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Prev Professional Automotive Repair Technical Discussions for August 5, 2009
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Open Help Requests for GM
Help Request Answers
1994 Buick Park Avenue 3.8L Headlights VIN: 1G4CW5213R
Our Park Avenue Lamp Control Module/Twilight has gone out and is no longer avalaible from GM, haven't been able to find a rebuilder or a used one. Has anyone by-passed one or could us some insight on getting it repaired?
1995 Buick Park Avenue 3.8L Charging VIN: 1G4CW52KOS
Just the third time I have posted so here goes.Car was towed to shop. Car quit on customer while driving down the road. After customer got off the road the car would start and run for about 5 seconds and go dead. When the car arrived it would still only run fo...
1996 Buick Century Custom 3.1L valve train VIN: 1G4AG55M8T
here we go 1996 buick 3.1 came in for intake gasket leak customer wanted valve job while had down . we sent out the heads they needed miled and couple valve seats shop supplied .020 shim gaskets put all back together started and test drove more i drove the noi...
2004 Buick Rainier CXL 4.2L Compressor will Not Engage VIN: 5GADT13S84
Hello Group todays stumper is reporting a U1000 Code in the Rear Gate Module and The RAS (Rear Audio System NO Comm with the Heater A/c Just beeps the tech II and bounces back to the prevous Menu all the fuses and power & Grounds are Ok Checked the TSB about a...
1999 Cadillac DeVille Concours 4.6L Poor Idle Quality, MIL Lamp on, high idle VIN: 1G6KF5496X
loss of pcm memory code P0601, high idle and trans wont shift trans codes 0716 and 0717...testing shows resistance of input speed sesor @ 1580 ohms, with engine running will develope over .5 volts ac, checked @ PCM connector...previous codes before PCM replace... Trouble codes: P0601 (Loss of PCM memory)
2000 Cadillac DeVille 4.6L Stall VIN: 1G6KD54Y7Y
When vehicle first starts up at any time of the day. The idle is high for a little then settles to normal idle. If you let the engine warm up for more than 5 min ( in park no throttle) it will stall. Engine will start up right away and will have no problems ti... Trouble codes: P1599 (CC Power manigement mode or engine stall), P0410
2003 Cadillac DeVille 4.6L fuel gauge VIN: 1G6KD54Y23
have this car that the customer complains the fuel gauge in not correct. test drove car. coming to a stop the gauge goes up and stays for about a min. then slowly returns to normal. has anyone had anyproblems with a slow responding sender doing this. thanks j...
1985 Chevrolet P30 5.7L No Start VIN: 1GCHP32M7F
hello everybody ,this truck belongs to a friend of mine its an old bread delivery truck,bread co.had a jasper engine installed 10 plus years ago.problem started after engine installation,any way when truck sits a few days or so it wont crank ,no spark at all,c...
1994 Chevrolet Corvette 5.7L Accessories VIN: 1G1YY22POR
Replaced body module, need to program module for mileage and options. Have Tech1 but do not have a body cartridge. The only cart. On ebay some state 1988-1992 body cart. will this do a 1994 body control module, does anyone have this cartrigde-local dealers do ...
1996 Chevrolet K1500 5.7L Misfire VIN: 1GTEK19R4T
calling all gm experts. this one has the whole shop stumped. this vehicle has a constant misfire on cylinder #3 datastream indicates that this misfire is on #4. pcm will not fire injector. depinned pcm, and hooked up a noid light directly to pcm, will not sen... Trouble codes: P300
1999 Chevrolet Malibu 3.1L ABS Module VIN: 1G1ND52J2X
Customer complaint was that during a panic stop, the pedal sank to the floor and did not return. ABS light on.upon pumping the pedal, it would return, no problem. Retrieved ABS history codes c1222, c1225, c1226, c1233. All speed sensors seem to work properly. ...
1999 Chevrolet K1500 Suburban 5.7L MIL Lamp on VIN: 3GNFK16RXX
HELLO and thanks in advance; this chev is driving me nuts, it has an intermittent rough idle and miss most noticeable usually at start up, code 303 along with a inefficient cat for that side of engine & will set usually after 2-3 days. fuel pressure cks good v... Trouble codes: 303 (miss cyl 3), 420 (inefficeint cat)
1999 Chevrolet S10 LS 4.3L Cuts out, Stall VIN: 1GCCS19X6X
intermittantly this vehical will stall no warning. fuel trims are good pressure is good and stays up even when it stalls. almost like it has been shut off. all sensors test good and have not seen any glitches in paterns. when it stalls it will start right up. ...
2000 Chevrolet Suburban 1500 LT 5.3L code B0035 VIN: 3GNFK16T6Y
cleared dtc.the dtc comes right back.went throug mitchell test and found the test was inconclusive.thanks for any help you may have regurading this problem.
2001 Chevrolet Silverado 2500 HD 8.1L Engine VIN: 1GCHC29G81
hi, GM or Chevy Techs, I need your help and suggestions for this Silverado LS C2500 Vortec 8.1L engine. This vehicle is making a knocking or rattling sound when cold start, engine oil level is ok and it runs fine when warmed up. There's a TSB for the 6.0L engi...
2002 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52J42
This car came in on the hook customer drove to store came out with no start.I have fuel pressure but no inj. pulse or spark checked crank sensor on back of block replaced ignition module. I believe the antitheft only controls fuel.I have no codes either I'm th...
2002 Chevrolet Camaro Z28 5.7L Misfire VIN: 2G1FP32G02
Ok GM guys this is a good one! This car has 1900 miles on it. The customer replaced the fuel injectors thinking they were "gummed" There is a dead missfire on #4/#6 at idle till 2200 rpm. All rpms ABOVE 2200 the missfire on 4 and 6 is gone and #5 starts to m... Trouble codes: P0300
2002 Chevrolet Malibu 3.1L Unknown VIN: IGINE52J92
recurlation light goes off intermitedley. also comp. button flashes inter. gets real cold. no codes in body control module
2003 Chevrolet Express 3500 6.0L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCHG35U23
( NATURAL GAS VEHICLE ) Had a customer tow this vehicle from another shop. The other shop had a multiple misfire problem and had done a tuneup. They had replaced the spark plugs, wires, injectors, coils and fuel rail and they were unsuccessful and ran out of i... Trouble codes: P0300, P1020
2003 Chevrolet Tahoe LT 5.3L Electronic VIN: 1GNEC13Z23
IPC Indicates Service Brake Booster. ABS Pump Runs For about 30 Sec and Shuts off and displays Message. Mitchell Has Nothing on Diagnostic Procedure. Any Advice Apperciated. Could not find any bullitens on programming for this vin.
2003 Chevrolet Cavalier 2.2L Vent Solenoid VIN: 1G1JC12F43
Vehicle was brought in for an EngineLight. Scanned to find P0440. Commanded vent solenoid with TechII to close ... Didn't hear anything. Load tested power at the solenoid, it was good. Load tested ground, poor ground. Chased poor ground all the way to ECM. Re...
2004 Chevrolet Silverado 1500 LS 5.3L Seat Heater VIN: 2GCEK13T54
the driver's seat heater will turn on only for a couple seconds then turn off. I checked contunity on both heater elements they were less than 10 ohms. I checked contunity on the temp signal and that was 12k ohms. I haven't been able to find a spec for that ci...
2005 Chevrolet Suburban 1500 Z71 5.3L No power VIN: 3GNFK16Z25
The client complaint is this vehicle will have a no acceleration issue intermitantly. Press the throttle and nothing happens, or a bucking intermitant throttle responce. I have not been able to duplicate the issue while on test drives, or in the shop. To date ...
2006 Chevrolet Cobalt LS 2.2L MIL Lamp on VIN: F777103254
car came in with check engine light on ,ac not working,cleared code, ac went to working,had code p0128,coolant theremastat,i have very little inforemation on this.replaced coolant sensor all readings on scanner look ok ,thanks for any information. Trouble codes: P0128
2006 Chevrolet HHR LS 2.2L No Start, Stall VIN: 3GNDA23D79
Vehicle never dies while driving. After a short hot soak (intermittently) it will crank, start, studder and die. Verified loss of fuel pressure and no power to pump.
2008 Chevrolet Uplander 3.9L ABS Module VIN: 1GBDV13W48
We have two Uplanders in one of our fleets. They are modified for wheel chair lifts. The problem we are having is that the ABS light will come on along with the Taction control light. And message center will display "service traction control". We have not foun...
2004 GMC Savana 3500 6.0L ABS Activation VIN: 1GTHG39U24
At Times When Slowing, ABS System activates - low brake pedal, No lights on dash - No codes / Faults Found. Vehicle drives and brakes good.
2005 GMC Safari 4.3L MIL Lamp on VIN: 1GKEL19X55
van came in with po134 b1s1 o2.harness was rubbing through on frame, replaced with a bosch aftermarket . it then came back 2 days later with 1133 and 1134. we then replaced with another sensor as it turned out the 1st one was the wrong, 2weeks later it... Trouble codes: P0053
1972 Oldsmobile cutlass supr 350CID axle bearings VIN: 3J67K2M142
installed new bca A9 bearings and 2146 seals, has .020-.040" end play/ no bearing preload. I wish I was too young to remember this job but the fact is, I'm too old to remember it. old repair manuals just say "replace bearing" in this case. I have read that the...
2005 Pontiac Grand Am GT 3.4L Hesitation VIN: 1G2NW12E65
Customer states that on cold start the vehicle will not accelerate. Tach reaches 2,000rpm then drops to about 1,500rpm and feels like not shifting. Test driven several times and no problem occurs. No codes stored in ECM. No history codes or failure records. Do...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Rendezvous CX 3.4L im monitors VIN: 3G5DB03E92
sent to dealer for latest and greatest reflash updates... car is fixed...thanks to those who replied Trouble codes: U1300, U1016, U1014.
2000 Chevrolet Tahoe LT 5.3L srs VIN: 1GNEK13T6Y
thanks everyone for the tip. I finally found the tsb and that resolved the problem. The bigger issue was trying to get the update part. no one stocks and it was special order.
2001 Chevrolet Suburban 1500 LS 5.3L mode accuation VIN: 1GNEC16T91
Thank you William for reading my post completly, You nail one of the problems with control head. I did list in my posting that there was no freon problems, it had a code in the hvac contol head. (this problem is not related to freon problem, the vehicle has th...
1994 Geo Prizm 1.6L idle too high VIN: 1Y1SK5366R
With all the info received from all sources I 've determined that the IAC assy needs to be replaced. The customer was sent to locate a used part (new is $250), but he did not return. Not a whole lot I can do at this time but close my help request and wait. Tha...
1991 Oldsmobile Cutlass Calais 2.3L Misfire VIN: 1GCDMKLOHM
Sorry for the late post, i thought i hade closethis post before!!!. strange!!!. any way large number of responses pointing to the coil housing, i forgot to mention i hade allready replace that component (standard brand). but since everithing else was good i we...
2006 Pontiac G6 2.4L electrical issue VIN: 1G2ZF55B96
ok, it turned out to be the bcm on this one. thanks to all of the help that was givin.
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