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Prev Professional Automotive Repair Technical Discussions for October 10, 2012
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Limited 3.8L coolant flow through heater core VIN: 1G4HR54K1Y
Calling out for suggestion with an unusual case of trouble. This 2000 Buick LeSabre is a very nice, low mileage, well maintained car. It came to us with no heat from the heater. After considerable testing, working, parts changing the bottom line problem is p...
2002 Buick Rendezvous CX 3.4L Drive Shaft VIN: 3G5DB03E32
Hello all here at iATN. This is my first time ever writing and asking for help here on iatn. Customer brought this car in and complain there's a clunking noise when she back up the car and or shift from park to drive and from drive to reverse. I had the car up...
1968 Chevrolet Chevelle Malibu 5.3L Wiper Motor VIN: 11327W4568
Trying to hook up wiper motor on this car. Has a 3 prong switch. No factory conectors. I am sure I got the wires routed right but I cant get to work. Does anyone know how to replace motor? New motor comes with two wires not hooked up. I am having hard time on ...
1977 Chevrolet Camaro 5.7L Gear Selection
The TH350 tranmsssion can not be pulled using the car's shifter into 2nd or low. It can be moved into those gears by using a wrench under the car on the selector shaft from the transmission. Also, the transmission fails to go into park. You can hear the park p...
1997 Chevrolet K1500 Cheyenne 5.7L Misfire VIN: 2GCEK19R5V
Vehicle came back yesterday with multiple cyl. misfire code and had a feeling the (reman)injector unit went bad and used a bore scope to confirm the fuel pressure regulator was leaking bad.Replaced with a Delco unit and all was well except a cyl. 3 misfire on ... Trouble codes: P0300 (Multiple misfire)
1997 Chevrolet C1500 5.0L abs VIN: 1GCEC14V7V
Can the abs unit be bled with out using the tech 2, maybe jumping the abs pump motor.
2000 Chevrolet Suburban 1500 LT 5.3L rattle noise on rail VIN: 3GNFK16T5Y
Good afternoon group, this Suburban has a buzzing or rattle type noise coming from the fuel rail at the fuel pressure regulator on the return line only at idle. I remove the vacuum supply line to the fuel press. reg. and the noise goes away and while driving, ...
2003 Chevrolet Express 2500 6.0L Cuts out, Stall VIN: 1GCGG25U63
The customer has complained that the engine cuts out at idle upon stopping in traffic. It restarts immediately and can cut out before the traffic light turns green but not always. It can cut out this way several times in a trip. I finally got it to act up on m... Trouble codes: P0171 (System too lean bank 1), P0174 (System too lean bank 2)
2004 Chevrolet W3500 Tiltmaster W3S042 4.8L Engine VIN: J8BB4B1454
Tring to avoid exploratory surgery, this engine has a hard tapping noise intermittant, does not sound like lower engine knock, can start and let idle for 30 minutes with no noise but within 20 seconds of raising rpm noise begins and stays until returns to idle...
2008 Chevrolet Cobalt LS 2.2L Mechanical VIN: 1G1AK18F48
Just need to know if this engine is a free spinner. Timing jumped and no compression. Don't know if it's worth changing timing chain etc.
2008 Pontiac Wave 1.6L MIL Lamp on VIN: KL2TD55638
PLEASE,PLEASE,PLEASE HELP ME FIX THIS DAEWOO PIECE OF ---.every 3 or 4 days the check engine light comes on for p2096(post cat fuel trim system lean b1).smoked intake no vacumn leaks found (19-20 on vacumn gauge at idle)terra cleaned fuel system , fuel pressur... Trouble codes: P2096

Fixes & Summaries for GM
Fix/Summary Answers
2004 Cadillac CTS 3.6L no ecm comm VIN: 1G6DM57714
I finally was able to get back on the Cadillac and did some more voltage drop tests with an inline headlight tester. I discussed the circumstances and we decided on a rebuild GM reman ECM. That fixed it. I knew there was that possibility but resisted till the ...
2005 Chevrolet Impala 3.4L Surge, Misfire, MIL Lamp on VIN: 2G1WF52E85
Noticed while we did have 30K output on #4/1 coil it was a little inconsistent unless we dropped it down below 30K, while the other 2 coils were consistent even at 35K. Problem remained with those two cylinders even when we swapped both other coils in that pos... Trouble codes: P0300.
2006 Chevrolet Trailblazer LT 4.2L Poor Idle Quality, Stall, MIL Lamp on
Well I pulled the valve cover back off installed a dial inductor on number 1 cly to make sure its on tdc ckd my cams and both were on the flats ckd with a straight edge both lay flat I will r&r the cover again and ck for something inside the cam cover right no...
1997 GMC K2500 Sierra SL 5.7L Surge, Cuts out, Misfire, Poor Fuel Economy VIN: 1GTGK24R6V
Thanks everybody for the great replies. Wayne from North Carolina nailed it. We swapped the gear 180' & the correlation code went away. No more engine lights either but the engine had a bad vibration at around 2000-3000 RPM's. I still think the timing chain is... Trouble codes: P1345.
2000 Pontiac Grand Prix SE 3.8L No Start VIN: 1G2WJ52K4Y
well guys i have fixed this car!2 different snappy scanners would not read the bcm but it ended up being a defective pass key module thank you guys for your time and patients greg Trouble codes: P1629.
2006 Saturn Vue 3.5L abs VIN: 5GZCZ53466
The fix was the right rear abs sensor, caught it on road test watching data even though light was on and abs inactive. Snap on does not know the cause of this problem that when scanner connects the abs is shut off, they will call me when they get an answer. Th...
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