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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 26, 2005
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Help Request Answers
1991 Buick Regal 3.8L battery VIN: 2G4WB11L9M
HI Guys looking for some help here with a battery drain that has come up after installing a c/d player . seems that I now have a battery drain to 0 volt stage after sitting for 1 day. the drain is a 9.8 volt and 8 amp drain. I've been able to get the drain v...
1992 Buick Regal Limited 3.8L speedometer VIN: 2G4WD54L8N
hi first time poster here. this 92 regal with the 3.8 came to us with an inop speedometer, tach and odometer. we replaced the speed sensor and now the odometer works, the speedometer and odometer are pegged and works backwards with no consistancy. the new spee...
1993 Buick LeSabre Custom 3.8L motormount
Trying to change this waterpump, and the motormount is in the way blocking 2 bolts to the waterpump, removed all bolts and nuts from the motormount and I have a long stud holding this motormount in place. My question is what is the best way to remove this stud...
1998 Cadillac DeVille 4.6L compressor VIN: 1G6KD54Y9W
vehicle came in with ac system inop. replaced comp. a/c system then started working but, when you turn it on when it cycles it takes about five minutes to actually turn back on. no bcm codes also check all other systems in vehicle no codes at all.
1998 Cadillac DeVille 4.6L Battery VIN: 1G6KD54Y6W
Another Cadillac battery draw issue - will drain battery dead over the course of approx. 3 days - when we unplug the BODY 3 fuse in the under hood maxi fuse panel, the draw will go away - we get the same results if we unplug the body computer in the trunk area...
1998 Cadillac Eldorado ETC 4.6L rr brake light VIN: 1G6ET1297W
have checked circut from switch to module lr trunk power in no power ot to the rr brake light, any help would be appreciated.
1992 Chevrolet S10 Blazer Sport 4.3L Low power VIN: 1GNDT13Z1N
Got in a 92 S-10 Blazer the other day, with a complaint of Low power. Watching scan data shows the Knock PID switches to 'YES' as soon as the engine is started. No audible noise is heard at idle. Repalced the Knock sensor with an OE unit with no change. Discon...
1994 Chevrolet K2500 5.7L radiator VIN: 1HCFK29K5R
We have a radiator eating chevy in our shop. This vehicle has been back to us 5 different times for coolant leaks- all were radiator failures (area of left tank cracked. This vehicle originally came to us from a body shop where it had frt end damage. We repl...
1996 Chevrolet Blazer 4.3L abs light on VIN: 1GNDT13WUT
HELLO FELLOW TECHS, I'm dealing with a ABS code c1265. Flow chart diagnostics come down to replace VCM.Tryed that, same problem.Checked all related circuits for continuity & grounds .Then replaced BPMV(with junkyard peice).Same problem.Code resets on test driv...
1997 Chevrolet Express 1500 5.0L MIL Lamp on VIN: 1GBFG15M2V
Thanks in advance,I have a wierd one, failed obd 2 em. This is setting a po430 and passing a 420. Strange thing is it is a one cat system. The van has 4 o2 and the only post cat is sensor b1s3. Yes it is aftermarket cat ( second one )but the the rear o2 is dea... Trouble codes: P0430
1998 Chevrolet C1500 Cheyenne 5.7L brake pedal VIN: 1GCEC19R0W
(FOUR WHEEL ABS)truck came in for soft pedal.frt. brakes were worn out ,so did brake job, rears good and adjustment good,pedal feel did not change. checked out arcives and mremoved rubber plugs from abs unit incerted a paper clip to check for bad accumulators-...
1998 Chevrolet S10 LS 4.3L No Start VIN: 1GCCS19X2W
code p1626 diagnosisis suggested replacement of lock cylinder and passlock sensor. performed subsequent passlock relearn. security light comes on foe few seconds, goes off for few seconds, comes back on and remains on for duration of 10 minute period. truck st... Trouble codes: P1626 (passlock sensor not recognized)
1999 Chevrolet Lumina 3.1L Hesitation, Misfire, MIL Lamp on VIN: 2G1W152M7X
At idle the MIL light will turn off. Miss History with scan tool: - Cyl #4 4747 & # 5 4. Freeze Frame - Load - 23% / Coolant temp - 95 C / Map (kpa) - 88 / VSS - 44 Miles / MAF - 34.85 gm/sec / TPS - 29% Appreciate any help on this one. Thanks Trouble codes: P0300, P1381 (Misfire detected - no ebcm / pcm serial data)
2000 Chevrolet Suburban 1500 LT 5.3L fuse IGN C VIN: 3GNEC16T9Y
Complaint is repeated failure, apparently at random, of this fuse. "NoData"s schematic not much help; sub-fuses never blow. Can't duplicate condition on road or in shop, pulling/pushing/poking/wiggling/swearing. No tsb's, apparently, Is an internal short in th...
2000 Chevrolet Silverado 1500 4.8L Cooling Systems VIN: 2GCEK19T9Y
Hi all, this customer called and said that he had left the drain plug out of the engine overnight and the next morning, antifreeze was dripping out of the oilpan drain hole. Has anyone seen cases of coolant in the oil in these newer style engines, and what has...
2001 Chevrolet Tahoe 5.3L Stall VIN: 1GIJEC13TE
This thing will just shut down while idling in stall seems like it is losing power to ignition switch. just got it to act up it will start right back up. no codes any help would be appreciated no security light on or codes Trouble codes: 1416A
2001 Chevrolet Venture LS 3.4L drivers side impact air bag VIN: 1GNDU23E12
Drivers side impact air bag deployed (mounted in back of drivers seat. unit deployed while comming to a routine stop light city traffic. No related repair history other that a complaint of had to boost in AM about 1 month ago, replaced battery at that time ...
2003 Chevrolet Malibu 3.1L guages VIN: 1G1ND52J83
vehicle complaint was delay on startup when hot only and all windows,guages,radio interior lights etc inoperative.When i test drove vehicle parked it shut it off and then tried to restart it vehicle started up ran fine,but all guages radio a/c system etc was n...
2004 Chevrolet Avalanche 1500 Z66 5.3L fuel tank VIN: 3GNEK12T24
Customer called us with the above complaint and explanation. We advised him we'd look into the situation and let him know what step to take next. It seems this should be a warranty issue, but customer has lost faith in the local dealer and wants us to advise ...
1999 Oldsmobile 88 Royale 3.8L engine VIN: 1G3HN52K2X
this car has a noies after it runs for awhile that would make you think a bearing is about to freeze up such as a water pump or alternator, but it isn't. I think it is related to the air induction somewhere. When you shut the engine off you can hear a vac suck...
1993 Pontiac Sunbird LE Value Leader 2.0L Hesitation, Surge, Cuts out VIN: 3G2JC51H5P
Hello Techs: This car came in with a request for a basic "tune up", and a note that there was a major bogging out on hard acceleration. Fuel filter was slightly restricted, so we changed that. All else checked out very good (plugs, wires, fuel pressure, air f...
1999 Pontiac Grand Am SE 2.4L Poor Idle Quality VIN: 1G2NE52T5X
Hello, This car came in with a check engine light on - p0300 Random Misfire. Installed scan tool, went to misfire information, intermitiant misfire on cylinder # four, only misfires at idle. Replaced all the numerous parts listed above. Removed timing chain c... Trouble codes: P0300
2001 Saturn L200 2.2L Excessive Emissions VIN: 1G8JU52F61
Weve got this Saturn in here first time weve seen this car it has a code p0172 system rich bank 1 sensor one , it seems to not have alot of power and shtft is at -20% at idle and long term is -13% at idle the load is at 37% at idle, fuel trim cell is at 21 the... Trouble codes: P0172 (fuel system too rich bank1)

Fixes & Summaries for GM
Fix/Summary Answers
1988 Buick Century Custom 2.8L Poor Idle Quality, Surge, Stall VIN: 1G4AH81W5J
First I would like to thank all of the members who replied with great advise! thanks Guys! I recived several replys telling me to enter the car in the scanner as an 89 model year instead of an 88 (the accual year) because of a prom update and MAF Delete. Which...
1997 Buick Park Avenue Ultra 3.8L air vents VIN: 1G4CU5212V
sorry for the delay...customer returned only yesterday... as suggested by several of you, the refrigerant charge was approximately 1/2 lb low...i wouldn't have believed it if i hadn't seen it myself many thanks to all who responded steve
1991 Cadillac Eldorado 4.9L System monitor VIN: 1G6EL13B2M
Wow, thank you for the great info!!! There was more than enough info to point me in the right direction, it was a bad Heater and A/C Programmer, all the wiring checked out and I found a used programmer that solved the weird symtoms this customer was concerned ...
1999 Cadillac DeVille 4.6L engine VIN: 1G6KD54YOX
thanks to all that emailed me very useful information. I recommended the customer to take car to dealer for repairs. Was able to have fixed for about $2500, customer is happy and drives his car daily. Again thanks.
2001 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY54931
thanks to the replies of curt bob and gm tech the problem was the fuel tank pressure sensor giving false reading to computer telling it there was restriction when there wasnt, nothing in alldata trouble shooting said anything about this. takes the experience o... Trouble codes: P0446.
2001 Chevrolet Monte Carlo SS 3.8L 1-2-3-Convertor Shift VIN: 2G1WX15K91
Thanks for all the replies. I still have not been able to resolve this issue. I went so far that I took it to a Chevrolet dealer who had it all day and they could not find the source of the problem. Once again thanks to all. I am still in search of the problem...
2005 GMC Yukon 6.0L Reverse
well I checked line pressure and it seemed low when first put into rev 60-90psi depending on temp and after 2-3 seconds it jumps to 120-150psi. If you give it too much throttle before the pressure rises it shudders. I removed the pan and rev boost valve, it lo...
2001 Saturn SW2 1.9L Hesitation, Cuts out VIN: 1G8ZJ82721
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