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Professional Automotive Repair Technical Discussions for March 22, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1989 Buick Skylark Limited 2.3L Excessive Emissions VIN: 1G4ND54DXK gm techs car fails idle emissons test. mil light is not on. had a code 43 for knock senser senser seems to work. my question is when looking at data the 2x signal says no and the 1x says no most of the time will flash yes for a second. i checked 1x and 2x sign... Trouble codes: 43 (knock senser code. senser test good) |
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| 1995 Buick Riviera 3.8L srs system voltage prob VIN: 1G4GD22195 i am having a problem with an air bag code 42 that will not go away i have checked the resistence of every sensor and clocksspring and they were all in specs i have checked all power and grounds and they were all correct i tried replacing the derm and the cloc... |
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| 1981 Cadillac DeVille 6.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy VIN: 1G6AD6990B THE ENGINE BACK FIRES, ACTS LIKE ACCELERATOR PUMP INOPERATIVE(IF IT HAD ONE), FOULS SPARKPLUGS(BLACK), INJECTORS SPRAY LARGE AMOUNT OF FUEL THEN CUTS OF COMPLETELY FOR A SPLIT SECOND THEN FLOODS AGAIN; WILL DRIVE WITH BORDER LINE OPERATION EXCEPT WHEN ACCELERA... Trouble codes: 15 (coolant sensor), 19 |
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| 1990 Chevrolet C60 Kodiak C6H042 6.0L Hesitation, Surge VIN: 1GBG6H1P5L I am having a hard time finding any info on this truck. I want to know what should the fuel pressure be on this one. It is a throttle body with the 90 deg small inj's. I have called our local dealer but they got rid of the heavy duty side. Just searching for i... |
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| 1990 Chevrolet C1500 Cheyenne 5.7L brake pedal height pulled all wheels, pads ok, rear shoes very good. no leaks found, rear drums adjusted fully. bleed master cyl. and all four wheels also , found no air. system will stop all four wheels when on the lift when brakes are applyed. called and got another master cyl... |
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| 1995 Chevrolet C2500 Cheyenne 5.7L Stall VIN: 1GCGC29K8S Hello fellows i have two problem cars, that i just cann't get rid of. I had this first one off and on for three months. The original complaint was when stepping on the brake pedal and the brake shuttled like the ABS was being applied, then the car stall, also ... |
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| 1995 Chevrolet C1500 4.3L shifter VIN: 1GCEC14ZXS After being driven hard or towing a trailer this truck will rattle the shifter when releasing the clutch in third gear. Normal driving will not cause the problem.. The clutch is recent and was all new oem parts.. I have inspected the clutch parts and they all ... |
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| 1996 Chevrolet Tahoe LS 5.7L No Start VIN: 1GNEK13R5T after sitting over night in rain truck will not start,cranks fine no tach on dash, tach signal on scan tool THE KEY THING IS AFTER CRANK WHEN KEY IS LET OFF TRUCK TRYS TO RUN BACKWARDS. If you put a torpedo heater under it for 10 min truck will start and run f... |
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| 1997 Chevrolet Camaro Z28 5.7L will not move sometimes? VIN: 2GIFP22P3V this car was referred to me by another shop. customer says it won't move intermittently. A week ago I looked @ car, no Codes, wouldn,t do anything wrong, today, it came back. I drove with no problems, let it hot soak. backed out & couldn't go forward, downshil... |
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| 2000 Chevrolet Tahoe LT 5.3L MIL Lamp on VIN: 1GNEK13T2Y This Tahoe is driving us crazy. Customer complaint of check engine light on, no driveability problem. Replace egr valve with oem valve, light returned that same day. The same 2 codes keep returning. Are they related? Spent some time today checking grounds and ... Trouble codes: P0404 (Egr feedback signal out of range), P0230 (Fuel pump control circuit problem) |
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| 1995 GMC K1500 Sierra SL 5.7L Mechanical VIN: 3GNHK15K1T owner installed larger than stock sized tires. now the tcc is too busy. what is best way to address this other than telling owner to get oem sized tires? do we tell ecm the new, larger tire size? how? do we change the amount of throttle to unlock tcc? how? ... |
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| 2000 GMC Sierra 1500 SL 5.3L security system VIN: 1GTEK14T14 This truck had a intermittent no start condition,no a/c,no daytime running lights, no dashlight. Found a service bulliten relating to ignition switch failures on these trucks. I replaced the ignition switch with a oem switch. I did not replace the lock cylinde... |
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| 1994 Oldsmobile Cutlass Ciera 3.1L Racing Idle VIN: 1G3AG53MXR Just replaced the lower intake gasket on this 3100 V6 Ciera. Job went routinely well as always on these cars. Now cannot slow idle down! When engine is warm IAC counts show zero and rpm is at 3000 rpm, totally out of control! No codes, integrator counts at 126... |
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| 1991 Pontiac Bonneville SE 3.8L speedometer VIN: 1G2HZ51C4M Vehicle has analog dash/speedo. Scan tool indicates speed but speedometer just quit. No speedo cable that I know of. Very limited info in my Chilton Pro manual in terms of troubleshooting. Coincidentally, I cannot get the high beam indicator to come on with th... |
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| 2000 Pontiac Bonneville SE 3.8L heater VIN: 1G2HX54KSY no heat any setting out vents. sensor? blend door act? |
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| 2000 Pontiac Sunfire SE 2.2L fuel gauge VIN: 1G2JB1244Y the sending unit has been replaced and wire loom checked for shorts, the sending unit sends the proper ohm readings when it is operated outside the tank, but the fuel gauge does not respond.when the ignition switch is turned on the gauge needle climbs an 1/8" ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Cadillac Seville 4.5L Poor Idle Quality VIN: 1G6KY533OL Thanks to all who replied. As I last left off the vehicle is running ok just is sailing a bit. The customer was very happy that it was not stalling anymore and said he would bring it back for us to look further into the sailing. He said he may not get a chance... |
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| 1993 Chevrolet Cavalier RS 3.1L Poor Idle Quality VIN: 3G1JF11T1P Thanks to everyone who responded- andrew l-greg -mark - recardo -nathan -skinknuckle-tnt4442- & one other . took all advice & rechecked - everything pointed to the computor acting up. customers wife won`t spend anymore money on car due to age & poor conditio... Trouble codes: 22 (tps low volt). |
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| 1995 Chevrolet K1500 Cheyenne 6.5L ABS Hydraulic Assembly/Combination Valve VIN: 2GCEK19S6S This vehicle is finally fixed. The problem was air inside the ABS Hydraulic unit. Activating the ABS with the TECH 2 did not help much and neither did gravity bleeding or pedal bleeding. I tried the Phoenix injector, but that did not produce satisfactory resul... |
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| 1998 Chevrolet Metro LSi 1.3L Spark plug / wire VIN: 2C1MR5222W Hello Everyone!! Thanks for the many replies. We tried switching plugs to see if it was a leaking plug, NO. After removing the head we could see just how bad the threads were, and how tight a fit between the valves the thread insert would be. But what really... |
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| 1998 Chevrolet Camaro 3.8L Misfire VIN: 2G1FP22K3W thank you all for being helpful and taking the time to reply. since the last post the customer needed to use the car and is bringing it back next week. thanks for the advise. |
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| 2000 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNCT18W9Y I think we had a defective new air pump from GM---Replace with another --have not had a check engine light or blew a fuse for over a week..Thanks Trouble codes: P0410. |
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| 2001 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52J41 I cleared the code on this vehicle and sent it out the door. I figured I would take the time to do some research and post the info here (which I obviously did). Then I would get the car back when I had some more info. Well... the light hasn't come back on. May... |
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| 2002 Chevrolet Blazer LS 4.3L radio VIN: 1GNDT13W32 The problem turned out to be an open power feed circuit to the bcm near junction 200.The remote starter installer disturbed this connection.We repaired the wiring,alls well thanks to everyone that responded. |
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| 2000 GMC Safari SL 4.3L transfer cas VIN: 1GKEL19W4Y While no one could answer my first question as to whether a Mastertech will communicate with transfer case or not, it won't. A Tech 2 is necessary. The repair required a fluid flush with GM Auto-trak II fluid. A TSB was finally found that dealt with the proble... |
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| 1990 Oldsmobile Cutlass Supreme 3.1L Poor Idle Quality, Misfire VIN: 1G3WH54DOL thanks folks, ecu not driving #2 injector.replaced ecu and boom gone,thanks again see ya on the flip side. |
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| 1997 Oldsmobile Regency 3.8L no cranking VIN: 1G3HC52K2V Thank you everybody The problem was in the key and tumbler When the key was in there was a good value of 9.46 but also when you take key out there was a value of 3.30 there also but not as much.We put in new tumbler and car runs and security light does not kee... |
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| 2001 Pontiac Grand Prix GT 3.8L engine VIN: 1G2WP12K11 thanx to everybody who replied, was the o rings for the pcv, customer told me after the fact tune up was done 1 week ago. |
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| 2001 Saturn L300 3.0L Starting VIN: 1G8JW52RX1 We found a bulletin for a similar problem, sent the vehicle back to the dealer. We were told they reprogrammed the computer. Spoke with another Saturn tech and he said that with the lock cylinder having problems and the key coming out in every position he woul... |
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