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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 17, 2009
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Open Help Requests for GM
Help Request Answers
1996 Buick LeSabre Custom 3.8L Cuts out VIN: 1G4HP52K3T
This Buick will occasionaly cut-out while cruising at freeway speed. It lasts for less than 1 second. It feels like you just turn the key off then right back on. No CEL or codes stored. It happens intermittantly and sometimes can be driven 10+ miles and not ac...
1999 Buick Regal GS 3.8L Cuts out, Stall VIN: 2G4WF5212X
I am not sure of the amperage rating for the fuel pump, I suspected that the fuel pump is drawing to much and causing the Fuel Pump ballast resistor to fail. I checked the fuel pump amp draw, is at 7-8 amps running, when the problem occurs, I jump the ballast ...
1974 Chevrolet Caprice Classic 5.7L Lighting VIN: 1N39R40130
Hi All,This car is in the middle of a restoration and needed turn signal and marker lights wiring hooked up.Got the folks at alldata to email me a wiring diagram got it all hooked up and now when you have headlights on give a turn signal you can see a slight b...
1996 Chevrolet Tahoe 5.7L window motor VIN: 2GNEK13R4T
I am about to replace frt door window motor when I realized manual says it is part of regulator aasy. Motor is available from parts store seperately. I read in a post that motor is now sold seperate from gm. However there seems to be a question as to the neede...
1999 Chevrolet K1500 Suburban 5.7L Hesitation VIN: 1BNFK16R8X
no misfire counter. even if i induce a misfire. it has a hesitation on mod to heavey accleration. it fells like its running short on gas. o2 sensor readings are in the 800 to 900 hundreds. maf grams around 190.it will not act up by power braking in shop. ive t...
2000 Chevrolet Blazer LS 4.3L ABS Pump/Sensors VIN: 1GNDT13W3Y
when driving speedo reads correct. as soon as you get below 10 mile speedo drops to 0 and trans stops shifting. rear and right front ABS sensors both drop at 10 miles to 0
2003 Chevrolet Venture LS 3.4L Poor Idle Quality VIN: 1GNDX03E53
vehicle came in with customer complaining of a sail on condition while driving.engine will race up and stay high upon start up or after a drive.ran pinpoint tests for both codes came up with bad tps.the iac had been replaced recently. the problem i am having w... Trouble codes: P0122, P1122
2004 Chevrolet Impala 3.4L No Start VIN: 2G1WF52E44
This vehicle is a no start anytime - Have checked all powers & grounds - labscoped crank and cam sensors signals at PCM and they are good - replace PCM thinking it had a bad circuit internally and had it programmed by the dealer= still no start - tested igniti...
2006 Chevrolet Trailblazer LT 5.3L Starting VIN: 1GNET13M46
ran a relearn for theft deterrant still no start no crank checked power train relay relay okay but their is no power at fuses 28 ecm1 27 back up 22 ingition e 20fan 18air bag 16 tbc ingition 1 17 crank btsi on both sides of fuses scan tool indicates no responc...
2007 Chevrolet Silverado 2500 HD Classic WT 6.0L wipers VIN: 1GCHK29U37
hope you GM techs can help this truck blows #37 25amp fuse in the ls underdash fusebox(ls door jam) in the last 2months its blown twice and I cannot get it to blow driving all this week this vechile doesn"t have heated washer system so the fuse only controls w...
1999 GMC C6500 7.4L Cuts out, Misfire VIN: 1GDJ7H1D8X
I have this GMC 6500 truck that is giving us BIG issues! First off this thing is Coil Near Plug.. Its is a 7.4L vin D. At first it would run bad all the time.. backfiring and missing like crazy! It then stalled and would not restart. When looking at it found t... Trouble codes: P0336 (CMP Performance)
2001 GMC Sierra 2500 HD SL 6.6L convertor/pump VIN: 1GTHK29151
This unit is turning into a nightmare.. customer brought truck to us because the transmission was still leaking after being repaired at a different dealer while on holidays. Fluid found comming from bell housing area. I removed the trans and replaced the t/con...
2006 GMC Envoy SLT 4.2L noise VIN: 1GKDT13S76
WOW got a wierd one a rotational noise once on cold start only,, will not repaet till next cold start,, sounds similar to bendix stuck in but held hand on starter nothing almost sounds hydraulic rotational help!!!
2004 Pontiac Grand Am SE 2.2L No Start VIN: 1G2NE52F24
thank you in acvance for your help. vehicle was towed in yesterday for no start. fuel pressure was low so we replaced fuel pump for second time. fuel pressure returned to opperating spec. vehicle started and ran for a few seconds then shut off. now will not re...
1998 Saturn SL2 1.9L Surge, MIL Lamp on VIN: 1G8ZK5276W
we have this car in, following the flow chart for p0341. the code is active the engine runs fine, says to remove j3 connector at PCM and remove circuit 633. reconnect to PCM and start engine for 1 min, with pin out of harness. ask if p0341 set and it dose not.... Trouble codes: P0341, P0404, P1599, P1624
2005 Saturn Ion-1 2.2L Power steering VIN: 1G8AJ52585
Power steering becomes very stiff intermittantly. Switch Vehicle off and restart (as per customer instruction) and steering is back to normal.This is a strange one for me, not familiar with the system,i didnt want to tackle until i got some info from you guys ...
2006 Saturn Vue 3.5L steering wheel VIN: 5GZCZ63476
Customer came in for new tires and a complaint of brake pulsation intermittent, we checked front wheel bearing due to being loud and replaced it,drums were replaced due to rear pulsation no front end brake pulsation felt from front rotors and front end very ti...

Fixes & Summaries for GM
Fix/Summary Answers
1990 Chevrolet K1500 Cheyenne 5.7L pcm VIN: 1GCDK14K4L
Thanks to all who took the time to offer an opinion. I did not try relocating the knock sensor. I did like your idea Joe about advancing the timing. I set the timing up about 4 degrees at a time, the truck ran great, however I could never get the engine to det...
1997 Chevrolet Astro 4.3L Speedometer Odometer VIN: 86BNHM9471
All other gauges work. Finally had it acted up at the right time. The vss signial at pin B14 at the IC dropped out. Owner did not want to pull harness from dash so ran new wire from VCM to IC. Odometer is working and speedo leveled out. Checked a bit of h...
1998 Chevrolet Prizm 1.8L Excessive Emissions VIN: 1Y1SK5289W
After re-diagnosis and getting feed back from you-all (thankyou), and still not finding anything wrong with the emmissions system I called the customer for more information about any recent repairs. He told me that he had replaced the Thermostat recently. I as...
2001 Chevrolet Cavalier 2.2L engine VIN: 1G1JC12431
Vehicle is fixed. thanks to brandon. we changed the fuel pump and the vehicle has not had a problem since. thanks again to all.
2002 Chevrolet Blazer Xtreme 4.3L instrument cluster VIN: 1GNCS18W62
Thank You to all that responded.I wish I could say for sure the vehicle is fixed but could only tell you that I have not heard back from the customer and will have to assume it is repaired.What I had done based on suggestions from all the technicians who repli...
2003 Chevrolet Astro 4.3L door locks, dome lamp VIN: 1GNEL19X33
Thanks for all the replies, as it turns out the sliding door jamb switch was the culprit, the head of the switch was actually broke off, someone likely hit it getting in the back seat, new switch and all is well, thanks again for all the help! Mark
2003 Saturn Ion-1 2.2L Lighting VIN: 1G8AF52F83
Got this one fixed. I should have been able to find this myself but it was one of those days that just keeps on coming at you and I was running out of time. I have a number of other vehicles in line so I needed your help. What finally turned out to be the faul...
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