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Prev Professional Automotive Repair Technical Discussions for May 21, 2009
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1999 Buick Regal GS 3.8L power loss on accel. VIN: 2G4WF5219X
Hello all; I have this supercharged Regal that came in with a flashing Mil, and an obvious misfire. Found several spark plugs with carbon tracking down the sides. Replaced plugs and wires (ac delco irridum). Now idels and drives great until you try a harder th... Trouble codes: P0300
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1999 Cadillac DeVille 4.6L cluster VIN: 1G6KD54Y5X
customer complaint digital dash blanks out. when you put left turn signal on cluster goes blank.with left blinker on and you put headlights on dash comes back to life. also hvac system comes on by itself intermitently. also varius warnings flash on ip air bag ...
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2001 Cadillac DeVille 4.6L Cuts out, Stall, MIL Lamp on VIN: 1GN45379ID
hello fellow techs... thx in advance...here we go... i did motor & tranny swap in this deville... it starts 1/2 second only ... crank the hell out of it runs 4 a minute or so then stalls... when running revees up nice...seems decent otherwise...its setting cod...
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1994 Chevrolet S10 4.3L Clutch VIN: 124D982399
Still having trouble with this S-10. Drives fine when cold buy when hot, shiftiing is difficult, and reverse grinds. Not fully disengaging All new components and bled fine as far as i can tell. Pumping clutch pedal does nothing? Thanks Guys!
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1995 Chevrolet Lumina LS 3.1L abs lights VIN: 2G1WN52M7S
customer states he has replaced steering column ??? also the a b s control module scaned system at shop other than emmisions... no codes present vehicle says it has not been wrecked at any rate...check body grounds no problems present.. before we go any fu...
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1995 Chevrolet Corvette 5.7L a/c VIN: 1G1YY32P9S
the usual a/c service did not improve cooling, after evac and service had same results. Then pinching heater hose began to cool really good. Blend door is operating but door is not closing completely. I realize that I will have to go in to locate issue. Just w...
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2001 Chevrolet Impala 3.4L No Start VIN: 2G1WF55E31
Thank you in advance for your help! I have an Impala here cranks but will not start. Runs on carb spray, I have 55 psi fuel pressure, but dosen't have very good volume? (not sure) No codes in BCM & no security light. It does have P1189c Oil pressure ckt. I al... Trouble codes: P189
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2001 Chevrolet Silverado 1500 5.3L Hesitation VIN: 2GCK19T7Y1
Thanks in advance for you time. Truck when started cold will stumble as you step on throtle feels like has no fuel but you can throtle past the stumble and you can only get it to act up for the first 15-30 seconds then seems fine. I have watched scan tool when...
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2001 Chevrolet Silverado 1500 4.3L Cuts out VIN: 2GCEC19W61
customer came in with a stumble or a hesitation at steady drive and at accel. found bulliten for timing chain too loose causeing same problem. change timing chain,gears,and tensioner. fix it for a day. change crank sensor better but not fix still does same thi... Trouble codes: P0335 (not detecting crank singal for three seconds)
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2002 Chevrolet Impala LS 3.8L traction control system VIN: 2G1WH55K52
Hello everybody. We have this Chevy Impala in our bay with a Traction Control light on. It originaly was a history code every time we went to check it out. Now it has became a current code and the customer wants to deal with it. We pulled the code (1218 - Mot...
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2002 Chevrolet Suburban 1500 LS 5.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEC16Z82
Any help appreciated. My technician is stumped. Trouble codes: P0300
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2003 Chevrolet Silverado 2500 HD 6.6L Poor Fuel Economy VIN: 1GCHK23163
gm diesel has been quiet and good on gas when first bought. after injectors went out and was warrantied by dealer a year ago. truck sounds more like a diesel unlike before. gas mileage has gone down and engine oil doesnt turn black at all. oil looks like its b...
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2004 Chevrolet Blazer Xtreme 4.3L ignition switch VIN: 1GNCS18X14
Hey guys i need some help with a 2004 blazer.It will intermentenly when you shift the car from drive to park the key will not turn all the way off.This problem rarely happens once every 10-12 times you drive the car with several shifts from drive to park.Any h...
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2000 GMC Jimmy SLS 4.3L No Start VIN: 1GKCT18W0Y
This truck is a no start. to make it simple, the spark is fine, no fuel. The fuel pressure is 60-68lbs but the injectors aren't pulsing. Add fuel the truck will start and die. No vltage to injecters. New Ecm. Any help is greatly appreciated. Thanks in advance,...
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2001 GMC Yukon XL 1500 SLT 5.3L Poor Idle Quality, Hesitation, Cuts out, Poor Fuel Economy, MIL Lamp on, HARD STARTING VIN: 1GKFK16T11
Vehicle is hard to start because of bleed down of fuel pressure. When started, idles rough. When taking off and accelerating vehicle cuts out (bucks - jerks). Occassionly on flat at high speeds will feel it cut out, not consistent though. It will buck and jerk... Trouble codes: P0453 (testing and results)
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2004 GMC Yukon SLE 5.3L Power Seat/Heated Seat VIN: 1GKEK13Z04
This is a leather power and heated driver seat(passenger is different). Both seat and heater stopped working at the same time. Checked fuses under hood and driver side fuse block, all good. Checked power and grounds in and out of power seat switch, all good. C...
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2002 Saturn Vue 2.2L No Start, Stall VIN: 5GZCZ23D12
This car will every once in a while start and stall. I finally got it to act up, and it will start up and then stall immediately. When it stalls, the security light will flash for a second, and then go out. A second try, and the car will usually start. The cus... Trouble codes: P1599 (Engine stall or management)
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2003 Saturn Vue 3.0L noise VIN: 5GZCZ63B13
Customer came into the shop with a noise in the motor when throttling up. This is a click that can be heard when you punch the gas pedal. It sounds like it is coming from the front inside the intake. After pulling upper plenum cover I found that the noise may ...
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2005 Saturn Ion-3 2.2L MIL Lamp on VIN: 1G8AL52F55
Hello again and thanks in advance to all of you who respond to this tech help request. This saturn was towed in and customer stated the it would not take off. When the vehicle came of the tow truck, it drove and shifted perfect. The ses light was on with the c... Trouble codes: P2122
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Cadillac DeVille 4.6L No Start VIN: 1G6KD54Y1W
this one had a bad pcm. covered all bases and looked into the fuse blocks and connectors by the strut tower, disabled the pass key, checked all powers and grounds, ohmed all injectors ok. this pcm had just up and quit. installed a used pcm and programmed using...
16
1956 Chevrolet truck 5.7L Accessories VIN: 3A56L00454
There where two problems, the first was the wiring diagram was wrong for the brake switch to pin G. I had it backwards, it has to be open with the brake depressed and it needed the center brake light wired in (hidden under the dash now). It has to see the draw...
5
1970 Chevrolet c-10 250CID horn,engine temp VIN: CS140SL061
all that good information sent in by all the members really help out.my sons truck is put together after two years. thanks to all from me and my son[17]the electrical is together
4
1995 Chevrolet K1500 5.7L Lack of power VIN: 1GCEK14K35
Hi all. First, I would like to thank all those that took the time to reply to my help question. Has of right now, the vehicle is still not fixed but not from lack of trying. The customer is reluctant to spend anymore money of truck but after showing him the em...
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1996 Chevrolet Lumina 3.1L No Start VIN: 2G1WL52M6T
WELL THIS ONE IS FIXED/ IT TURNED OUT TO BE A BAD ECU. INSTALLED REMAN ECU AND THE CAR IS RUNNING PERFECTLY
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1997 Chevrolet S10 2.2L Poor Idle Quality VIN: 1GCCS1443K
Customer decided to but the vehicle and try it for awhile. After we put the new O2 in it and drove it, the idle quality improved but never got where we wanted it. I ruled out injectors since the flow bench i have passed them with flying colors. Regulator was g...
7
1998 Chevrolet Blazer 4.3L Excessive Emissions, Hesitation, Cuts out, Stall VIN: 1GNCS13W3W
Well its still a mystery. And not to be rude but every bit of info I recieved was not helpful at all. Its no fault of any of you guys I appreciate the help. So with that being said Im gonna keep plugging away. Ive actually found where someone has been hacking ...
10
2002 Chevrolet Trailblazer LS 4.2L No Start VIN: 1GNDS13S02
I have yet to come to a conclusion of what is causing this problem. I don't have access to this vehicle everyday, so this is taking longer than expected. I will post the final results if/when I fix this vehicle.
12
2002 Chevrolet Astro LS 4.3L Misfire VIN: 1GNEL19X82
I DID A CYLINDER LEAK CHECK ON CYLINDER 4 AND IT DID HAVE A SIGNIFICANT LOSS I THEN TAPED A BAG TO THE EXHAUST PIPE AND AGAIN FILLED THE CYLINDER WITH AIR AND WATCHED AS THE BAG INFLATED WITH AIR.BEING THIS WAS A JASPER ENGINE STILL UNDER WARRANTY THE CUSTOMER... Trouble codes: P0300, P0304.
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2003 Chevrolet Silverado 1500 5.3L signal VIN: 2GCEK19T63
Thanks for all the help. It did end up being the flasher module. Picked one up from gm and all its well.
15
2003 Chevrolet Trailblazer North Face 4.2L Stall VIN: 1GNDT13S63
sorry for delay customer this week and said all ok.cleaned throttle body that the was promblem.thanks for help.
3
1993 GMC P3500 6.2L noise VIN: 1GDKP32JXP
Thanks to the info guys. Remove the heads & found that the valve where touching the head. Installed over size head gaskets & problem gone.
4
1998 GMC Savana 1500 5.7L Charging VIN: 1GDFG1SBSW
We notice the battery light was not going on with key turned to on position, this will excite the alternator causing it not to charge once bulb was replaced all was in working order. Thanks, Stewart
9
2006 GMC Sierra 2500 HD SL 8.1L Battery Drain VIN: 1GCHK29GX6
Sorry for the horrible delay in responding to everyones replys! Finally heard from the guy the other day! Been starting great since the fix! Special thanks to the 26 replys!! wow, you guys are great! There is a switch under the dash in which toggles a rela...
26
2001 Pontiac Aztek 3.4L battery light VIN: 3G7DA03E91
well the customer decided not to try a new alt, seeing how the car was still charging the customer decided to drive as is, i guess i will see it on the hook later. thanks for you help.
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