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Professional Automotive Repair Technical Discussions for June 2, 2007 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1999 Cadillac DeVille 4.6L Stall VIN: 166KD54Y5X This car stalls that is intermittant. Have checked fuel pressure and grounds. Have replaced both crank sensors and iac and have cleaned throttle body. Checked for bad connections. Snap shot on tech II shows nothing. Fuel pump was replaced about 6 months ago. D... Trouble codes: 1599 |
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| 1999 Cadillac Seville SLS 4.6L engine temp VIN: 1G6KS54YXX this vehical will only overheat with a/c on, comp engages harsh but blows cold cannot force into overheat by just driving hard, both rad fans on w/ a/c but only seem to be on low speed temp will come back down if a/c switched off have block tested and passed, ... |
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| 1992 Chevrolet K3500 Cheyenne 7.4L Poor Idle Quality, Misfire VIN: 2GCHK39NXN When I got the heads reinstalled and started vehicle. Everything checks out ok, except at idle there seems to be a misfire. Performed cylinder balance test and found #8 cylinder to not change the rpm. Checked compression 125 psi all others around 150 psi. Appl... |
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| 2000 Chevrolet Silverado 1500 4.3L No Start VIN: 1GCEC14W8X Truck come from another shop. The other shop replaced all in "Related Repair History". Customer says problem happend other night, no start. We checked for spark w/ an inline tester were u can see if spark is present if the LED lite lites up, and yes spark is p... |
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| 2001 Chevrolet Impala LS 3.8L fuel gauge radio VIN: 2G1WH55K71 i have this impala here that the radio does not play at times and the customer also says fuel gauge not working and sometimes even the dash lights go out.i have seen the radio play and not play i also noticed that the fuel gauge will go to full and back down t... |
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| 2001 Chevrolet Blazer LS 4.3L No Start VIN: 1GNDT13W71 Vehicle will intermittently start, about 1 out of 50 tries. When it does start, will run fine for about 15-20 seconds then die. Once it dies, it's quite a while before it will start again, sometimes overnight. On occasion, it will start and restart, then die a... Trouble codes: P0101 (Mass air flow sensor performance) |
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| 2002 Chevrolet Venture LS 3.4L open monitors VIN: 1GNDX03E52 hello techs - we had this vehicle on our used car lot and the battery went dead (thanks to a customer leaving a door ajar) now someone would like to buy and it wont go through ny insp because of open monitos (evap / cat) - i have used both alldata and mitchell... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1998 Cadillac DeVille 4.6L No Start VIN: 1G6KD54Y9W many replies all saying theft system needs to be relearned.i cycled the ignition key to the on position for 10 minutes and off for ten seconds after the fifth time before i shut the key off i cranked the car for about 20 seconds and the car stared.very importa... Trouble codes: P1631 (theft system). |
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| 1999 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GNDM19W3X found out the cat.was bad even though it was new.sent customer to exhaust shop.I believe this was cause of spark knock.i'll have to wait to hear from customer if this helps idle problem.only code i'm getting is random misfire now.help requests wre very helpful... Trouble codes: P0300, P0335. |
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| 1995 Pontiac Firebird Formula 5.7L Hesitation VIN: 2G2FV22P2S this vehicle is fixed. it was the cat. conv. i checked back pressure the first time and i had 1/2 psi at idle and 1 1/2 psi at 3000 rpm, which i thought were ok. but i guess not for this vehicle. a few days later he said it got worse so checked back pressure a... |
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| 2000 Pontiac Grand Prix SE 3.8L Stall VIN: 1G2WR521YF thanx to all who replied. very useful information, this site is the best tool i got from snap on. what the problem was a burned socket at the resistor plug. it had the revised unit on the firewall i followed the wire over near battery to the plug soonas i popp... |
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| 2000 Pontiac Sunfire SE 2.2L No Start, Cuts out, MIL Lamp on VIN: 1G2JB524XY customer did not want to spend any more time and money on this vehicle . most replies to my help request led towards an ignition switch problem but we did not get a chance to verify.thank you all for your help Trouble codes: U1000 (no state of health from module), U1040 (loss of ebcm/ebtcm communication), P1631, P1632. |
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