14K6H Hello everyone, I have a real problem vehicle here. Any help would be greatly appreciated. This truck has a hesitation problem in the AM. It starts good and drives good for about 2 miles, when you get to the first stop sign. On accell, there is a very bad hesi... |
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| 1989 Chevrolet Beretta GT 2.8L voltmeter, tach, temp VIN: 1G1LW14W5K used car dealer, vehicle. digital gauge cluster works normally, untill Snap On MT2500 scanner is conected to the ALDL connector. Then the voltmeter, temp, and tach, go to zero. Is this a normal condition? If not any sugestions? It does not effet the operation ... |
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| 1994 Chevrolet Corsica 3.1L MIL Lamp on VIN: 1G1LD55M1R this car has been in 3 times with the same code. first time original egr was bad. second time solenoid 3 had shorted out. replace as warranty. now i have the same code but the #3 solenoid is switching properly. has anybody seen this yet. please help russ Trouble codes: 77 (egr solenoid 3 fault) |
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| 1998 Chevrolet S10 2.2L CD player VIN: 1GCCS1443W I have a 98 s-10 in the shop for a problem with the factory theftlock CD player. The radio portion works great but when you insert a CD, "ERR" is displayed and the CD comes back out. I've tried different CD's with the same result. The owner said that if he rep... |
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| 1999 Chevrolet C1500 Suburban 5.7L Cuts out VIN: 3GNEC16R8X Bucking, Surging, Extreem tach fluctuation, sometimes dash lights flicker and abs light and ses light will illuminate, but no codes. Suspected ignition primary loss, but signal is steady untill problem is occuring. Problem is very intermittent, and can not dup... |
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| 2000 Chevrolet Suburban 1500 LT 5.3L Passlock VIN: 3GNFK16T6Y We're replacing the ignition lock body and passlock sensor on this 'Burban. Alldata only gives the "re-learn" procedure when using the factory scanner, but I believe I can replace the lock body and sensor and start the vehicle without the factory tool--somehow... |
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| 2001 Chevrolet Silverado 2500 6.0L Poor Idle Quality, Misfire VIN: 1GCHK29U61 Cyls 2 and 7 missing on the counter, scoped the injectors and the coils all good patterns. Switched coils between 2 and 4, switched injectors between 2 and 6. Miss did not move, Checked for vaccum leaks, and everything else I could think of. It is not missing ... Trouble codes: P0300 |
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| 2001 Chevrolet Suburban 1500 5.3L fuel pump VIN: 3GNEC16T91 Fuel pump stays on after the engine has shut off. Tried removing the fuel pump relay and the ecm2 fuse, but it just keeps running unless the battery is disconnected. Wiring diagram shows direct power from the relay to the pump. Any one seen this before I pull ... |
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| 2002 Chevrolet Monte Carlo LS 3.4L engine VIN: 2G1WW12E12 hi, we've checked the motor, mechanically it appears sound, checked electronically with a sun machine using simi tech, passed everything in it. hooked up a scanner, no codes, all data appears normal, comparing it to another car with 3.4 engine in it. car will ... |
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| 1997 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ1867V This car came in with a PO400A code. It's a egr flow malfunction code. The service manual says that the computer will use the egr bypass valve to send vacuum to the egr valve. It then watches for a difference in the map sensor readings. If the computer sees a ... Trouble codes: P0400 |
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| 1993 GMC C3500 Sierra SLE 7.4L rear brakes VIN: 1GTHC33N7P When you apply the brakes in the truck, it nose dives and locks the front wheels with steady pressure. it feels like the rear wheels are not getting enough pressure. it has rear ABS and no front ABS. I think the Rear ABS unit might be restricting the flow of f... |
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| 1993 Pontiac Grand Am SE 2.3L timing chain/tensioner VIN: 1G2NE5435P hi. we had installed a timing chain on this vehicle 6 months ago due to chain hitting cover. replaced it with complete chain kit(gears,guides,chain and tensioner). vehicle returned last thursday. customer says they went to start it that morning and it was maki... |
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| 1992 Saturn SL 1.9L Stall, Misfire VIN: IG8ZK547XN This saturn is driving me nuts. It has a very intermittent miss on a cell when it's mostly cold. Vehicle has new coils & new wires. I did a top engine clean on it and it ran great for 1-1/2 days. I had the lab scope on the plug wires & injectors to see if I wo... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1994 Cadillac DeVille 4.9L MIL Lamp on VIN: 1G6KD52B2R we replaced the computer again,we did the egr test with the master tech and it would not turn on the egr solenoid so we replaced the computer along with the egr solenoid,road tested 40 miles all seem to be well,others said alot of trouble with solenoids,plugge... Trouble codes: 48 (no egr flow). |
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| 1993 Chevrolet Astro CL 4.3L No Start, Flooding VIN: 1GNDM19W1P Hi Guy First of all I want to thank everyone who took the time to read my mail. A lot of techs cmes up to assit me . Dale [...], Alwin and a lot more that I cannot mentio... |
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| 1992 Chevrolet Cavalier RS 2.2L Mechanical VIN: HJWE34UI45 If abs light is on, that may keep valves from going to home position, and make it impossible to bleed . i was unsure about the position of the valves. thought i may need GM scanner. Tried bleeding brakes with engine running so the valves don't move out of posi... |
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| 1995 Chevrolet Lumina 3.1L Unknown VIN: 2G1W152M45 hello every body . every body was right it was the t.s swich replace the switch and the brake lights came on .i would like to thank every body by name but i had so many replies over 35 .thankyou very mutch guys you ben agreat help thats why i love America... |
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| 1996 Chevrolet K1500 Suburban 5.7L drive axle seal VIN: 1GDFK16R4T Thanks to all who replied. Most said to use a really big slide hammer. I had one at my disposal but could not get a good swing at it while the differential was in the truck. Once we removed it from the vehicle it was a piece of cake. |
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| 2000 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 3G1JC5243Y Thanks to everyone who helped with this problem, the vehicle needed to have more CNG added to the tank before I could do anymore diagnostics. I will keep the emails that were sent to me for diagnostic checks when the vehicle returns. I am also in the process o... Trouble codes: P1202 (Gas Mass Sensor Frequency Low). |
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| 2001 Chevrolet Silverado 2500 HD 6.0L No Start VIN: 1GBHC24U61 Thanks to all that replied. It is great to comunicate with others in this trade, who are not just parts hangers. I reinstalled an AC delco pump today and truck is up and running again, hopefully this will be my last time. Wade from colorado & Doug from Wis... |
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| 1995 GMC K1500 Suburban 5.7L Poor Idle Quality VIN: 1GFNK16K7S First I would like to thank those who took time to reply to my request. Secondly, I would like to apololgize for not for not doing my job. Basic's, basic's, basic's. I also am going to my Snap-On rep and find out why my 'new' vacuum guage dampens so much. Went... |
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| 1995 GMC C3500HD 7.4L timing chain Well, no one got this exactly, but all your responses got me thinking and it finally dawned on me what was wrong. The kicker was that the engine ran smooth, just noisy, before the driver took it. It had bent seven of the eight intake pushrods, and by the time ... |
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| 1976 Pontiac Firebird 6.6L Excessive Emissions, Poor Idle Quality, Hesitation, Stall First of all thanks to all who responded, It truned out that the cam was bad, #7 exhaust lobe was worn down and the lifter was dished. I have a stock cam and lifters coming so the vacuum should be back to normal. The engine was a 400z Pontiac. |
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| 1995 Pontiac Trans Sport 3.1L No Start, Poor Idle Quality, Cuts out, Stall VIN: 1GMDU06DX5 I checked the wires around the starter, high tension wires behind alternator,set the timing, but it did not make any difference. Customer said he is going to take the van to the dealers. I would like to thank those people who sent me the E mail to fix the prob... Trouble codes: 43 (o2 sensor rich). |
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| 2000 Pontiac Grand Prix GT 3.8L Poor Fuel Economy VIN: 1G2WP52K7Y Thanks for all the replies and the amazing speed of IATN members. I am convinced now that any claims from the dealer or car sales people regarding 30 MPG plus mileage attained with this engine are 99% B.S. The car works well and has plenty of power, so as the ... |
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