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Prev Professional Automotive Repair Technical Discussions for February 14, 2008
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Open Help Requests for GM
Help Request Answers
1989 Buick Electra Park Avenue 3.8L Surge, Cuts out, Misfire VIN: 1G4CW54C4K
Hello fellow techs! I am stumped on this car. Came in for surging on low speeds but fine on highway. first thing i noticed is they put there own plugs and wires on this car. i drove the vehicle and at really low speeds under a slight load that it sits there an...
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2001 Cadillac Eldorado ESC 4.6L Automatic Temp Control VIN: 1G6EL12Y11
This has great heat for a minute then the pass side goes full cold and the drivers side goes luke warm. If you set the temp back to 50F then back to 68 or so it will heat great again for a minute then back to full cold on pass and luke warm on drivers side. If...
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2004 Cadillac Escalade ESV 6.0L front end noise VIN: 3GYFK66N64
I have an 2004 Escalade in here that has growling noise from front driver side when under slight load type cruise conditions, happens at light steady speeds with throttle lightly applied. replaced front wheel hub bearings cause that's what it sounded like and ...
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1992 Chevrolet Corvette 5.7L Hesitation, Cuts out, Stall, Poor Fuel Economy VIN: 1G1YY33P6N
Hey IATN techs, this is my first time posting on here so lets see how this goes.I have a 92 vette p engine that was towed in.customer said it ran out of gas & started running rough & had low power after that happened. Found engine to be flooded, got fuel clear...
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1992 Chevrolet C1500 Cheyenne 7.4L shift solenoid VIN: 1GCDC14NZ1
Customer brought vehicle in stating that the vehicle will not shift from 2 gear. First thing we found a code 81 quad driver failure shift solenoid B. we pin tested all the solenoids from computer connector and found them to be good with 20.8 ohms. found no pow...
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1998 Chevrolet Express 1500 5.7L tcc lockup VIN: 1GBFG15R5W
One for you GM tranny guys. Got a 4L60E that came in with a violent tcc lockup engagement. A Trans Go shift kit was installed. The violent engagement was gone but now there is a violent shudder upon release. All you have to do is back off the throttle just a h...
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2000 Chevrolet K3500 5.7L ac controle head VIN: 1GBHK34R2Y
hello from texas i have this old body 2000 k3500 chevy it came in two weeks ago w/ ac inop we replaced the ac head and all was well everything went back to working trk is now back w/ same trouble and now we replaced the head w/another new head and nothing is ...
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2000 Chevrolet Blazer LS 4.3L 4wd inopertive VIN: 1GNDT13WXY
Hi fellow techs this one is just kicking us in the ass. I will give you a overview. 6 months ago we put a new switch and module in this thing do to its 4wd high light flashing. Truck ran fine for 6 months. Came in on monday for lighdt flashing & 4wd kicking in...
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2003 Chevrolet Silverado 1500 4.3L No Start VIN: 1GCEC14X83
This truck has no start,dtc P0335.I have 12v reference to crank and cam sensor when plugged in or not. Circuits between sensors(cam and crank) and pcm have continuity and no shorts to ground. Low reference circuits are good. Alldata says conditions to set code... Trouble codes: P0335 (Crank sensor circuit A)
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2006 Chevrolet Trailblazer LT 5.3L hvac VIN: 1GNET13M56
no airflow from the vents. it seems to be stuck on floor, but if you select mix with defrost also, it will switch on defrost. all blower speeds and temps work correctly. this trailblazer has the automatic climate control. did the GM reset procedure by pulling ...
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1994 GMC Sonoma SL 2.2L No Start VIN: 1GTCS1443R
truck was towed in, no start, noticed that the ses light is'nt on when key is on, we have good spark, and cranks over fine, no injector pulse or fuel pump, powered pump test terminal and pump works fine that way, cannot get any display readings from the scanne...
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1998 GMC Jimmy SL 4.3L Noisy Lifter
I have owned this Jimmy for 20k miles. Recently the lifters after it sits for not even all that long of a time will clatter really loud for the first 5 to 10 minutes. Are these known to have lifter issues? If so i have never experienced it. I think one is crac...
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1998 GMC Sonoma SL 4.3L clock VIN: 1GTDT14W2W
I have a question mainly. Does the body control computer control the clock in the radio or is the radio controlling the clock. I have a Sonoma that the clock stays on when you turn the truck off. Everything else goes off but the clock. Thanks
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1998 GMC Jimmy Envoy 4.3L Fuel Gauge VIN: 1GKDT13WXW
Hello Everyone, Have a fuel gauge on a 1998 GMC JImmy that shows empty with the low fuel light on while driving and will stay on full while just sitting still and idling, and while driving at times it will go from full to Empty and back the other way. And als...
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2003 GMC Envoy SLT 4.2L 4wd VIN: 1GKDT13S43
hello gm techs this envoy cam in this am and it has no 4wd // no codes at all it lights up on the selecter switch to auto then to 4hi to 4lo/// i can hear it working under the car but the front wheels never turn/// i put it on the hoist and it works fine thru ...
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2005 GMC Envoy SLE 4.2L transfer case VIN: 1GKDT13S55
Hi everyone i have this envoy that will work in auto 4X4 but if i put it in high or low the transfer case slips and does not apply power to front diff . if the truck is in the air all four tires rotate , if i drop the front down only the rears spin . the front...
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2000 Pontiac Bonneville SE 3.8L abs system VIN: 1G2HX54K5Y
Good morning, techs. I am having trouble finding the cause of intermittant loss of wheel speed signal from the r/f of this bonne. It is coding c1222-r/f speed is 0, c1226-r/f variation, and c1233-r/f open or short. The problem is intermittant. I have done ever...
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2003 Pontiac Vibe 1.8L Wheel Bearing Noise VIN: 5Y2SL62833
Hello I have this 03 Pontiac Vibe that has a roaring type noise while driving, it is most noticable around 60 mph's when you cut the steering wheel slightly to the right, thus putting more load on the left side. I have replaced both front wheel bearings, and w...
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2004 Pontiac Grand Am SE1 3.4L not sure VIN: 1G2NF52E64
Very random, but frequent clicking noise coming from behind the radio/HVAC controller. However this noise does not happen when the turn signal selector is engaged. The noise is the the same as when the selector is engaged only faster. It make no difference at ...
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2003 Saturn L300 3.0L security VIN: 1G8JW54R53
when doors are locked with the key fob the alarm goes off in exactly 20 min after arming. checked all door pins and trunk pins with tech2 scanner all apper to be ok. no blowen fuses or shorted wires. The scanner communicates with all mods. in car.
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Fixes & Summaries for GM
Fix/Summary Answers
1993 Buick Regal 3.8L draw VIN: 2G4WB51T3P
THANK EVERYONE FOR ALL THE HELP & I AM SORRY I WAS SO [...] GETTING BACK TO YOU ALL AS IT TOOK SEVERAL DAYS FOR THE BATTERIE TO DRAIN I COULD ONLY CHECK A FEW THINGS AT A TIME BUT I STARTED WITH A COUPLE OF MORE POPULAR REPLIES (RADIO ANTENA & ALTENATOR) LEFT T...
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1994 Buick LeSabre Custom 3.8L No Start, Misfire, MIL Lamp on VIN: 1G4HP52LXR
Thanks to all who gave thier replies I checked all the suggestions and was unable to repair issues with this vehicle, Finally I got it to start acting up after 2 weeks and 40 degree temperature change long enough to condemn the ECM. Replaced ECM and tested 2 d... Trouble codes: P00, P00.
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1997 Cadillac Seville SLS 4.6L squeeky belt after alternator replacement VIN: 1G6KS52Y3V
Thank you guys for great info. Ultimately, the pulley's on the AC/DELCO alternators are offset. I hadn't closed this post pending a reply from the AC/DELCO rebuilder's rep. He came by yesterday & dropped of my NEW unit & my 331 series unit that he took to the...
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1996 Chevrolet Cavalier 2.4L water pump VIN: 6T91MPAAAT
Hello all. What a overwelming response. I was not going to atempt this job but after recieving the valuabe information that you all supplied i decided.. why not. Im sure the engineer that designed this motor is sitting someware laughing (possibly a mental hosp...
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1998 Chevrolet Cavalier 2.2L Starting VIN: 3G1JC1241W
like to thank everyone with this cavalier did as steve said to removed the cluster and put it in the freezer for 6 hours and then put it back in the car bingo the car would not start replaced it with a used cluster thanks for all the great help
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1999 Chevrolet Express 3500 6.5L No Start VIN: 1GDJG31F2X
Thanks to all who replied to my request. Sorry I took so long to get back to you. The customer was away for a couple weeks and I didn't have acces to the van. It turned out that I had a faulty PMD. Since I replaced it, The van has started every time.
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2000 Chevrolet Impala 3.8L pass lock VIN: 2G1WF55K8Y
Well, we got her fixed. Thanks to all 14 of you who replied and Rick from Nebraska who called me to help out. We had to have the bcm reflashed, That got the car to start and run but we still had the security light. Next we replaced the pass lock connector @ th...
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2001 Chevrolet Tahoe 5.3L Underdash heating unit VIN: 1GNEK13T01
I am going to post a none fix at this time. What I do know is the blower motor is turning in the right direction. The cabin filters are not plugged. I have resealed the case between the cowl as per tsb for these vehicles. I installed the new cover where the ca...
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2002 Chevrolet Impala 3.8L Starting VIN: 2G1WF55K02
Well Thanks to all who responded got some very smart info. I took a chance by taking it to the dealer. They gave me the song and dance about needing a pcm and a bcm. I let them try the pcm first... Yes because it was cover under the 8-80 warranty. no problems ...
13
2005 Chevrolet Silverado 2500 HD 6.6L 4wd VIN: 1GCHK23295
I found Ground G110 had wicked moisture into the cable about 8 inches up from where the ground bolts to the frame (under drivers door area on frame), replaced bad section of the ground and everything is working well. Thanks for all of the replies.
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1999 GMC K2500 Sierra SLE 7.4L No Start, Cuts out, Stall VIN: 1GTGK29J8X
Have not had the chance to accurately diagnose this vehicle yet as it is my personal vehicle (we all know that it comes last, after the paying customers), and with the snow, rain, and slop on our roads, I can't drive around with a fuel pressure gauge taped to ...
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2001 GMC Jimmy SLE 4.3L MIL Lamp on, Hard Starting VIN: 1GKDT13W71
THANKS TO ALL THOSE TECH'S THAT HELPED HERE. I DID INFACT HAVE A LEAKDOWN PROBLEM. I PULLED THE UPPER PLENUM- REPLACED THE REGULATOR- PUT ON NEW GASKETS-- PERFORMED AN INJECTOR CLEAN SERVICE-- ALSO REPLACED THE SPARK PLUGS ( FOULED OUT ) -- DROVE THE TRUCK TO... Trouble codes: P0172 (System too rich Bank 1), P175, P0300 (Random Misfire).
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2002 GMC Yukon SLE 5.3L moan/groan noise VIN: 1GKEK13T82
I wish to thank all for the replys and suggestions. Seemed the overwhelming consenus was the steering box. Boss called the dealer and got a very cooperative service writer to confirm what Tim, David, Chris and Cenen said that the steering box was the problem. ...
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2002 Oldsmobile Bravada 4.2L transfercase VIN: 1GHDT13S02
AFTER RECEIVING SOME INFO FROM MEMBERS, I PREFORMED VARIOUS TESTS, AND WHAT I HAVE COME UP WITH IS A FAULTY ENCODER MOTOR. EVERYONE WHO RESPONDED WAS RIGHT ON THE MONEY. IM A 100% SURE OF THIS DIAGNOSIS. I WILL ALSO CHANGE TRANSFER CASE FLUID WITH RECOMMENDED ...
4
2000 Pontiac Grand Am GT 3.4L Stall VIN: 1G2NW12EXY
Replaced fuel pump. The customer has had the car for a week with no problems.I don't know what the speedo problem was it didn't happen when I drove the car. Thanks for all the replies.
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