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Prev Professional Automotive Repair Technical Discussions for February 13, 2006
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Open Help Requests for GM
Help Request Answers
1991 Buick Park Avenue 3.8L Lighting VIN: 1G4CW53L3M
Hi All i have this Park Avenue with dome lights and door lights staying on, i removed all of the relays under the right dash panel but the lights remain, when i remove fuse 15 from the fuse box under left dash the dome lights went out, when i remove fuse #3 fr...
1994 Buick Century Special 3.1L shifts poorly VIN: 1G4AG85M5R
Hi Group - I need help with code PO 501 ( Vehicle Speed Sensor) The speedo runs backwards when accelerating, and idle flares between shifts. Scanner troubleshooter is vauge, does anyone know a common cause? Thank You, Jim
1998 Cadillac Seville STS 4.6L battery VIN: 1G6KY5492W
This cadillac is drawing 3.8 amps and flattening the battery.I removed fuse 63 from the fuse box under the seat (amp)and it dropped to 2amps.I then removed fuse # 7 from the fuse box under the bonnet and it fixed the rest of the current draw.I need to no what ...
1995 Chevrolet Cavalier 2.2L Stall VIN: 1G1JC5249S
Hello!!! This vehicle will stall when warms up and not restart until cold. Put snap on scanner to check for DTC's and found 27-Quad driver fault. Customer himself has replaced engine controller(pcm), coils and ignition module. Was wondering if I could get some... Trouble codes: 27 (quad driver fault)
1999 Chevrolet Silverado 1500 5.3L unknown VIN: 1GCEK19T6X
Hello everyone and thanks for taking the time to read this. We had this truck in for a very low brake pedal and the ABS lamp was on. Found the master cylinder leaking fluid and replaced with a new one.When we went to bleed the brakes by commanding the pump on ...
2000 Chevrolet Metro LSi 1.3L Timing belt VIN: 2C1MR5227Y
Lost balancer and had broken the bolts in the crank pulley. Replaced the above items along with the timing belt and keyway is in place. Now the vechicle does not start.Was running before. Checked compression and found #1 leaking into intake. Sent head to engi...
2000 Chevrolet S10 2.2L starter VIN: 1GCCS1451Y
Well guys,I'm stuck on this one.This truck came in for a problem with the starter engaging on it's own.No kidding, when I first whent to bring this truck into the shop,it was cranking in the parking lot as I walked to it with the key in my hand.During the orig...
2002 Chevrolet Suburban 1500 LT 5.3L rear wiper VIN: 1GNFK16ZX2
Hello, everyone this one is killing us. this vehicle's rear wiper runs continuous when ever ignition is on... or when brake pedal is pressed !!also vehicle stalls when this happens..scan codes are p1626 anti-theft,u1026 loss of class2 comm. u1041 loss of EBCM/...
1997 GMC Jimmy SL 4.3L warning lights VIN: 1GKDT13W9V
Various warning lights on, very intermittently. Customer knows ABS light was on, possibly Service Engine Soon, and SIR lights on. They stated that once, it happened while stopped, and that blower motor and radio quit. Don't know for how long. I could not dupli...
1997 Oldsmobile Achieva S 2.4L MIL Lamp on VIN: 1G3NL52TSV
this vehicle came in last week did not have time to look at it. got it back in today the ses lt is now off. the codes still remain in the memory but the car runs fine.when the lite is on their is no drivability symtoms. no idea on this one hope you can help th... Trouble codes: P0335 (ckt sensor a ckt problem), P0342 (cmp sensor signal low), P1629 (theft fuel enable incorrect/ no signal)
1998 Oldsmobile Aurora 4.0L Center vent airflow VIN: 1G3GR62C4Q
This vehicle has very poor airflow out the center registers in either heat or A/C mode. All door actuators appear to be working properly and with lower duct work disconnected to gain visual up into the plenum, all doors appear to be moving. This one has dual c...
2001 Oldsmobile Intrigue GL 3.5L radio VIN: IG3WX52HOI
I replaced battery and my jumper fell off and now the radio is locked. I pulled code 362/371 is there a way to get the unlock code from these? Customer bought car brand new but doesn't remember the code. Thank You in advance Ken
2002 Oldsmobile Bravada 4.2L rear wiper VIN: IGHDT13552
i have this bravada with a rear wiper that wipes once no matter what setting its on and parks.the washer makes it stay on when it is spraying and then it shuts off.i checked the switch and it seems to check out.on this system it goes through the bcm and liftga...
2002 Oldsmobile Bravada 4.2L instrument cluster VIN: 1GHDT13S32
ABS and brake lights come on at times. All gauges drop while driving at times. Info display for drivers # comes up unknown at times and constantly changes. Had friend at gm dealer try to reprogram body module as per service buliton. Would not reprogram. Not su...
1995 Pontiac Firebird Formula 5.7L Electronic VIN: 2G2FV22P7S
O.k. techs. need your help. this vehicle was towed to the shop as a no start. During testing, found no 5v. fron ecm. Replaced ecm and had dealer reprogram. Got car back and now have reference. determined dist. has failed. Rplaced dist. and now starts and runs ...
1993 Saturn SL2 1.9L Excessive Emissions VIN: 1G8ZK5578P
Have an odd one here, This saturn gives an alphanumeric designation for the temperature reading, and also counts down instead of going up as it warms. meaning it will start at 70 and go to 6f, 6e, 6d, and so on till it gets to (a) and then starts numeric count...
2000 Saturn SL1 1.9L Poor Idle Quality VIN: 1G8ZH5285Y
Customer complains vehicle will sometimes idle fast(2500 rpm). The only code stored is P1624-Snapshot available. The freeze frame data shows that when the fault occured the ect was 180, tps was 0%, and vehicle speed was 70mph. This vehicle has had the intake g... Trouble codes: P1624 (Snap shot available)

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Park Avenue Ultra 3.8L Hesitation, MIL Lamp on VIN: 1G4CU5215T
Thanks to those of you who replied and the information on testing and cleaning of the MAF sensor. I should have told you all that I keep a good selection of used sensors to try and changing the sensor on this car made no difference. I reread the manual and was... Trouble codes: P0102.
2001 Buick LeSabre Custom 3.8L power door locks VIN: 1G4HP54K51
We sent the car to the local dealiership and they found a broken ground wire to rear integation module.
1990 Cadillac DeVille 4.5L Speedometer VIN: 1G6CD5330L
Thanks for the help.After finally getting a gm parts guy to get prom by serial number we got the proper prom. There are two proms that go with the analog dash but we were sent the wrong one first. After installing proper prm speedometer no longer reads twice a...
1995 Cadillac DeVille 4.9L rear knuckle upper bushing VIN: 1G6KD52B6S
Thanks for the responses. Unfortunately there is still no fix for this problem. I have spent hours on line looking for an answer. The wreckers in this area tell me that the bushings are the first to go. They will sell me a knuckle but no gaurantee the bushings...
1997 Chevrolet Venture 3.4L fuel pump cooling fans VIN: IGNDU06E4V
Fuse and relay box under hood right side above battery shorting out internally causing fuel pump and cooling fans to come on with vehicle shut off, full of moisture,corroded terninals.
1997 Chevrolet K3500 7.4L shift VIN: 1GCHK3379V
pulled pan off found the 2-3 and 1-2 solenoids broken, replaced and checked for power. had power to all solenoids. test drove shifted great for about 3 miles back to the same thing. pulled pan 2-3 shift solenoid is spread open, not broken though. pulled valve ...
1998 Chevrolet Cavalier LS 2.2L Warning Lights VIN: 1G1JF5245W
Hi guys, Well, most everyone was right when they said to check the alt. It was weak and I figured it was due to some bad connections I had found. It was replaced with a new one and all cleared up. Its amazing what some electronics will do if they aren't fe...
1999 Chevrolet K1500 Suburban 5.7L Actuators - all VIN: 1GNFK16R4X
Thank you all for your input. The customer has not yet committed to repairing this problem, so I'm posting a summary. Some folks pointed out the need to verify voltage and ground circuit integrity, and some had seen flex breakage in wires in the harnesses goin...
1999 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 1GCEK19T8X
i took out the carbon canister and cleaned out real good, also blew air threw the lines and cleared codes, seems to work fine now, or at least no call from customer, thx for all the help Trouble codes: P0446.
1999 Chevrolet S10 2.2L Misfire VIN: 1GCCS144XX
All fuel trim and o2 sensors are normal, slight lean indication during the event but other than that cross counting and steady increase in p/w. this vehicle has NO EGR is a perfect misfire and consistent at 2,000 rpm. 80 % throttle. the tps is a perfe... Trouble codes: P0300 (random misfire).
2005 Chevrolet Silverado 1500 5.3L brakes VIN: 1GCEK19B35
Well Frank and a number of others were right. Amazing what a 1/64' brake drum retainer clip can do! Removed them, retorqued the wheels and all seems well. Two happy people! Thanks for everyone who gave replies. I tried to personally respond to evey email. Forg...
1999 Oldsmobile Alero GLS 3.4L abs VIN: 1G3NF12E9X
well customer needed car back, so after getting some help, i called customer and told him to disconnect his power wires for his aftermarket radio & neon lights to see if that would help, he called back 2 days later and said it was working fine, i havent heard ...
2001 Saturn SL2 1.9L Poor Idle Quality VIN: 1G8ZK5279Z
well it was the tps i should of known what was going on but i was rushing. so thanks to all the replies, what was happing is the tps voltage was ranging from .42 to .59 at closed throttle and the computer was opening the iac to act as a dashpot, thanks again t...
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