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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 26, 2005
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Open Help Requests for GM
Help Request Answers
2001 Buick Regal LS 3.8L MIL Lamp on VIN: 2G4WB55K11
car came in with no power,cleaned maf,replaced fuel filter{clogged{.did back pressure test and found convertor clogged.installed new convertor obdll compliant.car came back following week with cat eff.code.have no access to gas analyzer any help would be appre... Trouble codes: P0420
1982 Chevrolet Corvette 5.7L long crank time VIN: 1GAY8787C5
We replaced the fuel pump to cure a 9 psi fuel pump output. The car starts and runs ok now but we can't remember if the TBI units are supposed to hold fuel pressure at rest or whether it is normal for them to bleed off through the regulators. We've checked all...
1995 Chevrolet Caprice Classic 4.3L a/c compressor VIN: 1G1BL52WXS
I have a 95 caprice which will set code 71 evap temp sensor which this car is not equiped with.No info in alldata and mitchell about code 71.The computer will not ground a/c relay, I know some sensors for engine controls will enable computer to ground a/c rela...
1995 Chevrolet C2500 Cheyenne 5.7L Excessive Emissions, Hesitation, Stall VIN: 2GCFC29K3S
When the pickup coil incident occurred the Engine ran very erratic which caused Catylytic Convertor to overheat and Glow Red all the way up to the exhaust manifold. The Intake manifold gasket had started to leak it was done as maitenance Item. The recent tuneu...
1999 Chevrolet Tahoe LS 5.7L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GNEK13R4X
Hello Techs, having a hard time with this one codes po1133 b1 s1 no activity code po1153 b2s1 no activity this is verified on genysis and snap on scanners have checked usual culprits no restrictions in air cleaner, fuel pressure and volume are fine no vac leak... Trouble codes: P1133, P1153
2002 Chevrolet Trailblazer LS 4.2L elec windows VIN: 1GNDT13S82
power windows,radio,not working, a/c buttons wont light up or activate.heater blower works.can't find fuse or relay controlling system. not sure where to look from here.came in with dead battery,charged and starts and runs fine.alternator charging ok! thanks,...
2002 Chevrolet Silverado 3500 6.6L engine VIN: 1GCJK391X2
there is a sqeel or scrapping noise coming from engine at first was load related under heavy load the noise was there and when u let off it would go away or quite down so checked serp belt and pullys found idler bearings had play replaced still there same load...
2002 Chevrolet S10 LS 4.3L Electronic VIN: 1GCDT13W02
Hello all this vehical is my sons seems the kids can drive better vehical than me but cant afford to fix them. this started while driving down a bumpy road of corse at slow speed??? the ses light came on trans did funny things dash speedo , tach , fuel guage t...
2004 Chevrolet Trailblazer LS 4.2L Misfire VIN: 1GNDS13S74
Hello techs I have a head pain with this, this truck have been buyed flooded, I have changed many things and now everything it's fine except this problem, I have repaired one piston and the valves, I have put the timing chain as the gm manual says but I have t... Trouble codes: P0016 (Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor A), P0300 (Random misfire detected), P0301 (Misfire on cyl 1)
2005 Chevrolet Colorado Z85 LS 3.5L Mechanical VIN: 1GCDS136X5
this is wierd this is my personal vehicle it has happen a few times within the past couple of months. after driving for long periods of time 2-4 hours turn truck off and crank/no start let sit for 5-10 mins starts up fine no promblem. this has only happen 2 ti...
1987 Oldsmobile Delta 88 Royale 3.8L Excessive Emissions, Poor Idle Quality, Stall, Poor Fuel Economy VIN: IG3HY5435H
Good evening, I am sitting in my office going over my techs results and finding for this 87 Delta 88. I have searched the "Fix archives" for this problem and although I have found several similar complaints, none have fixed this beast. The car runs well until ...
1998 Oldsmobile 88 Royale 3.8L Electronic VIN: 1G3HN52K4W
IATN I have an Olds that the a/c shuts down on. Blower, compressor, and all will stop. Customer can slap the dash and it all starts back up. I replaced the dash control unit with the switches. This is a MANUAL SYSTEM. I have removed ground 210 and cleaned it I...
1995 Pontiac Grand Prix SE 3.1L fan VIN: 1G2WJ52M6S
Vehicle came in with over heating problem. After obvious repairs, the vehicle ran fine, idled fine. Returned to customer. Two days later, was brought in. Complaint was, engine felt like it was going to fall out of car. Also dash gauges failed while driving sim...
2000 Saturn LS2 3.0L No Start VIN: 1G8JW52R4Y
Hi everyone, This saturn LS2 is in for a no start,again, cranks over fine, no communication with ECU, but have communication with TCM, and BCM and can control instrument cluster through scan tool. There are 22 trans codes, three of them are communication U cod... Trouble codes: 22 (trans codes), U2103 (fewer controllers on bus than programmed), U2104 (can bus reset counter overrun), U2105 (lost communication with ecu system), U2106 (lost comm. with TCM system), U1000 (class II data link malfunction)

Fixes & Summaries for GM
Fix/Summary Answers
1986 Buick LeSabre Custom 3.0L Stall VIN: 1G4HP69LXG
thanks to every one who replied to my problem. after a few tests i found i had a no spark conition. after digging a little further i found a bad ciol pack and a borderline maf sensor. i replaced both and the car is doing fine. thanks again
1990 Cadillac DeVille 4.5L keeps running VIN: 1G6CD1337L
We were never able to get the vehicle to act up. The customer will bring back if it does it again.thanks for the suggestions.
1998 Cadillac Eldorado ETC 4.6L ABS, Steering VIN: 1G6ET1292W
Sorry for the long delay .The car belongs to car dealer who wants it fixed for little or nothing and has paid us for diagnoise it.but wants to find a backyarder to install the wheel speed sensor good luck to both of them.I recieved 3 replies and all three agre...
1999 Cadillac DeVille 4.6L Instrument VIN: 1G6KD54Y2X
Ok let me see how to start this. First, by replacing the lock cylinder I actually created the no start condition. The antitheft system on this car uses the following logic: If there is a fault with the key or the wires on the lock cylinder and the engine is of...
2003 Cadillac CTS 3.2L Service steering system reminder VIN: 1G6DM57N13
Well, I'm going to close this post with no solution. I want to thank Frank & Jeremy for there input...both great thoughts. The customer decided after only one attemp to fix there car, that they were discusted enough in the car that they were trading it off. Wh...
1991 Chevrolet Motorhome 7.4L reverse VIN: 1GBKP37N8M
OKIE DOKIE. I now have reverse BUT am not sure exactly what I did for sure. I recieved many replies with good suggestions. Bottom line is this-- I replace the 2 ring band pin with a 3 ring, also the o-ring at the end of #11 check ball sleeve was pretty flat an...
1993 Chevrolet C2500 Silverado 6.5L HARD START long cran VIN: 1GCGC29F9P
I have not yet been able to get this customer to come back in. I have had some good responses though. oil pressures switchesa re a common problem. battery condition can affect feeder pump voltage, cool injection pump and see if it starts better, compression ha...
1998 Chevrolet S10 LS 2.2L crank fuse VIN: 1GCCS1949W
i found a aftermarket alarm that had a badly taped connection up in the harness
1999 Chevrolet Prizm 1.8L can't fill gas tank
after having replaced the charcoal canister i still had a problem,pulled the fuel tank several times and checked everything. finally figured out that the atmosphere vent tude was not opening after engine shut down,after engine shut down vacumm is released off ...
2001 Chevrolet Tahoe 5.3L fuel gauge erratic VIN: 1GNEK13T11
Thanks for all the great responses, We put a sender in it and the gauge works fine. I guess the movement of the vehicle when it was put in gear was enough to make the sweeper contacts move to a good spot and make the gauge work. Note: We were able to purchase ...
2002 Chevrolet Silverado 1500 4.3L MIL Lamp on VIN: 1GCEC14W62
thanks every one that took the time to help on this one, most of the replies was to replace cat. converter, so we install an oem unit and took care of the po420 code. thanks again. Trouble codes: P0420.
2003 Chevrolet Silverado 1500 4.8L odometer VIN: 1GCEK19V3E
The fix for this 03 silverado dash panel was to replace the dash. I had the local gm deal check it and replace it at a cost of $350.00. I sent email back to the people who took time to respond, except Tim can not find your email address so I will say thanks ...
1994 Geo Metro 1.0L No Start VIN: 2C1MR2468R
got geo metro back this morning, customer said still dying after it gets hot or driven for two plus hours. let run for more than four before vehicle died. checked fuel pressure (19-23psi) normal, spark, injector pulse. befor vehicle did not have injector pulse...
1994 Pontiac Bonneville SE 3.8L Cuts out VIN: 1G2HZ52L7R
First thanks to all whom have took the time to email me info and help on this auto.I checked all the grounds and power circuits to and from ign swx and ecm all good.Did tap test and moved and pulled harness of module,ecm,crank sensor,afm and cam sensor all goo...
2003 Pontiac Vibe GT 1.8L Cooling VIN: 5Y2SN62LX3
Well I am going to call this one a fix. I did not hear from the customer saying that the light had come back on. I want to thank ever one for the help this is def. the best tool in the box.
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