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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 8, 2009
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Open Help Requests for GM
Help Request Answers
2002 Buick Rendezvous CXL 3.4L Unknown VIN: 3G5DB03E73
We have a rendexvous with a noise while driving at cruise and slight tip in throttle. The noise is hard to describe I would say between and growl and a rattle. The noise is only present at tip in throttle in fourth gear. Noise will happen for a second and go a...
1989 Cadillac Eldorado 4.5L Poor Idle Quality, Hesitation, Stall, Misfire, hard start VIN: 1G6EL1157K
Hello Cadilac techs. I have a 1989 elderado that is have issues starting and has an extreamly rich idle. Using a snap on scan tool I determand that the computer was not getting an input from the colant temp sensor mounted on the back clyinder head. I have test...
2005 Cadillac Escalade 6.0L ride control VIN: 1GYEC63T05
does steering sensor effect ride control. does BCM need reset after replacing steering wheel position sensor
1985 Chevrolet Corvette 5.7L Misfire VIN: 1G1YY078XF
This vehicle has a misfire under load and higher rpm,sounds like backfiring up intake.Checked all injectors,compression 160 psi equally,check exhaust for back pressure ok,fuel pressure ok and not dropping off,checked cam lobes and valve springs ok.Drove with M...
1996 Chevrolet C3500 5.7L delay going into rev. from park or ne
rebuilt tranny, and now has delay going into rev. tranny holds gear after delay. gos right into drive but delays going into revs. pressure is low intell i snap the thottle 3 times and then holds 85psi in revs. after doing that no delay to revs from netrual. bu...
1999 Chevrolet K1500 Suburban 5.7L No Start VIN: 3GNFK16RX1
constant fuel pump failures 3-6 month life span. once pumps are replaced fuel pressure is within specs. and there is no fuel pressure drop off.any sugestions would be helpful.
2000 Chevrolet Impala 3.8L Stall, VIN: 2G1WF55K9Y
This car starts and stalls when cold. Once started it runs fine. We replaced plugs, wires, and coils. IAC was cleaned. Fuel pressure was checked and injector pulse too. It has returned a few times after we though we had figure it out. Fuel trim values look nor...
2002 Chevrolet Trailblazer LS 4.2L Mechanical VIN: 1GNDS13S92
Removed valve cover to inspect timing chain. No problem found with chain or guides. Found no.1&5 intake values bent. Can someone help me figure out why?
2003 Chevrolet Avalanche 1500 North Face 5.3L Compressor VIN: 3GNEK13T33
Thank you in advance for your help with this one. I have this truck sitting in garage right now without working A/C. When the A/C button is pressed the snowflake icon flashes 3 times then goes off with no compressor engagement. I checked system pressure and al...
2003 Chevrolet Trailblazer North Face 4.2L security lamp VIN: 1GNET16S03
I replaced the ignition switch on this, and now the truck starts and runs fine. I now have a constant "Security Light" on. (Not flashing). I'm a bit leary of having the wife take it anyplace, because I am concerned it will leave her stranded. (Uh Oh, WIFE'S tr...
2004 Chevrolet Impala 3.8L door locks interior lights VIN: 2G1WF52E14
20 amp pwr door lock fuse intermitent blown. when this happens interior lights and key fob don't work. on this last occassion the vehicle would not crank on saturday. started right up monday. customer parks and locks vehicle with key fob and upon return vehicl...
2005 Chevrolet Silverado 2500 HD 6.6L Vent air temp. VIN: 1GCHK23225
Kind of a funny thing. Start the vehicle then while driving, HVAC set to fresh air, temp at 60, a/c off, outside ambient temp.60ish, air flow from vent will change to heat without any indication or command. turning a/c on does not change the issue. Start th...
2003 GMC Envoy SLE 4.2L running VIN: 1GKDT13543
Hi to everyone, hope you can help me. Car came in runnining in safe mode codes P1271A , P1635A. Went thriugh alldata for the APP checks came down to replace pedal , no luck. All fuses good relays are good, I am now looking for broken wies in the harness. Found...
2003 GMC Envoy SLT 4.2L ipc VIN: 1GKDT13S43
Customer came in with complaint of dash board lights up and or all gauges go dead, something starts dinging. Truck runs fine, no problem starting. has been going on for sometime now aprox. 6-12 mos. Changed the ign. switch no change. Some people point toward I...
2006 GMC W4500 Forward W4S042 5.2L Poor Idle Quality, Hesitation, Misfire VIN: J8DB4B1636
Hi Everyone, The Fuel Rail Pressure Is Having Trouble Staying With The Commanded Fuel Rail Pressure. I'm trying to command the fuel rail pressure to max with a Tech2, but the option is not there. I've done it on light-duty GM trucks. Any suggestions as the flo... Trouble codes: P0088 (Fuel Rail Pressure High), P0183 (Fuel Rail Pressure High)
1997 Oldsmobile Bravada 4.3L transmission VIN: 1GHDT13W1V
i have a bravada with an unusual problem, when the key is on and you manually put it in 3rd gear the car will start on its own. if you already have it running and put it in 3rd gear the starter will engage. it only happens in 3rd, starts normally in park and n...
2003 Pontiac Aztek 3.4L abs VIN: 3G7DA03E33
Any GM techs, while driving, when ever veh. gets to 12 too 15 mph abs pump run as in self test, but it happens every time, if you slow down then speed up,.no codes. Using a snap-on modis. Watched speed sensors while another tech drove. Recorded event and graph...
2000 Saturn LS2 3.0L MIL Lamp on VIN: 1G8JW52R4Y
Sorry for not having the exact code numbers for you, this is actually being worked on by another shop, and I have been there trying to help him. The story from the customer is that he was driving down the road and it quit. He tried restarting it, it eventually...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Chevrolet S10 2.2L engine VIN: 1GCCS1440W
After many hours and tests to get this truck running, it turned out to be just an ignition switch. Once we replaced that, it starts and runs fine all the time.
1999 Chevrolet K2500 5.7L ignition switch VIN: 1GCGK24R3X
Thanks for all the replies , I ended up just trying a new lock cylinder and it worked the old cylinder was sloppy . i didn't take apart the column to check the gear alignment mainly because in all pix i could find they didn't looked adjustable . thanks again f...
2000 Chevrolet Venture 3.4L Fuel gauge VIN: 1GNDX03E9Y
Thanks to all of you for your replies, the van is still not fixed. Ran independent wiries from PCM to sender, no change. Tried new cluster, no change. Tried ne PCM, no change. Have pretty much determined it to be in the serial data line between the PCM and...
1999 Oldsmobile Alero GL 3.4L readiness VIN: 1G3NL12EXX
we thought we checked all the wires from the IAT to the pcm but after many replies to check the wires IN the connector we did and found a broken wire that did not show unless you pull the rubber boot off the connector . a neww connector and sensor and all is ... Trouble codes: 0113.
1994 Pontiac Grand Am SE 2.3L Excessive Emissions, Poor Idle Quality, Stall VIN: 1G2NE1532R
SO THIS ONE IS FINALLY OUTTA HERE! I put a crank sensor in it because it threw a crank sensor code finally. That solved the "running like it was out of time" problem. Then, oh a whim, i replaced the ignition stuff that the other shop had replaced--distributor ...
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