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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 21, 2005
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2000 Cadillac DeVille 4.6L heated seats VIN: 1G6KE57Y54
i would like some help with heated seats on left and right heated seats,when i go to turn on heated seats on high med or low the heated seat module clicks on for a split second and then you hear the relay open again. i testd the elements with my ohm meter and ...
1964 Chevrolet Belair 454CID Exhaust Fit VIN: 139C424N10
Hi and building car for customer. 1964 Chev Belair/Impala and will be installing ZZ454 crate engine along w/Tremec 5spd standard trans (and aftermarket AC/4whl disc/9"/etc) and problem is Headers. Hooker has a part # listed but will hav to modify I think and a...
1991 Chevrolet Lumina 3.1L Hesitation, LOW POWER VIN: 2G1WN51T2M
the drivability problem came on as a sudden change in operation. the customer complaint was a lack of power on heavy accelleration. after the initial test drive to confirm lack of power we installed a fuel pressure gauge, the pressure remained constant at 42 p...
1994 Chevrolet Astro 4.3L No Start VIN: 1GCDM19Z6R
Vehicle came in on tow truck as a no-start. Verified no start. Verified fuel pressure. Verified spark. Both OK. Tested compression, with 165K miles, I thought the chain may be off. Compression OK. I advanced the distributor and it started. Not only did it sta...
1996 Chevrolet Blazer 4.3L Ride Control VIN: 1GNDT13W8T
Now only makes noise when turning hard left or right. (Noise is coming from both sides, worse on left side) We have looked for cracks in frame, found none; checked and tightened all bolts/hinges, etc. We have worked on this truck for over a week now PLEASE HEL...
1996 Chevrolet C3500 6.5L No Start VIN: 1GBHC34F4T
reman replacement unit will not start have fuel pressure of 6.0 psi at injection pump but no fuel at injectors have 5 volt square wave signals looking for help on diagnostics of pump driver module & engine shut off solenoid & fuel solenoid have 12 volts & grou...
1999 Chevrolet K3500 5.7L abs VIN: 1GCHK33R0X
This truck has a code of P0719 Brake Switch 2 Volt low. Cannot acess the abs module have no diagnostic trouble code tree for code p0719. If any one can help i could really use it i apreciate the help .
1999 Chevrolet Tahoe 5.7L pump shaft VIN: 1GNLEK13R6
Truck came in 11/24/04 @ 128384 miles for no power steering check & replaced pump,first replacement pump made howling noise so we got a second pump this one snaped the shaft in first 5 minutes,got 3rd pump flushed system and everythig fine untill December of 0...
2000 Chevrolet Blazer LS 4.3L blend door VIN: 1GNDT13W8Y
vehicle came in with overcharged system after evacuation and recharge found that the blend door constantly cycles from hot to cold i suspect that the pot on the door motor is open but can't get to the circuit to check with a meter without a bit of disassembly....
2000 Chevrolet Tracker 2.0L No Start VIN: 2CNBJ13C3Y
hello fellow techs, i am up to my chin in trackers. this one was towed in with a no start. we checked all the usuals, fuel, fire, timing and compression. all checked good. compression values were 130 psi on all cylinders. i believe this should be enough?! afte...
2000 Chevrolet Malibu 3.1L Poor Idle Quality VIN: 1G1ND52JXY
Hi every one,this car came in for a high idle and cel on. Put scanner on and found code P0341.I have changed cam sensor and cel went out but still the high idle.I asked the customer, told me this 2 issues has happened same day.You start the engine and RPM is 1... Trouble codes: P0341 (cam sensor)
1999 GMC K2500 Suburban 7.4L driveability VIN: 1GKGK26J1X
hi everyone: i have a problem with a customer's Suburban...he has had this problem intermittently for approximately one year. He regularly maintains his vehicle. The problem is as follows: the engine cranks, fires, and runs for 1-2 seconds before it shuts down...
1992 Oldsmobile Achieva S 2.3L Misfire VIN: 1G3NL14A4N
Car came in complaining of misfire. Pulled all plugs seen that number 2 cylinder was the culprit. Ran conventional wires From terminals to plugs. Removed the wires one at a time and found no spark leaving coil cover to number 2 cylinder. Since this engine only...
1996 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE12T8T
Hi all, hope you can help me a little, this car came in as a no-start, slow crank and no start. customer says it has been sputtering for about a year with black smoke and gas smell then died and would not start. We found the fuel pressure regulator was leaking...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Buick Regal Gran Sport 3.8L mileage odometer VIN: 2G4WD54L1M
As most of my friends at IATN said, the cluster was the problem, we replaced it with a reman unit, & had the miles reset by a buddy at the speedo service co. here in town. All is good now, thanks for your help, and I hope all of you have a very Merry Christmas...
1991 Buick Regal Gran Sport 3.8L Stall VIN: 2G4WD54L1M
i found nothing else wrong with the wires or ground or maf or the balancer so i replaced the crank sensor runs fine i will see if it work more tha 6 months Trouble codes: 17 (no crank sensor).
1995 Cadillac Seville STS 4.6L cruse control VIN: 1G6KY529XS
nothing has changed since i posted the update, as i stated there checked per the replies, and could not find a failure in the individual components, cust has not returned. THANKS TO EVERYONE THAT OFFERED THEIR HELP!
1990 Chevrolet Lumina 3.1L No Start, Stall VIN: 2G1W54T1L1
Bad ground to the ECU was the problem repaired the ground and everything is running good. I looked at all replies and they all were good and i had som on bad grounds so thank you
1997 Chevrolet Monte Carlo Z34 3.4L timing chain VIN: 261WX12X0V
This is not a fix,had a couple people telling me how to line up the timing belt. I ask if anyone had put on a lower chain or if that could be my problem. I did have one reply that said since I had alot of belt fiber in the belt area he would replaced the belt....
2000 Chevrolet Malibu 3.1L crankshaft VIN: 1G1ND52JXY
thanks for the help we did the main bearings and it's been 2 weeks with out the oil light going on we have some top noise but we've had alot of that noise on malibu's.
1997 Geo Tracker 1.6L readiness monitors VIN: 2CNBJ1364V
Well this vehicle never did run all its monitors even after the customer ran it for over a week . But the good news is it closed enough monitors to run insp. Thank you to Darren and Vincent for the EGR tips. I checked the EGR system and found the by-pass tube ... Trouble codes: P0135 (O2 heater circuit), P0400 (EGR flow).
1996 Oldsmobile Cutlass Ciera 3.1L No Start, Cuts out, Stall, VIN: 1G3AJ55M4T
Thanks for the reply and information. I'm sorry it took a while before I posted a fix on this. We let the car to be driven for a week in the shop. We did a wiggle test and bump test on the ecu and the car starts to dies out. Check harness and connector everyth...
1998 Oldsmobile Bravada 4.3L No Start VIN: 1GHDT13WOW
Ok Folks we got the handle on this gremlin. After talking to the customer we learned that an engine had been put in this back in August by the customer and his father. This info would have been helpful in the beginning. We found wires caught between the engine...
2000 Pontiac Grand Prix GT 3.8L hydraulic VIN: 1G2WP12K9Y
Thanks for all of the assistance guys. After checking vac. at booster, we decided to put a new set of pads on it. It helped but was not 100%. We replaced rotors with less expensive ones and it cured the problem. Seems to have been a friction problem. Thanks ag...
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