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Prev Professional Automotive Repair Technical Discussions for September 13, 2007
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Open Help Requests for GM
Help Request Answers
2004 Buick Rendezvous CX 3.4L Differential VIN: 3E54S58950
Hey guys got a fun one. The AWD disengage light is on i have replaced the valve in the rear end,cleaned the conn, coming through the body,was alot of corrision,now i have the right volts to the act. on the rear. Test drove the car about a mile sure enough the ...
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1993 Cadillac DeVille 4.9L hood release cable VIN: 1G6CD53B0P
hi - hope this isn't too stupid, but...the hood release cable broke at the hood side. i can't see, much less get at, the release under the hood to pop it open. looks like i need to put a hole saw through the hood, but it's the boss' car and he 's not a big fan...
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1997 Cadillac Catera 3.0L tires VIN: WO6VR52R4V
I have a car that the rear tires are leaning in at the top pretty severely. The lh tire is leaning in so far it is rubbing the inner fender and I cannot see anything wrong with it. The rh tire is leaning in also but not nearly as bad. Can anyone point me in th...
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2001 Cadillac DeVille DTS 4.6L brakes and steering wheel VIN: 1G6KF579X1
customer stats she was driving @ 60 mph and the brakes on there own lock up and she couldn't turn the steering wheel to get off the road then after it slow down to a stop every time it reaCHED 10 MPH THEY WOULD LOCK UP AGAIN. she was not appling the brakes. i ...
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1981 Chevrolet Corvette 5.7L distribution valve VIN: 1G1AY8763B
cutomer brought car to us because he couldnt get a good peadal. found bleeder screws on left rear in wrong position .we put bleeders in proper position bleed system. wenow have adescent peadal but when pressure is applied valve switches shutting off fronthalf ...
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1989 Chevrolet Blazer Scottsdale 5.7L Excessive Emissions, Poor Idle Quality, Stall, MIL Lamp on VIN: 1GNEV18KF1
Hey Guys,I need help with this one...Truck came in on a hook and had been sitting for 6 months after being wrecked in the right rear corner but ran fine before parked.Charged dead battery and truck will start every time but only with 20-30% throttle.Drained fu... Trouble codes: 44 (fuel system lean)
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1991 Chevrolet K1500 Cheyenne 5.7L Mechanical VIN: 1GCDK14KXM
Installed a reman Evergreen Engine from Autozone that customer supplied. This was a short block only. Heads were pressure tested and surfaced. Checked out good. I have yet to get this engine running right. Seems to be a normal stock cam, nothing fancy. Engine...
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1994 Chevrolet S10 LS 4.3L looses power VIN: 1GCDT19W8R
truck looses power to the pount of stalling if you don't let of throttle. starts fine, runs and idles fine. fuel pump and filter have been replaced. (with propper pump). swapped out spider injection with known good one. map has been replaced. egr working propp...
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1995 Chevrolet C3500 Cheyenne 6.5L No Start VIN: 1GCHC39F1S
Scanned and found no actives codes, since the customer replaced the batteries after the engine stalled for the second time. Not too familiar with this engine. I know the Stardyne fuel pump are sensitive with the electronic comptroller and may cause the non r...
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1998 Chevrolet Express 2500 LS 5.7L Misfire VIN: 1GCGG25R3W
Ok here it goes. Vehicle will start cold ok, after about 15- 45 seconds starts to skip on #7cyl and an occasion #3 and #4 but very rarely. You can mash the throttle and it cleans out but if you hold it at high ilde (anything above idle) after about 30 sec. sta...
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2002 Chevrolet Silverado 2500 HD 6.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2GTEK19R1W
This is a fleet vehicle that is driven hard. Fleet wanted a spark plug replacement. Also had a MAF code, so we cleaned the very dirty sensor and told the driver to try it. Light came back on for the MAF. So we replaced the MAF and the EGR valve due to a code a...
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2002 Chevrolet Express 3500 5.7L overheated exhaust VIN: 1GBJG31RX2
hello guys. this van has been driven hard,but doesn't count for the problems. it ate 3 starters for starting hard.fuel pressure wouldn't hold. we replaced the regulator 3 times to get it to hold because it held when we pinched the return.we replaced the fuel p...
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2003 Chevrolet Silverado 1500 HD LS 6.0L Hvac VIN: 1GCGK13U93
Vehicle had originally came in for blown off belt and seized compressor. Installed new belt, compressor, orifice tube and receiver dryer. Complaint is that now the a/c will blow cold air intermittently. Vehicle will blow cold air and pressures are all ok, afte...
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2004 Chevrolet Impala 3.4L Air door actuator VIN: 2G1WF52E84
Hi Guys, I have a 2004 Chevy Impala that the heater controls will not function properly on. The car was hit in the right front and had the fender replaced. It came to us because the driver side blew cold air all of the time regardless of the temperature setti...
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2004 Chevrolet Silverado 3500 LS 6.6L gauges VIN: 1GBJC34184
The fuel gauge shows zero. There is 5 volts available at both senders. Ran a redundant ground to senders - no change. We have wiring schematics from Mitchell and Alldata. According to Alldata the PCM sends out 5 volts to the senders. The senders return the sig... Trouble codes: U1000 (no communication)
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2005 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Surge VIN: 1GCEK19B05
Have this truck that when it idles the idle kind of goes up and down or surges and when you are running down the road seems when you let off the gas pedal keeps wanting to go or accelerate a little then will eventually come down checked for intake leaks found ...
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1996 GMC Jimmy SL 4.3L Cuts out, Misfire VIN: 1GKCS13W7T
This truck will idle ok but as soon as you put it under any load, it starts cutting out. have already tried new crank sensor, shimming crank sensor but it still does the same . sometime it will set a crank sen. code sometimes it will not. any ideas would be ap...
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2006 GMC Savana 2500 4.8L Fuse 10 VIN: IGTGG25V56
Hello, This vehicle came in w/complaint "no blower" It actually had no blower or a/c control. Control head checked good. I have no power in at heater/ac fuses 9-10 under seat. I don't have a wiring diagram to show what feeds these fuses. There a quite a few...
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2000 Saturn LS2 3.0L No Start, Stall VIN: 1G8JW52R5Y
intermittant stall and no start...no codes since cleared but it has stalled since...i suspect crank sensor. Trouble codes: P0335
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Cadillac DeVille Concours 4.6L compressor relay VIN: 1G6KF5496X
thank tou all for the help, this fix on this car was the high pressure switch about $20.00 from the dealer special thanks to mark [...] he gave me a very detailed description of the power control feed to the relay, the high pressure cut off switch is located...
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1994 Chevrolet K3500 Cheyenne 6.5L No Start, Stall VIN: 1GCHK39FXR
As the overwhelming responses implied. An injector pump module fixed this one. We also ordered a heat sink which allows better cooling and relocates the module to a more serviceable area. IATN is the best!!
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1997 Chevrolet Tahoe 5.7L No Start VIN: 1GNEC13R3T
First thanks to all the members with their suggestions. I went ahead and pull the fuel tank out. Guess what the customer neglected to to tell me that he replace the fuel pump two weeks ago. Well I pulled the fuel pump out and lo and behold he damage the flex l...
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1998 Chevrolet Venture 3.4L Misfire, MIL Lamp on VIN: 1GNDX03E2W
FIRST I WANT O THANK ALL OF YOU THAT REPLIED. AS ALWAYS IATN HAS PROVED TO BEA VALUABLE TOOL. I CHECKED THE HARNESS FOR ANY SIGNS OF MISSROUTING OR DAMAGE NONE FOUND. AS PER REPLIES AND A LITTLE MORE THOUGHT I REPLACED THE INJECTOR. EVERYTHING IS OK NOW. I HAV... Trouble codes: P0202 (injector 2 ckt fault), P0302 (misfire cyl2), P0300 (multiple misfire).
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1992 Geo Storm 1.6L Hesitation VIN: J81RF2363N
Well guys,... The customer decided to "cut-bait" on this car and has decided to drive it as is. I recieved some replies on this thing and tried everything, all to no change in the symptom. I even tried a couple of tech lines and it has everyone scratching t...
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2000 Oldsmobile Silhouette GLS 3.4L Misfire, MIL Lamp on VIN: 1GHDX03E0Y
IT'S FIXED! THANK'S TO ALL THE HELP. I DID THE COMP TEST LIKE I TOLD EVERYBODY AND THE COMP ON #5 CYL WAS VERY LOW SO I TRYED DOING THE LEAK DOWN TEST! I PUT THAT CYL AT TOP DEAD CENTER AND SHOT SHOP AIR IN IT. THE AIR WAS LEAKING OUT THE EX PIPE! SO I HAD TO ... Trouble codes: P0305 (5 misfire).
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2001 Oldsmobile Alero GL 2.4L No Start VIN: 1G3NL12T11
A big thanks to those that help and offered suggestions. Come to find out, it was the ignition switch. This is a girls car and maybe I should have put 2 and 2 together. Most girls have the biography key chain with 30+ pounds of stuff about them. Im sure all th... Trouble codes: U1000 (No State of Health from Module).
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1999 Pontiac Grand Am GT 3.4L MIL Lamp on VIN: 1G2NW52E8X
removed power steering pump and pulled sensor found that wire insulation was gone right at the back of the sensor...once again you guys were dead on ...thanks for the help Trouble codes: P0341.
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2004 Saturn Vue Red Line 3.5L awd VIN: 5GZCZ63404
As per one reply suggested, I removed the shaft for the rear wheels, and parking lot manuver shuddering went away, verifying that the rear differential clutches were the cause of THAT shudder. This is replaced as a unit & not serviced (so I am told) Still ha...
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