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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 1, 2005
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1990 Buick Century Limited 3.3L Poor Idle Quality, VIN: 1G4AL54N0L
engine is surging at an idle and the ac clutch is trying to engage when all controls are turned off any ideas?
1993 Cadillac Seville 4.6L Poor Idle Quality, high idle VIN: 1GCKY5294P
This 93 Caddy STS was parked for approx 8 months without being used and was fine when last driven at that time. Customer decides he needs to drive this baby again and airs up tires and jump starts. The Northstar starts fine with jump but goes to a really fast ...
1971 Chevrolet Chevelle SS 396CID Electronic VIN: 136371R117
I am looking for wiring diagrams for the A/C compressor and blower system. The blower comes on occaisionnally and the compressor never. i can jump to the compressor and get the clutch engaged but it will only run for about 30-45 seconds and then it shuts off u...
1993 Chevrolet K1500 Cheyenne 6.2L Excessive Emissions VIN: 2GCEK19CXP
hi, this truck had the engine replaced with a remain 2 years ago ( oil cooler line had come off and a new motor got put in) customer complains since then never ran proprely in the winter it used to smoke on start up badly ran rough (white smoke) and then would...
1994 Chevrolet Cavalier RS 2.2L code 27
hi guys need help with this caviler. has reoccuring code 27 and stalls. fixed the stalling by replacing tcc sol.i hoped that would fix the mil. code still comes back, this code is for quad driver error, i talked to the guy that does my trannys and he said that...
1994 Chevrolet G30 Chevy Van 6.5L brake lights VIN: 1GCGG35V6R
I need help on this one. The brake lights would blow fuse regularly. Recently, as soon as you applied brake to shift from park, fuse would blow. I disconnected shift acctuator solenoid and fuse didn't blow, problem solved, so it seemed. Drove van 5 mi. and shu...
1995 Chevrolet K1500 Suburban 5.7L abs VIN: 1GKFK15K4S
This trucks ABS light will come on at 15 mph consistently and go back off as soon as you drop below 15 mph again. The cruise also does not work, they both started acting up the same time so I suspect they are related. My scanner has never shown any codes prese...
1997 Chevrolet Camaro Z28 5.7L fans VIN: 2G1FP22P8V
Vehicle came in with clutch problems and engine gaskets leaking. We repaired all of those problems, replaced timing chain after finding excessive play in it. Now after bleeding all the air from the system, the cooling fans turn on around 192 and stay on and w...
1999 Chevrolet Silverado 1500 5.3L 1-2 / 3-4 shift VIN: 1GCEK19TOX
This vehicle had been sitting in storage for about 3 months prior to being worked on. After preforming a fluid transfusion and trans. filter change this truck still starts out in 2nd gear, shifts fine into 3rd, but doesn't go into the final gear. My question i...
2003 Chevrolet Suburban 1500 LT 5.3L Compressor VIN: 1GNFK16Z53
The customer complaint on this 03 Suburban is that the a/c will go off intermittently. This vehicle has A.T.C. I have not been able to duplicate the complaint yet. I have, however, connected up to the vehicle with a scan tool and have retrieved the following t...
1995 Oldsmobile Cutlass Supreme 3.4L timing belt VIN: 1G3WT32S2S
this car came in with the belt jumped time due to a bad idler pulley bearing. what are the chances of bent valves and what will be the easiest way to check if valves are bent if that is a possibility.
1999 Pontiac Grand Am SE 2.4L Security VIN: 1G2NE12T6X
Car came in starts & dies.Customer ststed that if she left key on until security light stopped flashing car would run.Found codes P1630 & P1632.Not familiar with this system & alldata doesn't give much info. Replaced ignition lock cylinder because dealer said ...
2001 Pontiac Aztek 3.4L battery VIN: 3G7DAO3E21
vehicle came in with low battery, customer had at local dealership twice in last 4 months they replaced battery both times. custmer says after it sets 3 or 4 days battery is dead. i tested electrical system, alt. battery & starter ok. checked for draw ,none fo...
1993 Saturn SC2 1.9L Cooling System VIN: 1G8ZH1574P
We have this saturn with a hard to diagnose cooling system issue. This car will raise the temp to just about hot when on the highway in hot weather above 80 deg. f and a/c will blow warm air. If the car slows down in traffic from cruising speeds to a crawl the...
2001 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW54R51
hello everyone, I need some help from a Saturn person or someone smarter than me. got this L300 with rich codes, fuel pressure is normal, runs great and has very clean 4 gas readings. when checking the fuel pressure regulator we noticed that there was no vacuu... Trouble codes: P0172 (bank 1 rich), P0175 (bank 2 rich)

Fixes & Summaries for GM
Fix/Summary Answers
2000 Buick LeSabre Custom 3.8L Unknown VIN: 1G4HP54K2Y
hi guys,you saved me on this one.17 of the 19 replies said the same thing,that the freon was low.I put the dash back togther and put a half pound in.This really help the temp on the drivers side,so I evacuated and refilled that brought BOTH sides down to 40 de...
1994 Cadillac Eldorado Touring 4.6L shifting VIN: 1G6ET1299R
The cusotmer has decided to sell the vehicle, due to the fact this is the third time for this problem, vehicle has had several computers and harnesses replaced. Thank you for all the great information.
1989 Chevrolet Corvette 5.7L No Start VIN: 1G1YY2187K
Thank you for all your responses 8 new injectors repiared the no start warm
1990 Chevrolet Camaro RS 5.0L tachometer VIN: 1G1FP33E2L
car has not come back in i did find out the part 'buffer' is not available from gm anymore if cust returns will add to post
1993 Chevrolet Astro CL 4.3L Torsion Bar VIN: 1GNEL19W8P
This 93 Astro came in with 41 inch long torsion bars. Right side was broken. The replacement bars are 36 inches long. New adjusting arms are required to install the short bars in place of the long bars. The old adjusting arms needed to be cut out with a torch....
1997 Chevrolet Blazer 4.3L fuel guage, door locks, starting VIN: 1G3NDT13W7
The replies to this Blazer's problems were: -bad ground connections either under battery tray or on left door a-pillar area. -bad alternator/diode (disconnect alternator plug with engine running & see if symptoms disappear) -faulty power door lock switch...
1999 Chevrolet Express 2500 5.7L MIL Lamp on VIN: 1GCGG29R9X
Replaced MAF Sensor and not seen van since. I have not heard back whether the sensor repaired the van. I assume it did, I think I would have heard from them. Thanks for all the help Trouble codes: 102 (MAF Signal low).
1999 Chevrolet Cavalier Z24 2.4L drl VIN: 1G1JF12T5X
thanx to all that replied. my tech found a stretched wire in the loom under the battery tray by the main headlight wiring connector. he repaired the wire and all is fine thanx again kevin
1999 Chevrolet Venture 3.4L Traction control VIN: 1GNDX03E1X
My son and I figured it out this morning. The ABS wire to the right front wheel speed sensor was broken near the plug. A new hub and sensor assembly fixed it. www.newlifeautomotive.com
2000 GMC K3500 Sierra SLE 7.4L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1GTHK39JOY
I had 4 replies. One was restricted cat. It was ok. Two was to adjust the fuel pressure down, but there is no way to know how much. You can not get to the regulator without pulling the intake . Someone suggested milking the regulator but you can't remove the v... Trouble codes: P0175.
2002 GMC Envoy SLE 4.2L fan motor VIN: 1GKDS13S32
Thanks again to IATN.Mike [...] hit it on the head ended up being the ignition switch.I did see a reply about ignition switch but said problem occured when abs and brake lights in dash were on.This vehicle would lited abs and brake lights in dash but it stil...
1988 Pontiac Firebird 2.8L No Start VIN: 1G2FS21S7J
Thanks to ALL for their Help on this.The fix was a bad ignition coil.The ignition module was not being powered up through coil.Many replies was to check to make sure module had power-THAT WAS WHAT I WAS MISSING-Thanks again gang.
1995 Pontiac Bonneville SE 3.8L engine VIN: 1G2HX52K2S
Sorry it took so long for a reply. The customer had me on hold deciding if he wanted to repair or junk the car. He decided to junk it therefore I am not sure what was going on. With all the great reply's I wanted to figure this thing out. I hope all the reply'...
2002 Pontiac Bonneville SLE 3.8L gauges, DIC, Remote, HVAC, Radio, windows VIN: 1G2HY54K52
Hi Techs, We were able to fix this vehicle. We found a bad battery that was causing this problem. The reference to a TSB in one of the replies sent us on a second TSB seach. In doing so we found TSB 02-06-03-006A. We failed this battery for a dark hydrometer e...
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