 Prev |
Professional Automotive Repair Technical Discussions for July 13, 2009 International Automotive Technicians' Network (iATN) - Members Only |
Next  |
| (Also Available: All, Asian, Chrysler, European, Ford, GM.) | ||
| Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder. | ||
Open Help Requests for GM
| Help Request | Answers | |
| 1999 Buick Century Custom 3.1L security light VIN: 2G4WS52M2X INTERMITTENTLY CUSTOMER WILL ATTEMPT TO START CAR SECURITY LIGHT WILL BE FLASHING AND NOTHING. ENGINE WILL NOT CRANK WHILE LIGHT IS FLASHING. THEN WAIT A FEW HOURS AND BANG IT STARTS. i KNOW THIS MODEL HAS ISSUES WITH THE WIRING COMING FROM THE IGNITION SWITCH... |
View | |
| 1992 Chevrolet Lumina 3.1L Hesitation, Misfire VIN: 2G1WL54T0N I have this Lumina throwing me fits. Customer complained of running problem. Car came in and was running fine. Two days later came back. Had misfire on both 6&3 coil towers. Replaced coil and ignition module. Ran vehicle and was fine. Two hours later went driv... |
View | |
| 1993 Chevrolet Corvette 5.7L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1G1YY23POP hello all . i have a corvette here with an intermittent problem . it has been ongoing for a month , slowly getting worse . it started with an occasional stall at idle in gear , (auto trans) i did a bg injection service,no real change .now it has a hesitation o... Trouble codes: 43 (esc) |
View | |
| 1995 Chevrolet K1500 Cheyenne 6.5L Surge, Stall VIN: 2GCEK19S3T This truck will very intermittently stall and set a p1218 code.A snapshot of data when setting the code gives a ECT -40, IAT -40, Fuel Temp-40,TFT -40, as well as the p1218 code. However, when the vehicle is running okay, these readings are normal. If the resi... Trouble codes: P1218 (Resistor Code) |
View | |
| 1996 Chevrolet C1500 Cheyenne 5.7L Misfire, MIL Lamp on VIN: 2GCEC19R4T VEHICLE CAME IN CHECK ENGINE LIGHT ON. MISFIRES ON #3 AND #6 according to counter. [...] dist cap, coil firing, plug wires firing. compression good. vacuum test good. fuel pressure within spec. replaced #3 and #6 injectors and then all but #6 cylinder were... Trouble codes: P0303, P0137 |
View | |
| 1996 Chevrolet K3500 Cheyenne 6.5L Ignition VIN: 1GCHK39F6T Thanks for you help in advance This truck came into our shop with the complaint that the engine would start while the key was in the on position, while waiting for the glow plugs to warm up. I checked the wiring under the dash and to the starter, looks ok. Ch... |
View | |
| 2000 Chevrolet Monte Carlo SS 3.8L Hesitation, stumble @ 45+ VIN: 2G1WX12K4Y I figured out most of the problems, I have one more vacuum leak to fix. I used a smoke machine to fix about 6 vacuum leaks. I have a 3.8 transverse motor, there is a casting hole about 3/4 to 1" in diameter in the upper rear of the block(right before the trasm... |
View | |
| 2001 Chevrolet Astro 4.3L Ignition switch VIN: 1GCDM19W11 This Cargo van is used for Scuba diving tours, parked near shore often. The ignition switch wont turn to the start position. I jumped the starter at the starter to move the van to a parking stall and ordered a switch, electrical. When I removed the switch from... |
View | |
| 2002 Chevrolet Tahoe LS 5.3L ride control VIN: 1GNEK13Z82 figuers its my own vehical. The auto leveling system is in inop. I have check all the powers and grounds, replaced the pump with a uses unit, there are no dtc's and all the pids look ok but i don't know if they are corect. any info would be great thanx again. ... |
View | |
| 2002 Chevrolet Silverado 2500 HD 6.0L air bag VIN: 1GCHK24U63 Hi all and thank you in advance for any help. I have a 2002 Chevy pickup that has "Service air bag" on in the information center, It also has the red airbag light on. Followed the system check in the manual and it leads me to sytem ok and I have no trouble cod... |
View | |
| 2003 Chevrolet Malibu 3.1L Excessive Emissions, MIL Lamp on VIN: 1G1ND52J83 reoccuring 420 does any one else see this problem on gm mainly on 3.1 and 3.4 several cats have been installed even heavy metal cats always fails 420 no reflahs found for this car what is the fix? Trouble codes: P0420 |
View | |
| 2003 Chevrolet Venture LS 3.4L power sliding doors VIN: 1GBDX23F03 Hi guys, this one is has me pulling my hair out! , origanally came in for pwr locks blowing fuse,found short and repaired about two weeks later came back with complaint of psd closing then re-opening. pulled codes gave a code 23. after exiting diag. mode do... |
View | |
| 2004 Chevrolet Colorado LS 3.5L Stall, MIL Lamp on VIN: 1GCDT136X4 Vehicle came in for an intermittent stall issue. P0335b crankshaft circuit code only. Pinpoint test checked ok. checked connectors at pcm. all appear ok. On occasion truck will not spin over after stall for restart.Replaced crank sensor, would not learn the n... Trouble codes: P0335 |
View | |
| 2004 Chevrolet Cavalier LS Sport 2.2L Slave Cylinder VIN: 3G1JH12F14 Hello all This one is obvious what the problem is but I just don't have an answer as to why. Vehicle Comes in every 18 Months or so with a slave leaking like crazy. We first replaced it at 48K (after dealer had done it under factory warranty less than 36k. It ... |
View | |
| 1994 Geo Prizm 1.6L idle too high VIN: 1Y1SK5366R This car was sent away from a smog test-only shop with a note on the work order to get the timing set, and to lower the idle to 750RPM from about 1200rpm. That seemed like an easy fix. First I check for any obvious tampering-none. Then I connected the two term... |
View | |
| 1996 GMC C1500 Suburban 5.7L brakes VIN: 1GKEC16R5T customer complained of a pull to the right when braking. Two sets of loaded calipers and new hoses have been installed. Rear brakes look good and don't appear to bee sticking. Did an allignment and it looked good as well. Brake pressure was not tested but appe... |
View | |
| 1996 GMC Sonoma SL 2.2L Misfire VIN: 1GTCS1443T i HAVE A 1996 GMC SONOMA 2.2 MISSFIRES ON #3 CLYL ONLY PUTE IN NEW PLUG WHIRES AND COIL 90 LBS COMPRESION AND STILL MISSFIRES ANY HELP WOULD BE GREATLY APPRECIATED THANK YOU BRIAN |
View | |
| 2004 GMC Sierra 3500 SLE 6.6L oil pressure VIN: 1GTJK33224 OK, very simply; The turbo bearing was making noise, nothing else was wrong with the truck. The customer bought a new turbo and brought it to me. I replaced the turbo. It took many, many hours but no real significant setbacks or problems during installation. I... |
View | |
| 1997 Oldsmobile Achieva S 2.4L Excessive Emissions, MIL Lamp on VIN: 1G3NL52T9V Runs rough (rich condition). SES light on, PO171 Lean Bank 1 Sensor 1. No vacuum leaks. KOEO both O2's read .5. After 1 minute running, front O2 reads 0, rear O2 reads .900 (rich). Replaced front O2, ECM, wire from O2 to ECM, and ground wire (ECM to ground). N... Trouble codes: P0171 |
View | |
| 1998 Pontiac Trans Sport Montana 3.4L dash lights-exterior lights-starter VIN: 1GMDU03E9W hi guys! evvery time you push the brake pedal(even in park) you can hear the selenoid trying to engage and at the same time dash lights and exterior lights are flashing, very weird! t |
View | |
| 2000 Pontiac Grand Prix SE 3.1L tcc VIN: 1G2WJ52J3Y This GP is a weird one. Once the car warms up, on moderate to heavy accel only, it bucks and shakes all over the place and cant get out of its own way. In the stall you can power brake it, and at around 2000 rpm you get a very rythmic "bump bump" and the whole... |
View | |
| 2004 Saturn Vue 3.5L A/C compressor VIN: 5GZCZ53464 Car came in states that A/C not get cold at idle, driving high cooling ok, Ck out low side 70psi, high side 150psi,Ck freon level ok, replaced compressor, drier, expansion valve, reading still the same unless rev up 2500rpm, please advise, read in TSB, if any ... |
View | |
| 2007 Saturn Ion-2 2.2L MIL Lamp on, LOW POWER MODE VIN: 1G8AJ55F77 To all you Saturn Gurus out there. This vehicle presented with a customer complaint of low power and a check engine light on. The two codes above were retrieved. The service manual (AllData) says that P2127 will set if the signal voltage goes below 0.13v for ... Trouble codes: P2127 (app2 circuit low), P2138 (app throttle correlation) |
View |
Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1966 Cadillac CoupeDeVille 429CID Auto Climate Control Thanks to those who responded!!! Sorry Dennis for not calling back but i was sick on thursday and friday. Bob emailed me information on the system and what i found was by jumping the yellow and orange/black wires the system would operate(or by squeezing the sw... |
4 | |
| 1989 Cadillac Eldorado 4.5L Poor Idle Quality, Hesitation, Stall, Misfire, hard start VIN: 1G6EL1157K Thank you to all of those who replied. I will have to say this car is on my "do not like" list. I finally determaned that the car had a faulty fuel pressure regulator. When I performed the fuel pressure check it was good but when the car was running the fuel p... |
18 | |
| 1974 Chevrolet Caprice Classic 5.7L Lighting VIN: 1N39R40130 Hi All,Don`t have much useful information.I supplied power and ground to every thing i could think of with no change.Also changed bulbs.I found headlight switch and turnsignal switch locally and i think they should have been replaced,but customer said he would... |
44 | |
| 1984 Chevrolet Corvette 5.7L suspension VIN: 1G1AY0787E The inner tie rods on the back were badly worn...just got overlooked. Thanks everyone! |
13 | |
| 1988 Chevrolet Corvette 35th Anniversary Edition 5.7L cooling VIN: 1G1YY3180J THANKS FOR THE REPLIES FROM ALL. YES I DID VERIFY THE ACTUAL TEMP VERSES THE GAUGE AND SCANNER TEMP. ACTUAL VERSES GAUAGE WITHIN 2 PERCENT. THE CONDENSER AND RADIATOR WERE CLEAR OF ALL DEBRE. RADIATOR COOLING FAN ON AT 228 CONDESOR FAN ON AT 238. PCM WOULNT GR... |
28 | |
| 1997 Chevrolet S10 4.3L Misfire VIN: 1GCCT14W6V Vehicle is still in same operational condition, replaced injector assembly which all indications lead to, went through pinout of ECM and inspected all grounds. Even replaced ECM with known good unit. OEM coil, module, cap, rotor and wires.. still misfire under... |
18 | |
| 1999 Chevrolet C1500 Suburban 5.7L cruise control well techs i fixed this one with your help,most replies were to check rear light for bad bulbs or ground problems.the right rear bulb curcuit board was melted and once it heated up from use would loose it's ground,replaced curcuit board and all is well,thanks ... |
10 | |
| 1999 Chevrolet Express 1500 5.7L Misfire VIN: 1GBFG15RXX thanks for the replies,the van belongs to my parents so i have been driving it for two weeks without it acting up i have scope checked and looked again at everything that has to do with number 7 cylinder Trouble codes: P0307 (cylinder 7 misfire). |
13 | |
| 2004 Chevrolet Trailblazer EXT North Face 5.3L air conditioning VIN: 1GNET16PX4 This vehicle has been in our shop 3 times since help request was opened; problem still not solved. Reflash did not change anything, outside temp display is normal, do not see volt drop accross ignition switch when A/C on. We have Snap On Modis but have not had... |
6 | |
| 1999 Oldsmobile Cutlass GL 3.1L Poor Idle Quality, Surge, Stall VIN: 1G3NB52M5X Sorry for the long delay in posting this fix. I fell and broke my arm shortly after fixing this thing. And have not been near my computor until now. At any rate the problem was the solinoid in the transmission sticking and keeping the converter in lock up. W... |
8 | |
| 1999 Oldsmobile Alero GL 3.4L high idle VIN: 1G3NL52E4X i replaced the tps and all is working fine.test drove and retested sent with cust and is working fine. thanks for all the help |
3 | |
| 2004 Pontiac Grand Am GT 3.4L starter/ecu VIN: 1G2NW52E14 Sorry guys could not fix this one,most replies said to look at IG switch,I had replaced the electrical portion and no luck.Also tried an ignition module and crank sensors no luck (I replaced them because I thaught the ecu was not seeing the rpm that is calcula... |
4 | |
| 2006 Pontiac Vibe 1.8L sir airbags VIN: 5Y2SL65846 sorry for taking so long to reply well i had some good replys to this one and joey [...] hit it on the head after i checked all the circuts again and found no problems i took it to the dealer i picked it up today and they calibrated ... |
4 | |
| 2001 Saturn L200 2.2L a/c clutch Checked diode as suggested, no problem, functioning as designed. I knew clutch was bad because we had power & ground and could not energize with power probe, also had checked continuity and coil was open. When we removed the old coil to replace with a new co... |
3 |
