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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 23, 2010
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Open Help Requests for GM
Help Request Answers
1995 Buick Park Avenue Ultra 3.8L starts and dies VIN: 1G4CU5219S
Customer complains of starting/dying codes for passlock stored in ecm. Installed resistor in harness at passkey module to bypass key/tumbler. Car worked fine for a couple days, then reset codes p1626, p1629 and starts/dies intermittently. The customer doesn't ... Trouble codes: P1626, P1629
2000 Buick Park Avenue 3.8L Starting VIN: 1G4CW52K8Y
this car has a no crank on start if i turn the key on and jumper the starter sol. will start and run for a few seconds i have checked voltage on ing sw and all check out ok the yellow from ing sw to rear fuse block crank fuse has 12 volts. out of the crank fus...
2003 Buick Rendezvous CXL 3.4L Abs VIN: 3G5DB03E53
We have a 2003 Buick Rendezvous that has intermitant abs activation. When this happens the pedal pulsates, and the system has little braking effect. The rotors, wheel speed sensors, and pads have all been checked. When the problem occurs the rear inlet valve o...
2004 Buick LeSabre Limited 3.8L battery VIN: 1G4HR54K94
i have a batery drain of 1.82 amps (after 30 minutes) when disconnecting fuse 37 (hvac battery) or i.p. module under dash the draw goes away. tried a used ip module out of same car but no help drain is still there.do not have a tech 2 to check module status.
1992 Chevrolet S10 Blazer 4.3L speedometer VIN: 1GNCS13Z8N
i am working on a 92 s-10 blazer and the speedometer is non operational. trans speed sensor has been replaced and has no change. speedo reads 85 mph and was informed that it has been beyond that speed many times. any help would be great
1993 Chevrolet K1500 Silverado 5.7L Speedo and ECM VIN: 2GCEK19K5P
This one has me going in circles. Vehicle came in with no speedo and check engine light on with code 24 (VSS). Checked the VSS and it was open. Replaced VSS and still no speedo signal. Ran diagnostics had power and ground at DRAC module VSS signal varies with ...
1998 Chevrolet P30 6.5L procedure VIN: 1GBH932Y8W
does anyone have the installation procedure for what i beleive is a cam position sensor located at therear of the block where a distributor would go? it has a two wire plug going to it. Does it require timing?
1999 Chevrolet Express 3500 6.5L Excessive Emissions VIN: 1GCHG39FOX
Hello again,I have a probllem with this diesel van. First off this is about the only diesel I work on. I'm not much of a diesel mechanic. This customer, and my boss,insist on me working on it. Well to start with last month I did a head job on this truck, repla...
2001 Chevrolet Express 3500 5.7L Poor Idle Quality VIN: 1GCHG35RX1
Hello, i have this 01 5.7 express van that is giving me a major head ache, originally came in for barley running concern and stalling. Found code p0355 for crank sensor, ran through flow chart for diagnosing concern and all tested ok except jumping between 12 ...
2002 Chevrolet Silverado 3500 LT 6.6L Mechanical VIN: 1GBJK34132
This vehicle started life as a Cab and chassis that now has a ambulance box on it that is used for a construction maintainence vehicle. Customer complains that it doesn't want to stop and brake pedal sometimes goes to floor. Also has abs false activation. Test...
2003 Chevrolet SSR 5.3L Accessories VIN: 1GCES14P43
hi to all i have this 03 ssr that has a roof ajar message on the dash we haven't worked on one yet we checked the switch it seems to ck ok i was wondering if there is any common problems with this roof before we get into it thanks in advance jeff
2004 Chevrolet Silverado 2500 HD WT 6.6L No Start, Stall VIN: 1GCHK23114
Customer states that engine deied while driving, Towed in. 08/22/10. Sat over night, Engine still would not start, checked and found no codes in system. Performed Engine cranks but won't run chart in simptoms. KOEO fuel pressure at Fuel rail is at .5 should be...
2005 Chevrolet Trailblazer LT 4.2L Accessories VIN: 1GNDT13S45
Vehicle came in with the speedometer reading 60 mph at idle and 100 mph with the engine off. Diagnosed and found the instrument cluster bad. Going to replace cluster on Monday. What I was wondering if there are any tips on programming the cluster. Got a new te...
2006 Chevrolet Silverado 1500 LS 4.8L Starting VIN: 3GCEC14V56
This Chevy pickup truck will not cut off with the ignition key once every other day. We installed a new ignition switch from GM last week. The problem is still there, the owner is removing the ECM fuse to shut the truck off. The part we replaced is the "electr...
2003 GMC Envoy SLT 4.2L starter VIN: 1GKET16S93
Vehicle was towed into our shop with a no start. Vehicle will not come out of park. Customer said she was leaving a parking lot and before she got out it stalled out on her. No power going to starter. Ign A fuse 34 ok, relay ok, and crank fuse 17 ok. No power ...
1989 Oldsmobile 98 Regency 3.8L No Start, Cuts out, Stall VIN: 1G3CX54C8K
This is the second go around with this vehicle with the same symptoms. You can view the first one on iATN and that turned out to be a broken ground wire at the bolt under the ICM. Vehicle came in with a no start condition. Sat on lot for 2 days before I could ...
2000 Saturn SL2 1.9L passlock VIN: 1G8ZK5273Y
this car is a friend of mine, his ignition key would not turn in column. So I installed a used steering column for him...now it is a crank but no start.code b2960, tried the passlock relearn procedure, left key in on position for 10min...securiy light went off...

Fixes & Summaries for GM
Fix/Summary Answers
2005 Buick LeSabre Custom 3.8L a/c compressor VIN: 1G4HP52K25
I have been unable to reach the customer to get the car back in the shop. But while I did still have it I did find that the condensor was partially plugged. Once I can get the car back in and check it over I will update everyone. Thanks
1995 Cadillac DeVille 4.9L Driver Info. Center VIN: 1G6KD52B8S
closing this help request due to customer not returning with vehical in a timely manner.will post additional information if and when customer returns.thanks to all who replied , your help was appriceated...
2006 Cadillac SRX 3.6L 1-2 Shift Solenoid VIN: 1GYEE63776
Thanks again to all the guys for help,turned out to be the wireing harness that runs on the right firewall down to the transmission. The harness was lying on top of the cat converter just touching it. It just goes to show I should have stuck to the basics an...
2000 Chevrolet Venture 3.4L starter VIN: 1GNDU03E7Y
sorry but when I pulled the cover from arround the ign. switch I noticed the pass key III halo around the key entre. The customer was using aftermarket keys with transponder in it. we went back to the original key and it works fine every time. thank you for al...
2001 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNCT18W51
Replaced fuel pressure sensor and vent valve - customer hasn't come back yet so it must be OK - Thanks to everyone for the help! Trouble codes: P0440 (Evap System Pressure Too High).
2001 Chevrolet Monte Carlo SS 3.8L blower, DIC VIN: 2G1WX15K31
I replaced the ignition switch and cleaned the connector for the blower as it was corroded. Thanks for the replies the help was greatly appreciated.
2002 Chevrolet Trailblazer LT 4.2L Differential VIN: 1GNDT13S52
Hi all we finaly got the defferntial apart 4 chisels and 1 hamer took alot of beating the lower timing gear and crankshaft pin wher prety wornout so we got it pute backtogether had no oil presure now we are tearing it apart again install new oil pump same proc...
2004 Chevrolet Avalanche 1500 5.3L key, starter VIN: 3GNEK12T14
Thanx to all that helped, this one seemed to not be completly fixed after new fuel pump, but settled into its groove later.
2004 Chevrolet Express 2500 4.3L coolant resevoir VIN: 1GCFG29X94
This thing is fixed.I capped off the bottom line on radiator neck.I asked the customer if the vehicle was in an accident.Yes was the reply,front end crash.And it was repaired at the dealership.When we replaced the tank previously we simply replaced it just how...
2006 Pontiac G6 3.5L Air Conditioner VIN: 1G2ZG55896
After reading the replies we added an extra .5 lbs of freon which seemed to help make it cold at first but once vehicle warmed up it went back to same condition. we pinched off heater hoses thinking that maybe the blend doors were allowing air to blow across h...
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