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Professional Automotive Repair Technical Discussions for January 27, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1992 Cadillac DeVille 4.9L headlights VIN: 1G6CD53B3N car came into shop with headlights staying on only data i have is old shop manual from 1986 any help would be greatly appricated |
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| 1992 Chevrolet K2500 Cheyenne 5.7L extended crank VIN: 1GCFK24K4N This truck does start up. First time usually right away, turn off and on again and crank time may go on for 30 seconds or more. While cranking no tach signal,no injector pulse signal,no spark,no 3X ref,no 18X. Fuel pump voltage only about 4 volts through relay... |
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| 1995 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13WXS this vehicle has been in multiple times for no start condition, intially the were spark issueswith good fuel delivery. now then there are fuel delivery issues. the last 4 trips into the shop we have had every thing necessary to the computer but no injector pul... |
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| 1995 Chevrolet Beretta Z26 3.1L abs-rear brakes VIN: 1G1LW15M1S car came in with abs light and red brake light on .has no rear brake pressure. replaced rear wheel cyls. checked rear brake hoses all good.scaned abs has code51 rear axel nut fail (free spin)and code 86 abs turned on redbrake light. |
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| 1996 Chevrolet Cavalier LS 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 1G1JF5247T every time i attempt to access data stream ck engine flashs fast and vehical dies i back out of data with scan tool still hooked up vehical runs but will die out slowly |
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| 1999 Chevrolet Silverado 1500 4.3L No start VIN: 1GCEC14W9X Hope you guys can help on this one. Seems that the truck is a problem child and has landed here. Did the obvious checks when truck came in. Fuel pressure at time tested was 48. After pump replacement it was 62. Truck ran great for 20 minutes and shut down like... |
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| 1999 Chevrolet K2500 Suburban 7.4L ride control VIN: 3GNGK26J4X This Suburban wanders on the road like a drunk driver. When purchased new it tracked like a Mercedes with or without 7000 lbs on the trailer ball. Now it feels like it has an overweight load in the rear all of the time. I am an import shop and use this to tow ... |
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| 1999 Chevrolet Tahoe LS 5.7L Surge, Cuts out, BUCKING VIN: 1GNEK13R2X Hey guys, hope someone could help with this one. You guys helped me before in the past. Another tech here was working on this Tahoe for a catalytic converter code. He replaced the O2 and vehicle was returned 50 miles later, customer complaining of a bucking ov... |
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| 2000 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GNDM19W3Y failure #1 tps=21% maf=28.17 map=50 mph=64 rpm=1808 load=17% failure #2 tps=18% maf=23.99 map=49 mph=55 rpm=1575 load=14% code sets very intermittently. has anyone seen this before i don't want to guess at it but i was wondering if induction cleanin... Trouble codes: P0121 (tps or app sensor 1 problem) |
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| 2000 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNCT18W9Y I have a 2000 Blazer that the check engine is on code P0410 (secondary air injection system malfuction). Go thru all the tests and re-set light stays off for a about a week and will come back on--same code... any thoughts??? Trouble codes: P0410 |
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| 1991 GMC C7000 Topkick C7H042 6.0L Excessive Emissions, Cuts out, MIL Lamp on VIN: IGDJ7H1POM started engine runs very poor, high emissions , fouls plugs .back fires through intake .with est disconnected all problems go away, runs good at base timing .very limited on test procedures for this style of system .any clues or testing procedures would be gre... Trouble codes: 33 (map sensor) |
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| 1996 GMC K1500 Sierra SL 5.7L No Start, Poor Idle Quality, Misfire VIN: 1GTEK19R0T someone put sugar or something in this gas tank and ruined the injectors,regulator and pump. my problem is the truck has a missfire still and the intake gasket actually made a popping noise and blew right out toward the valve cover above number 1 cyl. could de... Trouble codes: P0300 |
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| 1990 Oldsmobile Cutlass Supreme International 3.1L no power VIN: 1G3WR54T9L car sits and idles fairly good revs up slowly ,acts like timing is retarded but according to scan tool timing is 15 degrees advanced at idle.i had been trying to figure out someway of checking timing but so far have come up empty. Trouble codes: 33 (map sen.) |
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| 1994 Oldsmobile 88 Royale LS 3.8L crankshaft VIN: 1G3HY52L9R we recently did a lower intake gasket on this car because of external coolant and oil leaks. when disassembled it showed no sign of internal coolant leaks. the oil was changed at the same time. yet after the repair, the car went 140km and the engine seized. th... |
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| 1997 Oldsmobile Cutlass Supreme SL 3.1L Surge, Cuts out VIN: 1G3WH12MXV This one belongs to me. It is my wifes vehicle and we purchased it new. At about 6,000 miles it started, on an irregular basis surging and feels like cutting out. Feels like a fuel surge. It only does it for about 10 to 15 seconds and may do it today and not a... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Buick Electra Park Avenue 3.8L No Start VIN: 1G4CW54C7L Thanks to all who replied most said the coil pack .check ohms across towers should be around 12 ohms mine checked out good.I put a new ac/delco coil pack on in place of the napa coil,still didn't start.I worked on this car outside for about 2 hrs. with snow bl... |
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| 1997 Buick LeSabre Limited 3.8L Poor Idle Quality, Misfire VIN: 1G4HR52K6V First, thanks everyone for your help. Our customer initially brought car for what he thought was a blown headgasket. We tow it in & do our compression tests & can see no external leaks. Coolant reservoir was low, but not empty. The car ran extremely rough & we... Trouble codes: P0300. |
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| 1998 Buick LeSabre Custom 3.8L Interior/Exterior lights VIN: 1G4HP52K7W Well, it's fixed! I received a couple responses to this one about a possible faulty BCM or loose/poor connection behind the passenger kick panel. Both of these items checked out OK. Upon further inspection of wiring and such, we found a loose connection at the... |
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| 1999 Cadillac DeVille d'Elegance 4.6L MIL Lamp on VIN: 1G6KE54Y9X First of all, thanks Allen [...]. Ended up being an intake leak under the intake manifold in the block valley. The intake manifold was cracked. Thanks to all who replied. Trouble codes: P0300, P0603. |
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| 1985 Chevrolet C10 Custom 4.3L Poor Idle Quality VIN: 2GCCC14N9G The fix was to jump the a and c wires on the dist. and plug the hose to the vacumn advance to time it. I then left the jumper across the a and c wires and ran it with the vac. advance only. It now runs 100% better. Thanks for all the replies. |
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| 1986 Chevrolet S10 Blazer 2.8L Window Washer VIN: 1GCCT14BXD Have not had the rig back in the shop, but have figuered out that the only thing it can be is a bad wiper motor. The control from the switch to the circut broad are good, but even with a new broad the washer power is not there. Besides I have tried every thing... |
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| 1993 Chevrolet S10 Blazer 4.3L no start VIN: 1GNT13W9P2 Well gentlemen I finaly got this little blazer fixed. The following is a step by step procedure {which includes a summary of all your ideas}to test and repair a 93 vin w 4.3 engine. While it may not be necessary to say, I will anyway. Don't over look the obvio... |
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| 1994 Chevrolet K1500 5.7L Mechanical VIN: 20CEC19KR1 Received 16 replies, you members are the best. Cutomer is in hospital now, he took the truck home so we are not able to finish the job. lots of good help, will post more if he brings the truck back. Again, thanks a lot. |
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| 1995 Chevrolet S10 2.2L Coolant Leak VIN: 1GTCS194S8 Had 26 replies. Over 20 said that the head gasket would split at the drivers side rear head bolt and all were right on. Other possible leak areas included the EGR plate on rear of head. crack at #1 spark plug hole, porus head, and one that described a crack fr... |
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| 1997 Chevrolet Cavalier 2.2L no-start VIN: 3G1JC1243V I would like to thank the 5 people who repied.This was a case of me wanting to save the customer some money(but in my gut kind of knew)by doing everything in house.It took a trip to the local dealer(after a 8 day wait)to have used pcm programed with the proper... |
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| 1998 Chevrolet Astro 4.3L steering pump and power brakes VIN: 1GNDM19W1W thanks everybody, i had to pull out the union fitting at the control valve and i found out that the o-ring was installed in the first groove instead of the second groove. the first groove has a bypass passage for the fluid, the o-ring was blocking this passage... |
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| 2000 Chevrolet Suburban 1500 5.3L battery VIN: 1GTEC14W0Y thanks for everyones input . the logic module in the instrument cluster is bad and we will be replacing the cluster. |
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| 1997 GMC Savana 2500 5.0L Hesitation VIN: 1GTFG29M4V Still waiting for client to return. As I stated before, he's never got enough time. |
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| 1986 Oldsmobile 98 Regency Brougham 3.8L No Start VIN: 1G3CW69B9G You guys are great. I got alot of replies, 26 to be exact. And I chased down a lot of them. These engines are prone to many problems. Numerous times I was told about the cam sensor magnet falling out of it's holder, but it was there. The crank sensors are know... |
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| 1998 Oldsmobile Silhouette Premiere 3.4L cooling fans VIN: 1GHDX03E9W thanks to all who responded. most responses were asking to check actual temp verses scan tool. i had already done that and had another response to check bell housing grounds. they were all good. the fix was to simply reprogram the ecm. now the fans operate acc... |
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| 1990 Pontiac Bonneville SE 3.8L blower motor VIN: 1G2HZ54C8L Hea Guys.. Thanks for all that replied.. the evap was plugged not letting air move thru and keep the module cool. Thanks Again.. |
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| 1998 Saturn SL2 1.9L Electronic VIN: 1G8ZK5276W Thanks for all the input, I was correct with the PCM being brain dead. Sent to the dealer for replacement under 8/80 warranty. Trans shifts great know- First PCM I have seen for this problem, Thank god I worked at the Saturn Dealer 10 years before going out on... |
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